South America)

WORLD METEOROLOGICAL ORGANIZATION

REGIONAL ASSOCIATION III (SOUTH AMERICA)

ABRIDGED FINAL REPORT OF THE FOURTH SESSION

'Quito, 7 ·19 November 1966

PRICE: Sw. fl'. 14.-

I WMO - No. 207. RP. 74 I

Secretariat of the World Meteorological Organization - Geneva - Switzerland 1967 NOTE

The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of the World Meteorological Organization concerning the legal status of any country or territory or of its authorities, or concerning the delimitation of its frontiers. CONTENTS

List of persons attending the session VI Agenda ...•...... •...... •...... VIII General summary of the work of the session ...•...... •.....•...... • 1 Resolutions adopted by the session 32 Final Session No. No. 1 4/1 Working Group on Regional Requirements for Basic Meteorological Data (Processed and Unprocessed) from Ins ide and Outs ide the Region ...... •...... 32 2 6/1 Regional basic synoptic network .....•...... •...... 33 3 6/2 Principal land stations in Region III...... 34 4 7/1 Adoption of the regional part of Publication No. 9.TP.4, Volume C, Chapter II - Region III...... 34 5 7/2 Improvements in the regional collection of synoptic information ....•...... •...•...... •....•..•.....•...... •..... 34 6 7/3 Acknowledgement of receipt of territorial data by subregional broadcast centres ...... •...... •...... 35 7 7/4 Broad outline of a regional telecommunication plan for Region III for the WWW implementation period 1968 - 1971 ...... 35 8 7/5 Working Group on Meteorological Telecommunications •.•...... 36 9 8/1 Working Group on Hydrometeorology...... 37

10 9/1 Port meteorological liaison officers 11 9/2 Provision of weather forecasts to shipping and marine activities ..•...... •...... •.•....•....•..... 38 12 9/3 Working Group on Maritime Meteorology 39 13 10/1 Upper-air observations between 100 mb and 10 mb ...... 40

14 10/2 Meteorological observat~ons from aircraft 40 15 10/3 Familiarization flights ...... ••...... •.....•.....• 41 16 10/4 Exchange of aeronautical forecasters ...... •...... 41 17 11/1 Network of CLlMAT and CLIMAT TEMP stations in Region III...... 41 18 11/2 Aeronautical climatological information ..•...... •..... til 19 11/3 Rapporteur for the Preparation of a Climatic Atlas for South America...... •.•...... •.•.•..•.. 42 20 12/1 Plan for the development of professional meteorological training in South America •...... •.....•...... 43 IV CONTENTS

Final Session No. No. 21 13/1 Application for a Special Fund regional project for expansion of meteorological and hydrological networks in the Amazon basin .....•..•.....•.•...•.•....•••.•.••..•.•.. 44 22 14/1/1 Comparison of barometers •..•...... •...•.•..•...... •..•. 44 23 14/2/1 Working Group on Solar Radiation for Region III .....•..•..•.. 45 24 14/3/1 Regional codes for Region III ..•..•....••.••.....•...... 46 25 14/3/2 Working Group on Meteorological Codes ....•...•...•.•.....•... 46 26 14/4/1 Working Group on Agricultural Meteorology and Climatology for Region III •...... •.•..•..••...... •..•...•....•....•. 47 27 14/5/1 Ground radar weather observations ...... •..••....•....••••..• 48 28 16/2 Integration of meteorology into the economic development programmes ..•...... •....•....•...... ••. 49 29 16/1 Review of the resolutions and recommendations adopted before the fourth session of RA III including Executive Committee resolutions relating to RA III ...... 49 30 16/3 Participation at Fifth Congress ....•...... •....•...... •.•.. 50

Recommendations adopted by the session .•...•..•.•...•..•..•....•.••...•••...... •. 51 Final Session No. No. 1 3/1 Financial support to the president of Regional Association III .•....••....•...•..•...••....••..•..•.••...... 51 2 9/1 Collection of ships' weather reports in the area south of 600 s ...... 51

Annexes

I Annex to Resolution 2 (IV-RA III) Stations and observational programmes comprlslng the basic synoptic network in South America ..•..••..•••..•...•..••.•••••••...... •... 52

II Annex to Resolution 2 (IV-RA III) Plans for regional basic synoptic network in South America .••...... •.•.• 62 III Annex to Resolution 2 (IV-RA III) Procedures for minor changes in the regional basic synoptic network IV Annex to Resolution 4 (IV-RA III) Volume C, Chapter II, Region III - South America, Introduction 64 V Annex to Resolution 7 (IV-RA III) A broad outline of the regional telecommunication plan for Region III for the WWW implementation period 1968-1971 75 VI Annex to Resolution 17 (IV-RA III) Network of CLIMAT and CLIMAT TEMP reporting stations in Region III 84 VII Annex to Resolution 24 (IV-RA III) Amendments to Section III, Chapter II, Volume B of WMO Publica- tion No. 9.TP.4 •.•....•.•....•...•••.••.•..•.••.•.•...••••.•.•••.•••••.. 87 CONTENTS v

Annexes (continued) VIII Annex to Resolution 26 (IV-RA III) Recommendations approved at the international meeting on the problems of agriculture in the humid tropics of Latin America 91 IX Annex to Resolution 29 (IV-RA III) Resolutions adopted prior to the fourth session and maintained in force ...... 93 List of documents ••...••.•••••••••.•...•••••..•.••••.•••.••••••••••••..••••••.•••• 106 VI

LIST OF PERSONS ATTENDING THE SESSION

1. Officer of the session

A. Garcia S. president ad interim

2. Representatives of Regional Association III

C. P. Martinez principal delegate Argentina M. A. Rebolledo delegate

E. Beltr£n Gutierrez principal delegate Bolivia

J. Marden dos Santos principal delegate Brazil I. Santos de Bustamante delegate A. Beraldo delegate

N. S. Bravo Flores principal delegate Chile

F. Cancelado principal delegate Colombia W. Pannenbecker adviser

A. Garcia S. principal delegate Ecuador V. L. G6mez delegate E. Mancheno delegate G. Cisneros delegate C. Blandln delegate J. VEfsconez delegate F. Moya delegate G. Saltos delegate C. Molina delegate E. Dousdebes adviser M. Perez Delgado adviser

M. Perrusset principal delegate France P. Picq delegate

VI. Acosta Meza principal delegate Peru J. Lumbreras Cruz delegate J. Valdivia Ponce delegate J. Alarcbn Mendoza delegate

J. L. A. DIHamecourt principal delegate Surinam B. R. Douglas delegate H. A. Tjon A. Kiet delegate

C. Castro Pelttez principal delegate Uruguay O. B. ROdriguez Perez delegate LIST OF PERSONS ATTENDING THE SESSION VII

O. Coronel Parra principal delegate Venezuela A. VI. Goldbrunner delegate R. Convit delegate L. Ayala Useche delegate

3. Re12resentatives of Ivlembers of IVJvIO not belonging to the Association

L. de Azc~rraga observer Spain

R. Ivl. White observer United States of N. E. Johnson America

N. G. Leonov observer Union of Soviet Y. K. Alexandrov observer Socialist Republics

4. International organizations

O. F. Canziani observer International Civil Aviation Organization

C. J~uregui observer International Federa tion of Air Line Pilots Associations

R. S. Bush observer International Air Transport Association

A. Ivlart{nez observer Economic Commission for Latin America

J. Irias Rovelo observer World Health Organiza tion

5. WHO Secretariat

D. A. Davies Secretary-General (for part of the session) G. K. Weiss Chief, Telecommunication and Networks Section G. Kronebach Acting Chief, Research Section I. Font Tullot Chief, Latin America Section

6. Secretariat of the session

F. Garces Secretary E. Enr:i'guez Chief of Services R. de Aguirre Co-ordinator VIn

AGE N D A

Agenda item Relevant No. documents

1. Opening of the session 28 2. Organization of the session 28 2. 1 Consideration of the report on credentials 2.2 Adoption of the agenda 1, 2 2.3 Establishment of committees 2.4 Other organizational questions 3. Reports by the president of 10,15,16,17, 1 the Association and chairmen 20, 25, 28, Add. 1 of RA III working groups 4. Statement of requirements of 11, 33 1 Meteorological Services of RA III regarding basic meteorological information from inside and outside the Region 5. Regional aspects of the World 9, 12, 37 Weather Watch 6. Planning of basic synoptic net- 19, 30 2, 3 works of surface and upper-air observing stations taking into account supplementary observations 7. Telecommunications 12, 25, 31, 40 4, 5, 6, 7, 8 8. Hydrometeorology 15, 23, 36 9 9. Maritime meteorology 20, 21; 44 10, 11, 2 12 10. Aeronautical meteorology 13, 41 13, 14, 15, 16 11. Climatology 6, 7, 43 17, 18, 19 12. Meteorological training 3, 42 20 13. Technical co-operation 4, 45 21 14. Miscellaneous technical questions 14.1 Barometry 5, 26 22 14.2 Radiation 14, 35 23 AGENDA IX

Agenda item Relevant No. documents

14.3 Codes 8, 17, 39 24, 25 14.4 Agrometeorology 16, 22, 34 26 14.5 Ground radar weather observations 24, 27 27 15. Nomination of members of working 29, 32 groups and nomination of rapporteurs 16. Review of the resolutions and 18, 38 28, 29, recommendations adopted before 30 the fourth session of RA III in cluding Executive Committee reso lutions relating to RA III 17. Election of officers 32 18. Date and place of the fifth session 19. Closure of the session

GENERAL SUMMARY OF THE WORK OF THE SESSION

1. OPENING OF THE SESSION (Agenda item 1)

1.1 At the invitation of the Government of Ecuador, the fourth seSSlon of Regional Association III (South America) took place in Quito at the Ecuadorian Cultural Building. The session opened on 7 November 1966 at 11 a.m. The working sessions were held at the premises of the International Centre for Graduate Studies In Journalism in Latin America (CIESPAL).

1.2 Dr. Migue 1 Angel Pella, Minister of Agriculture, w"elc omed the participants In the name of the Government of Ecuador. Mr. D. A. Davies, Secretary General of 1lliO, thanked the Ecuadorian authorities in the name of the Organi zation for their kind invitation and assistance in organizing the session. Eng. Antonio Garcia, acting president of the Regional Association for South Americ~ and the Director of the Meteorological and Hydrological Service of Ecuador, con veyed to the host country the thanks of the participants and their pleasure in coming to Quito for the fourth session. The Association was greatly honoured hy the presence of Mr. L. de Azc~rraga, First Vice-President of the World Meteoro logical Organization.

2. ORGANIZATION OF THE SESSION (Agenda item 2)

2.1 Consideration of the report on credentials (Agenda item 2.1)

2.1.1 In accordance with the procedures outlined in Regulation 20 of the General Regulations, the Association did not set up a committee for the exam ination of credentials. The representative of the Secretary-General at this ses sion made oral reports during the plenary meetings on the credentials which had been submitted to him.

2.1.2 In the absence of objections, the credentials of the following Members and international organizations 'vere unanimously approved:

(a) Members of the Association

Argentina Bolivia Brazil Chile Colombia Ecuador France Peru Surinam Uruguay Venezuela 2 GENERAL SUMMARY

(b)

Spain United States of America Union of Soviet Socialist Republics

International Civil Aviation Organization International Federation of Air Line Pilots Associations Economic Commission for Latin America International Air Transport Association World Health Organization

2.1.3 The list of persons attending the session is given In the table appearing on page VI of this report.

2.2 Adoption of the agenda (Agenda item 2.2)

The provisional agenda for the session was unanimously adopted at . the first plenary meeting of the Association. The final agenda is given at the beginning of the present report.

2.3 Establishment of committees (Agenda item 2.3)

The Association established a nomination committee and three work-. ing committees. Working Committee A, under the chairmanship of Dr. Marden dos Santos, considered items 8, 10, 11, 12, 14.1, 14.2, 14.4 and 14.5. Working Committee B, under the chairmanship of Dr. V. L. G6mez, considered items 4, 5 6, 7, 9 and 14.3. Committee C was set up under the chairmanship of Mr. F. Cancelado to· study item 13.

2.4 Other organizational questions (Agenda item 2.4)

It was decided to authorize the president of the Association to approve the minutes which had not been approved during the session, due aceount being taken of any modif·ications which would be submitted by participant.s.

3. REPORTS BY THE PRESIDENT OF THE ASSOCIATION AND CHAIRMEN OF RA III WORKING GROUPS (Agenda item 3)

3.1 Report by the president of the Association

The Association noted with appreciation the report of Mr. F. L. Fern~ndez, former president of the Association, and expressed its satisfaction ,vith the achievements since the third session of the Association in 1963. The various technical ~uestions mentioned in the report were examined under the relevant items of the agenda.

3.2 Report by the chairman of the Working Group on Problems Relating to Meteorological Reporting by Ships and to Forecasting for Shipping Purposes

The Association noted with appreciation the report sUbmitted by the GENERAL SUMMARY 3 chairman of the working group. The report was considered in detail under item 9 of the Agenda. It was decided to continue the work of this group and in Resolu tion 12 (IV-RA III) a Working Group on Maritime Meteorology was established.

3.3 Report by the chairman of the Working Group on Hydrometeorological Questions

The Association noted with appreciation the report submitted by the chairman of the working group. The report was considered in detail under item 8 of the Agenda. The Association decided tore-establish this group. Resolution 9 (IV-RA III), which set up a ''forking Group on Hydrometeorology, was adopted.

3.4 Report by the chairman of the Working Group on Meteorological Telecommunications

The report submitted by the chairman of this group was noted with appreciation. It was considered in detail under item 7. The working group was re-established by Resolution 8 (IV-RA III).

3.5 Report by the chairman of the Working Group on Agricultural Meteorology

The Association noted with appreciation the report submitted by the chairman of this group. The report was considered in detail under item 14.4. The group ","as re-established as the ''forking Group on Agricultural Meteorology and Climatology by Resolution 26 (IV-RA III).

3.6 Report by the chairman of the Working Group for the Preparation of a Climatic Atlas for South America

The report submitted by the chairman of the group was noted with appreciation. It was considered in detail under item 11. To continue the work of preparing a regional climatic atlas the Association adopted Resolution 19 (IV-RA III) which invited an expert to serve as a Rapporteur for the Prepara tion of a Climatic Atlas for South America.

3.7 Report of the chairman of the Working Group on Codes

The Association noted with appreciation the report submitted by the chairman of this group. It was considered in detail under item 14.3. The working group ","as re-established by Resolution 25 (IV-RA III).

3.8 Financial support to the president of Regional Association III

3.8.1 The Association felt that financial assistance should be granted to the president of Regional Association III in order to permit the effective exe cution of his duties. Therefore, it recommended that appropriate budgetary pro visions for the fifth financial period be made. It was suggested to allocate U.S. $ 10,000 per annum for secretarial assistance, communication, printing, office supplies, as well as travel and ~er diem for visiting countries in Region III. The Association felt that the above-mentioned financial support will be much less than the expenses involved in appointing a regional representative and it therefore suggested that Congress give favourable consideration to the request. Recommendation 1 (IV-RA III) was adopted. 4 GENERAL SUMMARY

3.8.2 Some Members were of the opinion that the establishment of a regional representative for Latin America was not necessary as far as Region III was con cerned. However, the Association felt that this matter needed further consulta tion w"i th governments of Region III and also that the opinion of other Latin American countries outside Region III should be obtained.

4. STATEMENT OF REQUIREMENTS OF METEOROLOGICAL SERVICES OF RA III REGARDING BASIC METEOROLOGICAL INFORMATION FROM INSIDE AND OUTSIDE THE REGION (Agenda item 4)

4.1 Under this item the Association examined the requirements of Members of RA III in respect to observational and processed meteorological information from

(a) Territories within Region III; and from

(b) Other WMO Regions.

It was noted that the observational data requirements by Members of RA III from within the Region would in general be met if the recommended synop tic networks of RA III were fully implemented and the data were distributed in accordance with the recommended regional telecommunication arrangements (see Agenda item2 6 and 7).There were, however, a number of important deficiencies which were highlighted during the discussion of this item, mainly:

(a) Lack of observational data from the South Atlantic, the South Pacific, and the interior of the South American continent;

(b) Difficulties in the receipt of southern hemisphere observa tional data originating in Regions I and V.

A statement to this effect was recorded under Agenda item 7.

4.2 The Association recognized that there is an urgent requirement for regular receipt of nephanalysis data covering the sea areas of the South Atlantic, South Pacific and the northern part of Region III. The Association felt that urgent arrangements should be made for appropriate nephanalysis data obtained by the U.S.A. and U.S.S.R. to be transmitted into Region III through the 1VMC Ivashington.

4.3 The Association agreed that for synoptic purposes there is a need for the regional collection and appropriate dissemination of AIREPS available at the AIREP collecting centres in the Region. It was particularly stressed that the subregional centres should receive and distribute all AIREP reports avail able. The form used for the exchange of aircraft observations should be the same as that for reporting by aircraft, namely, the AIREP form. Meteorological recon naissance flights might report in any code agreed nationally and published ln IVMO Publication No.9. TP. 4, Volume B, under "National practices II.

4.4 The Association felt that further studies of data requirements of Members of RA III for operational and research purposes should be undertaken. These studies should be made along the following lines:

(a) Contents, density of observing networks, frequency and range of exchanges of meteorological reports for different purposes and scales of motion; GENERAL SUMMARY 5

(b) Availability of special types of observation and of new types of observation under development (radar, satellite, laser);

(c) Availability of processed data of different types from within or outside the Region (basic analyses and forecasts, nephan alyses, forecasts and warnings for special purposes).

4.5 The Association agreed that studies as outlined above should be undertaken but felt that the formulation of the requirements on this subject is a task which can hardly be carried out in the course of a session, unless it has been thoroughly prepared during the preceding inter-session period. For this reason the Association decided to establish a Working Group on Regional Requirements for Basic Meteorological Data (Processed and Unprocessed) from Inside and Outside the Region. Resolution 1 (IV-RA III) was adopted.

5. REGIONAL ASPECTS OF THE WORLD 1VEATHER WATCH (Agenda item 5)

5.1 Under this item the Association discussed a document presented by the Secretary-General on the regional aspects of the World Weather Watch, with particular reference to the locations and functions of world and regional meteo rological centres. In addition to the above document the main features of the World Weather Watch were explained.

5.2 The Association noted that the essential elements of the World Weather Watch are:

(a) The observational networks and other observational facilities, called the global observing system;

(b) The meteorological centres and arrangements for processing of the observations and storage and retrieval of data, called the global data-processing system;

(c) The telecommunication facilities and arrangements necessary for the rapid exchange of the observations themselves and of the processed data, called the global telecommunication system;

(d) The research programme;

(e) Education and training.

5.3 The Association confirmed that to meet the objective of the World Weather Watch in the Region, it will be necessary to implement an adequate ob serving system and to provide an appropriate telecommunication system for the collection and distribution of observational and processed data.

5.4 The Association noted that the global data-processing system will require three different classes of meteorological centre, namely, world, region al, and national meteorological centres. 6 GENERAL SUMMARY

5.5 World meteorological centres "

The Association studied the plan for meteorological centres (YMCs) for the period 1968-1971 and welcomed the establishment of three world meteo rological centres at Melbourne, Moscow" and lvashington. The Association fully supported the views expressed by the Executive Committee as regards the role and functions of world meteorological centres.

5.6 Regional meteorological centres

5.6.1 The Association studied the guidelines of the Executive Committee concerning the role and functions of regional meteorological centres 10 the framework of the World Weather W~tchcorrcept. The Association felt that there was a need for the establishment of regional meteorological centres in Region III.

The Association next received the list of functions established by the Executive Committee and accepted them as planning principles for Region III. Therefore, it agreed that the following acti vi ties might be performed by Rk Iff --_. regional meteorological centres:

(a) Issue of analyses and prognoses of surface arid upper-air con di tions for use by associated meteorological centres a"S re quired;

(b) Processing and archiving of basic meteorological information, as agreed;

(a ) Archiving of regional charts and processed data for distri bution to the inter'national scientific community for research purposes;

(e) Provision of training opportunities;

(f) SUJPort of research in atmospheric sciences.

The Association noted that the detailed list of output products of RMCs is still under study.

5.6.2 lfuen discussing the location of regional meteorological centres in Region III, the Association noted the follo1ving selection criteria for the de signation of RMCs 1vhich have been adopted by the seventeenth session of the Executive Committee. Among these are the follmving: '

(a) Willingness to carry out the functions listed above;

(b) Scientific, technical and financial capability of implement ing the above activities at the beginning of the fifth finan cial period (1968-1971);

(d) Contribution of each additional RMC to the purposes of the lV1V1v. GENERAL SUMMARY 7

5.6.3 Keeping in mind the above criteria for the selection of regional meteorological centres, the Association accepted with gratitude the offer of Argentina, Brazil and Venezuela to establish and operate regional meteorolo gical centres at Buenos Aires, Brasilia, and Maracay, respectively. Finally the session proposed that Congress consider the inclusion of Brasilia, Buenos Aires and Maracay as regional meteorological centres in the WWW Plan.

5.7 National meteorological centres

Considering the W1VW concept, the Association stressed that the im portance of national meteorological centres might increase, mainly because of the availability of a larger amount of observational and processed data; in particular,objective analyses and forecasts 1vould result in a better service to all users.

5.8 Regional aspects concerning the m~v data requirements and observational and telecommunications systems were discussed under items 4, 6 and 7, respectively.

6. PLANNING OF BASIC SYNOPTIC NETWORKS OF SURFACE AND UPPER-AIR OBSERVING STATIONS TAKING INTO ACCOUNT SUPPLEMENTARY OBSERVATIONS (Agenda item 6)

6.1 Review of the basic synoptic network of surface and upper-air ob serving stations

6.1.1 The Association examined its previous decisions on the subject and those of the Congress and the Executive Committee.

6.1.2 In its revie1v of the basic net1vork laid d01Vll in Resolution 2 (II-RA III) as amended by the inter-session Resolution 5 (64-RA III), the session gave careful attention to the data requirements of the World Weather Watch. In particular it took into account:

(a) The definition of basic synoptic network adopted by the Executive Committee upon the recommendation of the Commission for Synoptic Meteorology;

(b) The world-1vide net1vorks development plan adopted by Resolu tion 22 (Cg-IV);

(d) The priority implementation programme for the fifth financial period set forth in the Plan for the World Weather Watch sub mitted by the Executive Committee for approval by the Fifth Congress;

(e) The data needs of Members of Regional Association III.

6.1.3 In establishing the new target basic network for the Region the following principles were adopted: 8 GENERAL SUMMARY

(a) All surface stations in the network should make and dissemi nate surface synoptic observations at the four main synoptic hours, viz. 0000, 0600, 1200 and 1800 GMT, and at the four intermediate synoptic hours, viz. 0300, 0900, 1500'and 2100 GMT. The carrying out of the observations at the main synop tic hours should be given first priority;

(b) All radiowind stations should make and disseminate upper wind measurements up to 10 mb at 0000, 0600, 1200 and 1800 GMT. The carrying out of the 0000 and 1200 radiowind obser vations should be given first priority;

(c) All radiosonde stations should make and disseminate observa~ tions of pressure, temperature and humidity up to 10 mb at 0000 and 1200 GMT.

6.1.4 The Association agreed that if only one radiosonde or radiowind ascent is made, 1200 GMT should be the preferred standard hour of observation.

6.1.5 The network thus established is given in Annex 1 to Resolution 2 (IV-RA III). The network recommended by the Regional Association satisfies, in general, the data needs of world, regional, and national meteorological centres, one exception being that national meteorological centres may need more informa tion from their own countries. Stations established for ~urely national purposes were not included in the recommended basic synoptic 'networks. Resolution 2 (IV-RA III) was adopted.

6.1.6 The Association stressed the importance that synoptic observations be made at standard observation times laid dow'n in the WMC Technical Regulations, particularly as regards the 0000 GMT surface observations.

6.1.7 The Association stressed the need for adequate. telecommunication links between observing stations and the national meteorological centre (or territorial centre), to ensure timely and rapid collection of synoptic r~P9r~s for all observing hours.

6.1.8 Turning now to the practical aspects of implementation of the casic regional syno~tic network, the Association urged Members concerned to spare no effort to implement the network recommended in Resolution 2 (IV-RA III). For the WlofI'I implementation period 1968-1971, the Ex.ecutive Committee stressed that a minimum average network spacing of 1,000 km for upper-air stations over conti nental Fegions and ocean regions having suitably distributed islands should be achieved. The plan for the World Weather Watch submitted by the Executive Com mittee to Fifth Congress contains recommendations to implement a number of new stations and to augment the observing programme for a number of existing stations. A study made by the Secretary-General showed that the upper-air net work of Region III implemented at present did not fully satisfy the objective set by the Executive Committee for the minimum network. To bring the upper-air network to the desired level it seemed necessary to implement ,.ith highest pri ority the following stations:

80462 Santa Elena de Uairen 80464 San Carlos de Rio Negro 82193 Belem/Aeroporto Val de Cas 82288 Parnal'ba 82332 Manaus/Aeroporto Ponta Pelada GENERAL SUMMARY 9

82400 Fernando de Noronha 82765 Carolina 82930 Cachimbo (Aeroporto) 83229 Salvador 84008 San Crist6bal (Galapagos) 84129 Guayaquil/Sim6n Bollvar 84377 Iquitos 85469 Isla de Pascua/Mataveri 85585 Juan Fern£t,ndez 85934 Chabunco/Punta Arenas 88903 Grytviken

An increase of the full observing programme (radiosonde and radio wind measurements at 0000 and 1200 GMT at the following stations is also urgent ly required:

81405 Cayenne/Rochambeau 82598 Natal 83208 Vilhena (Aeroporto) 83378 Brasilia (Aeroporto) 83612 Campo Grande (Aeroporto) 83650 Trinidad (Jeha) 83746 Rio de Janeiro/Aeroporto Galeao 8~840 Curitiba/Aeroporto Afonso Pena 83971 Porto Aleare/Aeroporto Salgado Filho 84628 Lima Callao (Aeroporto Int~rnacional Jorge Ch&vez) 85203 Ovejuyo 88890 Stanley

6.1.9 The session was cognizant of the ~ifficulties of setting up surface observing stations and the implementation of the full observing pro gramme. It felt that in some instances automatic weather stations might be used. The Association urged its Members to explore this possibility for imple menting the regional network.

6.1.10 The Association agreed that the manned surface synoptic stations included in the basic synoptic netwoTk should meet the specifications of the principal land stations as set forth in the 111i0 Technical Regulation 3.1.1.1. The purpose of this decision was to ensure that reports internationally ex changed were of the highest possible quality. Resolution 3 (IV-RA III) was adopted.

6.1.11 The Association requested the Executive Committee and Congress to note that even if Region III target networks were fully implemented a great portion of the ocean area of the Region would still have inadequate or no ob servations. The Association noted that observational deficiencies could be overcome by observations from mobile and fixed ships, aircraft, satellites, and fixed and floating automatic weather stations (buoys). It noted that the Secretary-General is developing plans to improve the global observing system in the framework of the World Weather Watch.

6.1.12 The Session was informed that some Members have already installed APT receiving stations or are planning to do so in the near future. 10 GENERAL SUMMARY

6.2 Planning of global observing system

6.2.1 The Association was cognizant that the present global observation system is deficient over most ocean areas, in the tropics and in remote land areas. In its guidance to planning the global observing system, the Executive Committee stressed that various observing techniques will have to be used to ensure more homogeneous distribution of observations on a global basis. As re gards the land stations, for several years regional associations have been ac tive in planning synoptic surface and upper-air networks in their respective Regions. However, in order to arrive at an adequate, economically feasible global observing system, it was found that an overall systems planning, taking into account all proven observing techniques, was indispensable if a marked im provement in observing the atmosphere is to be achieved.

6.2.2 To this end, the Executive Committee included in its plan for the World Weather Watch the following techniques which will be the main contributors to the global observing system In the period 1968-1971.

(a) For surface observations

Manned land stations Fixed ocean stations Mobile ship stations

Manned land stations (radiosonde/radiowind) Fixed ocean stations (radiosonde/radiowind) Mobile ship stations (radiosonde/radiowind) Aircraft observations

Television and infra-red observations

6.2.3

In addition to the above, studies are being carried out on new techniques which might become operational in due course. Automatic weather stations and buoys, constant-level balloons, satellites and meteorological rockets show great potential.

6.3 Surface and upper-air observations from mobile ships

This matter was discussed under agenda item 9.

6.4 Aircraft observations

The Association ~as informed of the extensive potential of air craft reports to supplement upper-air data obtained from radiosonde and radio wind observations. The arrangements for the making and exchange of AI REPS were discussed under agenda items 10 and 7 respectively. GENERAL SUMMARY 11

6.5 Additional upper-alr observations

6.5.1 The observer of ICAO stated that the recommended synoptic network as set forth in Resolution 2 (IV-RA III) does not meet completely the data re quirements for civil aviation. He stated that pilot balloon observations were required at the following locations and with the observing times indicated:

Country/station Pilot-balloon

Colombia 00 06 12 18 80259 Cal i/ Cal i pue.rto x x x x

361 Mitu x x x x

Venezuela 80415 Caracas/Maiquet{a x x x x 419 Barcelona x x x x 444 Ciudad Bolivar x x x x 450 San Fernando de Apure x x x x 457 Puerto Ayacucho x x x x

Surinam

81225 7,anderi j x x x x

Brazil 82030 Amap~ (Aeroporto) x x x x 244 Santarem x x x x 993 Macei6 x x x x 83063 Porto Nacional/Aeroporto x x x x 497 Caravelas/Aeroporto x x x x 649 Vit6ria/Aeroporto Goiabeiras x x x x 780 Sao Paulo/Aeroporto Congonhas x x x x 827 Foz do Igua~& (Aeroport0 x x x x 899 Florianopolis x x x x

Ecuador

84045 Quito/Mariscal Sucre x x x x

Peru 84452 Chiclayo x x x x 515 Pucallpa x x x x 658 Puerto Maldonado x x x x 691 Pisco x x x x 752 Arequipa x x x x

Bolivia 85223 Cochabamba x x x x 365 Yacuiba x x x x 12 GENERAL SUMMARY

Country/station Pilot-balloon

Chile 00 06 12 18 85406 Arica/Chacalutta x x x x 486 Vallenar x x x x 672 Chillan x x x x 874 Balmaceda x x x x

Paraguay 86218 Asunci6n/ Aeropuerto Interna'cional "Presidente Stroessner" x x x x

Uruguay 86350 Rivera x x x x 500 Treinta y Tres x x x x 580 Montevideo/Carrasco x x x x

6.5.2 The Association agreed that Members should maintain the above- mentioned upper-air observations until it is possible to show that the net work recommended in Resolution 2 (IV-RA III) fully satisfies the flight oper ations requirements along the international air routes. It was also hoped that Members would maintain the pilot-balloon observations which are required to support flight operations performed within their territories.

6.5.3 These pilot-balloon observations might also be useful for general forecasting purposes.

7. TELECOMMUNICATIONS (Agenda item 7)

7.1 Review of existing telecommunications arrangements

7.1.1 The Association reviewed the decisions of RA IlIon meteorological telecommunications which were adopted prior to the fourth session. It decided that all decisions on telecommunications of a permanent nature should be in cluded in the Regional Introduction to Volume C of WMO Publication No. 9.TP.4. Finally the Association adopted a revised Introduction to Chapter II - RA III. Resolution 4 (IV-RA III) was adopted.

7.1.2 The kssociation noted the serious difficulties in the collection of synoptic information. for 0000 and 0600 GMT owing to the non-operation of tele communications. The Association stressed the need that urgent steps should be taken to overcome these serious deficiencies. Resolution 5 (IV-RA III) was adopted.

7.1.3 The Association discussed the difficulties in the collection of meteorological information at the designated subregional centres. It noted that some countries do not operate territorial broadcasts and have no direct tele communication links with the designated subregional broadcast centres. In many GENERAL SUMMARY 13 cases AFTN circuits are used for the collection of the data in the subregional centres. However, in many instances difficulties in the routing of these mes sages over Al<'TN have been experienced; therefore, the Association urged Members to implement as soon as possible territorial transmissions to ensure the prompt and reliable reception of the data at the subregional centres. The appropriate decisions were included in the annex to Resolution 4 (IV-RA III). The Associa tion requested its president, in consultation with the Secretary-General, to inform the Members of the need to ensure reliable and prompt reception of terri torial data at subregional centres and advise Members on the most appropriate telecommunications means to meet this requirement.

7.1.4 In accordance with the provisions of the "Broad Outline of the Regional Plan of Telecommunications for Regional Association III for the period 1968-1971 of the VlWW"~ Buenos Aires and Brasilia are to become RTHs and they must consequently be linked with the VlMC at Washington. Brazil has planned to begin the installation of the telecommunications equipment necessary for the operation of the RTH at Brasilia; Argentina has facilities for the establish ment of a direct circuit with Washington for the reception of information within the southern hemisphere in general and the Antarctic in particular. As the im mediate need exists to establish that link, the Association decided that these problems should be studied by the two countries in consultation with the United States with a view to arriving at a solution before the Fifth Congress.

7.1.5 The Association discussed at great length the implementation of the regional telecommunication plan as set forth in lbhe annex to Resolution 4 (IV-RA III). The Association was informed by several Members that it might be difficult to meet the deadline for the establishment of the necessary facilities in their respective countries. In order to ensure full implementation of the regional telecommunications plan, particularly as regards the collection of synoptic data at territorial and subregional centres, the Association felt that some financial support might be needed. In order to permit the conversion of Al (Morse) subregional broadcasts into RTT at an early date, the Association felt that in some cases financial support for the installation of facsimile and RTT receiving equipment .would be needed.

7.1.6 The Association noted that there is still a need in Region III to use AFTN circuits for distribution of basic meteorological data. In order to allow the AFTN and the RA III meteorological telecommunication system to fulfil functions for which they were designed, the Association felt that Members should implement urgently the plan set forth in the Annex to Resolution 4 (IV-RA ;111) and discontinue the use of AFTN for distribution of basic meteorological data as soon as their data needs were met by the RA III meteorological telecommuni cations system. Furthermore the Association felt that AFTN circuits could never meet the WWW requirements.

7.1.7 During the discussion of the operation of the meteorological telecommunication system in South America, it was mentioned that territorial broad casts still play an important role and that it would be highly desirable to in form transmitting stations of the receipt of the territorial data at the sub regional broadcast centre. The Association agreed that the best procedure to keep each Member informed of the quality in which its territorial broadcast was received would consist of a short service message by the subregional centre im mediately following the reception of the territorial broadcast, reporting on the difficulties experienced and requesting, when necessary, its repetition. Upon receipt of the request for repetition, the territorial broadcast centre should immediately repeat its broadcast or send an addressed message to the respective subregional broadcast centre. Resolution 6 (IV-RA III) was adopted. 14 GENERAL SUMMARY

7.1.8 The Association was informed of difficulties in obtaining suitable HF radio frequencies for meteorological transmissions. In this connexion, the Association noted a statement of the representative of the International Fre quency Registration Board (IFRB) of the International Telecommunication Union (ITU) to the informal planning meeting on the WWW global telecommunication sys tem (Geneva, October/November 1966). The representative of the IFRB stated that the assignment of radio frequencies is a national matter and has to be dealt with by the national telecommunications authority. However, he offered the ser vices of the IFRB to assist Meteorological Services in their efforts to secure appropriate frequencies provided that complete technical and operational inform ation is sent to the IFRB through the national telecommunications authority. The information needed by the IFRB includes, in particular, configuration of the net work (location of receiving and transmitting stations), volume of traffic, trans mitting schedules, distinct characteristics of the equipment to be installed, and mode of emission. The Association felt that Members experiencing difficulties in the assignment of radio frequencies should make use of the offer expressed by the representative of the IFRB at the above-mentioned planning meeting.

7.1.9 The Association noted Recommendation 46 (CSM-IV) which requests the Secretary-General to issue weekly advanced notifications of changes to Volumes A and C of 1fMO Publication No. 9.TP.4. These notifications were to be distributed over meteorological telecommunications channels. The Association agreed that these messages should be included in the subregional broadcasts of Buenos AirBs~ Brasilia and Maracay if the content of the messages is of direct concern to South American countries.

7.1.10 The Association was informed that an APT receiving station had been set up in Argentina. It was mentioned that the cloud data collected by this station could be exchanged internationally. The delegation of France informed the session that an APT station at Cayenne will be put into operation during 1967. The principal delegate of Chile informed the session that his Government approved the establishment of an APT station in Chile,to be operational in 1970.

7.2 Transmissions of data to other Regions

The Association was informed that RA III surface and upper-air data for 0000 and 1200 GMT were urgently needed at the 1fMCs at Melbourne, Washington and Moscow. The Association invited Argentina and Brazil to prepare lists of surface and upper-air stations in the southern hemisphere from which reports for 0000 and 1200 GMT were at present available at their respective centres for inter-regional exchanges. At the same time, both Members were invited to indi cate at what hour these data would be available for onward transmission.

7.3 World Weather Watch telecommunication plan for Region III

7.3.1 The Association noted the organizational and engineering principles of the global telecommunication system which were established by the Executive Committee. Furthermore it noted the request of the Executive Committee that Regional Associations should develop their regional communications plans on the basis of these principles at an early date.

7.3.2 The Association noted that the global telecommunication system should be organized on a three-level basis, namely: GENERAL SUMMARY 15

(a) A main trunk circuit to connect the world meteorological cen tres and appropriate regional telecommunication hubs, regional meteorological centres and national meteorological centres. All the regional hubs and centres should have equal access to the main trunk circuit;

(b) The regional telecommunication networks; and

7.3.3

7.3.3.1 When developing the plan of the WWW telecommunication system, the Association kept in mind:

(a) The rapidly gro,ving need of Members of RA III for prompt and reliable reception of a large amount of observational and pro cessed information from inside and outside the Region;

(b) The necessity for the development of a plan for a regional telecommunication system which can satisfy WWW data require ments;

7.3.3.2 The Association supported the EC-XVIII suggestion that regional telecommunication networks should be capable of:

(a) Exchange and distribution of observational data within the Region, as required, to meet the needs of Members of the Region;

(b) Collection of observational data originating in, or being re ceived by, radio stations in the Region (e.g. reports from air craft and ships);

(c) Exchange and distribution of ~rocessed (conventional and sat ellite) information as required to meet the needs of the Members of the Region;

(d) Interchange of observational and processed information with other Regions, either by the main trunk circuit or by other special inter-regional circuits.

7.3.3.3 The Association agreed that the RTH Brasilia should be directly linked with the WMC at Washington by cable or by a circuit with similar tech nical characteristics. The Association stressed the obligation of the RTH at Brasilia to retransmit all southern and northern hemisphere data received from the WMC Washington to the RTHs at ~uenos AIres and Raracay, as required.

7.3.3.4 The Association, when adopting the regional telecommunication plan for the World Weather Watch set forth in Resolution 7 (IV-RA III), was aware that some minor adjustments to this plan would be required in order to fit it into the global telecommunication system plan to accommodate changing requirements 16 GENERAL SUMMARY of Members. The Association decided to authorize its president, in consultation with Members concerned, to adopt such minor changes on behalf of the Association. Resolution 7 (IV-RA III) was adopted.

7.4 Re-establishment of the Working Group on Meteorological Tele communications

7.4.1 The Association noted that in the years to come a major effort on the part of the Association would be required to bring about a regional tele communications system which would respond to the requirements of the WWW.lt concurred with the Executive Committee that the planning and establishment of WWW telecommunications 3hould be supported by the regional associations and their Members to the largest ext~nt possible. Taking into account the contri bution a working group on telecommunications could make in the future to devel op regional telecommunication, systems, the session decided to re-establish the working group as indicated in Resolution 8 (IV-RA III).

7.4.2 The session agreed that it would be imperative that the re-estab lished Working Group on Meteorological Telecommunications should meet at two yearly intervals. It felt that the work of this group is of general interest to the Organization and should, therefore, be financially supported by WMO.

7.4.3 In addition to the full meetings of the Working Group on Meteorolo- gical Telecommunications, it would be necessary that representatives of the three regional telecommunication hubs meet at frequent intervals in order to co-ordinate the implementation of the facilities at their respective centres.

7.4.4 The Association endorsed the request of the eighteenth session of the Executive Committee that the Secretary-General should assist regional asso ciations in planning their regional telecommunication networks. The Association requested the Secretary-General to support the work of the RA III Working Group on Meteorological Telecommunications to the largest extent possible. For this purpose the Secretary-General was requested to make arrangements for giving the working group technical advice whenever required., In this connexion, the Asso ciation felt that the Secretary-General should assist Members in implementing their meteorological telecommunication centres and in setting up the national collection networks, if requested.

8. HYDROMETEOROLOGY (Agenda item 8)

8.1 The Association noted with appreciation the report of the Working Group on Hydrometeorological Questions. Great interest was expressed in the Guide to Hydrometeorological Practices. It was noted that the Spanish trans lation of the first four chapters of the Guide had been revised by the working group.

8.2 During the session, a lecture on hydrometeorology was delivered by Mr. Alberto Martlnez, observer from ECLA. The participants expressed great in terest in this lecture and as a result it was published and distributed to all delegates at the session.

8.3 The observer from the United States announced that an international conference entitled "Water for Peace" would be convened from 23-29 May 1967, in Washington, D.C. GENERAL SUMMARY 17

8.4 The Association was asked to reconsider the desirability of exchanging precipitation data at six-hourly intervals on a regional basis. This ques tion was considered under item 14.3.2.

8.5 It was decided to re-establish the Working Group on Hydrometeoro- logy, and the Association adopted Resolution 9 (IV-RA III) to this effect.

9. MARITIME METEOROLOGY (Agenda ;~em 9)

9.1 Coverage of ships' reports

9.1.1 Surface observations

9.1.1.1 The Association noted that the data coverage in the South Atlantic and South Pacific was inadequate for synoptic and for maritime safety purposes. It therefore again urged Members to continue their efforts to recruit more se lected and supplementary ships and, in addition, auxiliary ships, to furnish reports from sparse-data areas in Region III.

9.1.1.2 In this connexion, the Association noted a recommendation of its Working Group on Problems Relating to Meteorological Reporting by Ships and to Forecasting for Shipping Purposes that the establishment and improvement of port meteorological liaison officer services in the Region was an essential tool towards improvement of quantity and quality of ships' observations. Reso lution 10 (IV-RA III) was adopted. Acting on the recommendation of the working group, the president of RA III requested an inquiry among Members of the Association regarding port meteorological activities. The re-established working group is requested to examine the results of the above inquiry with a view to formulating specific proposals for the establishment of port meteoro logical services in the Region. At the same time the Association considered it necessary to request the Secretary-General to distribute as soon as possible the Spanish version of the"Manual on Port Meteorological Office Activities"among the Members of RA III.

9.1.1.3 Having in mind the need for more data from ocean areas of Region III the Association noted Recommendation 13 (CMM-IV) and decided to urge its Members to implement this recommendation.

9.1.2

The Association was informed of an interesting study on the use of mobile ships as platforms for upper-air observations. Details of this study are found in WWW Planning Report No. 7 - Meteorological Observations from Mobile and Fixed Ships. This report had been distributed to all Members of the Organization. The Association noted that two countries of the Region were actively engaged in setting up radiosonde programmes on ships plying in the South Atlantic. But up to now the financial problems for implementing these programmes could not be resolved. The AssociaUbn stressed the need for upper~air data in the South Atlantic and Pacific. It urged its Members to study actively the implementa tion of Recommendation 14 (CMM-IV). 18 GENERAL SUMMARY

9.1.3

The Association noted Resolution 22 (Cg-IV) and felt that detailed studies should be undertaken on ways and means to set up ocean weather ship stations at locations specified in Resolution 2 (IV-RA III). It requested its president to consult Members of the Association on the technical and financial possibillties of establishing,within the framework of WWW, ocean weather sta tions in Region III.

9.2 Regional delineation of the collection zone in Region III

By Resolution 11 (66-RA III) - Collection and dissemination of ships' weather reports - adopted by the president of RA IlIon behalf of the Association, the Association decided that, for the collection of ships' weather reports, Region III should be considered as a single zone. This decision has already been incorporated in Map A published in the new edition of Volume D of WMO Publication No. 9.TP.4. The session confirmed the above decision, therefore no further decision on this matter was found necessary. The Association decided that Resolution 11 (66-RA III) should be maintained.

9.3 Extension of the RA III collection zone to south of 600 S

The Executive Committee Working Group on Antarctic Meteorology con sidered the problem of collection of ships' weather reports from the area south of 600 S. It felt that it was impracticable to establish coastal radio stations on the Antarctic continent or on islands south of latitude 600 S. At its eight eenth session the Executive Committee agreed with the proposal of the EC Working Group on Antarctic Meteorology that, for the purpose of the collection of ships' weather reports, Regional Associations I, III and V should be invited to include the relevant sectors of the Antarctic in their zone(s) of responsibility for the collection of ships' weather reports. The Association complied with the EC re quest and adopted Recommendation 2 (IV-RA III). The Association decided that before implementing this recommendation it would be necessary to request the opinion of the Members signatories of the Antarctic Treaty.

9.4 Present and future network of coastal radio stations

9.1.1 The Association noted Map A included in Volume D of WMO Publication No. 9.TP.4,showing the present position in respect of existing coastal radio stations designated for the reception of weather reports from ships. The cri teria which these stations should satisfy are given in Part I of the annex to Recommendation 11 (CMM-IV). The Association felt that the number of coastal radio stations in Region III, in particular on the northern part of the west coast of South America, was insufficient. The Association stressed the import ance of implementing Resolution 18 (II-RA III) fully at an early date. 'l'he impor tance of establlshment of new HF radiotelegraph stations designated for recep tion of weather reports from high seas shipping Ivas particularly stressed.

9.4.2 However, the Association felt that further studies on the need for additional coastal radio stations would be required. It stressed,in particular, that a fact-finding study should be conducted by the Secretary-General on the following points:

(a) Plans of Members concerned to implement Resolution 18 (II-RA III); GENERAL SUMMARY 19

(b) Plans of Members to improve the present network of radio coastal stations, in particular the use of HF radio frequen cies by stations already designated. The results of their in quiries should be made known to the president of the Associa tion and to the Working Group on Maritime Meteorology for examination.

9.5 Provision of weather forecasts to shipping and marine activities

9.5.1 By Recommendation 15 (CMM-IV), approved by Resolution 14 (EC-XVII), the following allocation of responsibility for the preparation and issue of forecasts for shipping,in compliance with Technical Regulation 10.2.1.1., to Members of RA III was made:

Country Area of responsibility

0 Argentina Sea areas south of 33 S between 200 W and 700 W;

Brazil Atlantic waters west of 35 0 W from 3 0 N to the Equator, and west of 200 W from the Equator to 33 0 S;

Chile Ocean areas south of 17°S between 1200 W and 700 W; o Peru Pacific Ocean east of 120 W from the Equator ~o 170 8.

9.5.2 In Recommendation 15 (CMM-IV) the following responsibilities were placed upon Regional Associations:

(a) To arrange for full implementation of the revised plan for the provision of shipping forecasts;

(b) To . arrange that, whenever a Member responsible for issuing shipping forecasts for a given area is no longer· able to provide thi~ service, shipping forecasts for the area(s) con cerned continue to be provided.

9.5.3 Since Recommendation 15 (C~I-IV) as far as RA III is concerned is not fully implem.ented, the Association agreed to urge Members concerned to im plement their part of the plan as soon as possible. If a Member is unable to provide the service for which it is responsible, the president should be in formed and should take appropriate action in accordance withparagra:ph 4 under nRecommends ll of Recommendation 15 (CMM-IV). Resolution 11 (IV-RA III) was adopted.

9.6 Use of geographical indication in MAFOR code (PM 61.C)

9.6.1 The Association noted Resolution 17 (CMM-IV) by which regional associations were invited to ar~ange for the allocation of suitable figures as in dications for maritime areas (AAA) as used in PM 61.C. The figures 300-399 were allocated to Region III. The RA III Working Group on Problems Relating to Meteo rological Raporting by Ships and to Forecasting for Shipping Purposes suggested the following assignment of AAA figures: 20 GENERAL SUMMARY

Colombia 300 305 Venezuela 306 311 Guyana 312 314 Surinam 315 317 French Guiana 318 - 320 Brazil 321 336 Uruguay 337 342 Argentina 343 - 357 Falkland Islands (Malvinas)* 358 - 367 Chile 368 382 Peru 383 -392 Ecuador 393 398

9.6.2 The Association noted the above suggestions and authorized its president to consult all the Members of RA rrr on this proposed distribution before adopting it.

9.7 Up-dating of the information contained in Volume D, WMO Publication No. 9.TP.4

The Association felt that the information contained in Volume D of WMO Publication No. 9.TP.4 was not always up to date and the supplements reach Members with great delay. It agreed that Members should be reminded of their obligation to inform the Secretary-General in time of changes as regards the data to be published in Volume D. The Association requested the Secretary General to do his utmost in keeping Volume D up to date by ensuring rapid repro duction and distribution of the information of data received from Members.

9.8 Establishment of a Working Group on Maritime Meteorology

The Association felt that there are many problems in the field of maritime meteorology which have to be resolved between the fourth and fifth sessions of the Association. It therefore decided to establish a Working Group on Maritime Meteorology and to give to this group as terms of reference the study of all regional problems concerning this matter. Resolution 12 (IV-RA III) was adopted.

9.9 Visual storm warning signals

The Commission for Maritime Meteorology has adopted an internation al system of visual storm warning signals, which provide assistance to ship ping and fishing in coastal waters. Because of the importance of these signals, the Association felt that there is a need to collect information on the systems of visual storm warning signals at present used by Members of RA III. Therefore, the Association requested the Secretary-General to obtain from Members the in formation on:

(a) Systems at present in use in their respective countries;

(b) Local difficulties in the adoption of the international system.

* A dispute exists between the Governments of Argentina and the United Kingdom of Great Britain and Northern Ireland concerning sovereignty over the Falk land Islands (Malvinas). GENERAL SUMMARY 21

The results of the inquiry should be distributed to all Members of RA III and to the Working Group on Maritime Meteorology of RA III.

10. AERONAUTICAL METEOROLOGY (Agenda item 10)

10.1 The Association considered the action required within the Region to improve the facilities and services for aeronautical meteorology. It was also asked to express its views regarding the possible contribution of World Weather Watch to civil aviation. In this respect it was noted that regional meteorolo gical centres yet to be designated could provide assistance to civil aviation in their respective areas~ It was also noted that there are plans to proceed along the lines of the MET/OPS recommendations concerning the centralization of aeronautical forecasting services. However, it was agreed that the developments foreseen through the WWW and the above-mentioned centralization measures should ultimately be co-ordinated for the benefit of civil aviation.

10.2 The Association noted that the forthcoming requirements of civil aviation call for the development of facilities and techniques which, although accepted as necessary, could not be immediately implemented owing to their financial implications. Furthermore, the Association realized that the asso ciated applied research programmes also entail considerable expense. However, the Association will follow the developments in these fields with great in terest.

10.3 The Association recognized that the most urgent requirement for the needs of supersonic transport aircraft was to establish an adequate network of upper-air observations between 100 mb' and 10 mb and adopted Resolution 13 (IV-RA III) to this effect.

10.4 Considering the scarcity of aircraft observations throughout the Region, the Association decided to urge Members to adopt the measures required to make certain that the aircraft operating within their flight information regions implement the· pertinent international and regional procedures. In par ticular, this measure should be adopted by operators flying aircraft of their own national registry. The methods suggested are recorded in Resolution 14 (IV-RA III).

10.5 Recognizing the value of familiarization flights for aviation forecasters, the Association wished to encourage Members to use these flights to enable the forecasters to check during flight the forec.ast they have prepared, to understand better the point of view of the flight crews and to facilitate visits to Meteorological Services in other countries as well as contacts with forecasters belonging to those Services. This is recorded in Resolution 15 (IV-RA III).

10.6 The importance of the exchange, through bilateral arrangements between Members, of practising forecasters for agreed periods of duty was also recognized and this is recorded in Resolution 16 (IV-RA III).

10.7 The Association was aware that all Meteorological Services in the Region do not yet have a section devoted exclusively to aeronautical meteoro logy and it hoped that the Members concerned would consider the establishment of an aeronautical meteorological section to better implement the pertinent 22 GENERAL SUMMARY decisions of WMO in this field. It was further suggested that these aeronau tical meteorology sections develop, together with the other air navigation ser vices, the co-ordination measures required to improve the services to civil aviation. In the event that this section came under the jurisdiction of an agency other than the National Meteorological Service, all possible efforts should be made to achieve excellent co-ordination between the agencies con cerned.

10.8 The Association wished to remind Members of the content of Reso- lution 7 (I-RA III) - Meteorological reconnaissance flights. The reso'lution suggests that valuable meteorological data can be obtained from unscheduled flights, especially when these flights are made over those areas from which no regular synoptic data are available.

11. CLIMATOLOGY (Agenda item 11)

11.1 The Association examined the existing network of the CLIMAT and CLIMAT TEMP stations in the Region. It was suggested that it would be very desirable for all Members to add stations to this network as required by Recommendation 1 (CCI-IV). Taking into account this suggestion, Resolution 17 (IV-RA III) was adopted. The Association wished to stress that CLIMAT and CLIMAT TEMP data should be considered as operational data and, therefore, should not be delayed or omitted from the scheduled transmissions even if quali ty control measures have no.t been completed. If necessary, corrections can always be made when t.hese data are mailed to the USWB 1veather Records Center in Asheville for ~ublication in the "Monthly Climatic Data for the World".

11.2 The Association stUdied the possibility of establishing a regional network of reference climatological stations. Some countries are now giving consideration to setting up these stations at locations where the exposure would remain essentially unchanged over a very long period. It was agreed that each country wou~d forward its list of reference climatological stations to the Secretariat as soon as possible.

11.3 The Association noted that some Members have not yet prepared the climatological summaries and descriptive climatological memoranda neces sary to satisfy the requirements of civil aviation. As a consequence, Reso- lution 18 (IV-RA III) was adopted. .

11.4 The Association examined with interest the proposal of Region IV for the establishment of a meteorological data centre for Latin America. Re gional Association IV adopted Resolution 12 (IV-RA IV) by which it established a working group with the following terms of reference:

(a) To determine the requirements for a suitable processing, archiving and pUblication centre; (b) To recommend an appropriate location for the centre; (c) To recommend an organizational structure; (d) To suggest arangements for necessary financial support; (e) To report to the president of Region IV, before the end of 1967, in the form of a draft resolution suitable for pre sentation to the Members, for approval by a postal ballot. GENERAL SUMMARY 23

Recognizing that this proposed centre might also meet the needs of Region III, Region IV invited Region III to consider this proposal and, if in agreement, to designate an appropriate number of experts from Region III to serve on this group. The Association fel.t that the proposal should be examined in greater detail and it was decided that the best way to accomplish this would be to invite three experts from South America to serve on the Region IV Working Group on the Establishment of a Meteorological Data Centre.

The following experts were chosen:

Mr. Vicente G6mez Ecuador Dr. Juan Hoffmann Argentina Dr. J. Marden dos Santos Brazil

11.5 The Association noted with pleasure the progress made by the Working Group for the Preparation of a Climatic Atlas for South America. However, it noted that much more work remains to be done bef-ore the final publication will be available. The plan approved by the second session of the Association, which envisages preparation of two subregional atlases, was deemed to be inefficient and was discarded. The new plan will be to proceed with the preparation of one regional atlas. Argentina was requested to assume this responsibility and a rapporteur was designated to carry out this work in Resolution 19 (IV-RA III).

12. METEOROLOGICAL TRAINING (Agenda item 12)

12.1 The Association reviewed the different steps taken by WMO since Fourth Congress (1963) in order to fulfil the responsibilities of the Organiz ation concerning professional meteorological training in general and, in par ticular, as regards Region III.

12.2 It noted with satisfaction the co-operation of WMO in the training programme of personnel at university level, Class I, in the Federal University of Rio de Janeiro as well as the establishment of a Chair of Meteorology at the University of Costa Rica.

12.3 As regards the courses for aeronautical forecasters given at the University of Buenos Aires, the Association expressed its desire to continue using these facilities as much as possible, as well as the scholarships offered to this effect by WMO.

12.4 The Association noted with satisfaction the statement made by the delegate of Chile, as regards the granting of university status to the studies for the training of Class II personnel, made at the Aeronautical Technical School of the Chilean Air Force, associated to the State Technical University. The Association noted also with satisfaction the fact that this school is open to students from other Latin American countries.

12.5 The Association noted with satisfaction the announcement mane by the delegation of Brazil that admission to the course for the training of Class I meteorologists at the University of Brazil is open to all Class II meteorologists, from any country, without the necessity of passing an entrance examination. 24 GENERAL SUMMARY

12,6 The Association was also informed by the delegation of Vene7-uela of the opportunities offered by the Central University of Venezuela to include fellows in the training courses for Class I meteorologists.

12.7 It noted that the following projects will be included in the Regional Programme of Technical Assistance for the two-year period 1967-1968, jointly for Regions III and IV:

(a) Seminar for training of national instructors of Class III and IV meteorological personnel, which will be organized during 1967 in Santiago de Chile, with the help of the United Nations Economic Commission for Latin America (which has agreed to prcvide the local facilities) and with the collaboration of the Meteorological Office of Chile;

(b) Seminar for training on synoptic analysis and forecasting in the tropics, which will probably take place in 1968. The delegation of Brazil expressed the offer of its country to act as host country for the Seminar.

12.8 The Association noted the Special Fund project, recently approved, Development of Meteorological Services in the Caribbean, which will provide facilities for the professional training of Classes II, III and IV in general meteorology, as well as in specialized fields. This point is of special interest for the countries whose language is neither Spanish nor Portuguese, viz. Guyana and Surinam.

12.9 As regards scholarships, the Association was informed that those countries wishing to benef'i t from the opportunities offered by the Universities of Buenos Aires, Rio de Janeiro, Santiago y Caracas, and which are not able to pay for the students' expenses, should take the necessary steps in order to in~ clude scholarships within the UNDP programmes for the respective countries, or to make arrangements with a view to obtaining scholarships from donating coun tries who wish to offer help. In this respect, the observer from the United States stated that ther.e are scholarships available, offered by his country in accordance with the plans for development of countries of the nAyuda Americanan (American Assistance) administered by the United States Agency for International Development, which maintains missions in several countries.

12.10 The Association noted with interest the statement made by the United States observer that his country offers opportunities to Latin American countries for training in tropical meteorology as well as in other specialized fields of applied meteorology.

12.11 The Association expressed its desire that the Secretariat publish a Spanish version of the nPlan for the Development of Professional Meteorological Training in South American, duly brought up to date.

12.12 As regards the decision of the Executive Committee that, in principle, it is justified to give the status of WMO Guide to Technical Note No. 50, the Association expressed its desire that the president of the Association col lect the opinions of Members in this respect and prepare a report to be submitted to Fifth Congress, explaining the opinion of the Association on this matter.

12.13 The Association, in accordance with paragraphs 12.11 and 12.12, and considering the urgent need to intensify the training of professional meteoro logical personnel in South America, adopted Resolution 20 (IV-RA III). GENERAL SUMMARY 25

13. TECHNICAL CO-OPERATION (Agenda item 13)

13 .1 Technical assistance resources

13.1.1 The Association listened with interest to the Chief of the Latin American Division for Technical Co-operation of WMO, who explained that tech nical assistance may be obtained:

(a) Through the technical co-operation programmes of the United Nations in which the Organization participates;

(b) Through the WMO New Development Fund (NDF).

13.1.2 In connexion with the United Nations programmes, the fact was pointed out that the former Extended Programme of Technical Assistance and the Special Fund have been merged as of 1 January 1966, into the United Nations Development Programme (UNDP).

In the administration aspects, both programmes have merged completel~ but the s~ecial characteristics of both of them are to be maintained for some time. At present th~ programmes are called:

(a) Technical Assistance Section of the UNDP;

(b) Special Fund Section of the UNDP.

13.1.3 In connexion with the WMO New Development Fund, it was noted that the total allocation made by the Fourth Congress for the NDF during the fourth financial period (1964-1967) was practically exhausted and that new projects could only be approved if s~vings were made after all approved projects were executed.

13.2 Assistance within the Technical Assistance Section of the UNDP

13.2.1 The Association noted the information given on the technical assistance furnished during the last few years and on the technical assistance to be furnished within the 1967-1968 programme to different countries in the Region.

13.2.2 Regarding the regional projects of technical assistance within the UNDP, it was noted that the following projects had been carried out for Regions III and IV jointly:

(a) Seminar on Aeronautical Meteorology Formation, which was held in Costa Rica in November and December, 1965;

(b) Seminar on Hydrometeorological Instruments, Observations and Networks Formation, which was held in Campinas, Brazil, in September, 1966;

(c) Participation of the WMO in the evaluation of Hydraulic Re sources in Latin American countries, carried out by the United Nations Economic Commission for Latin America (ECLA). 26 GENERAL SUMMARY

13.2.3 With respect to the hydrometeorological seminar at Campinas, several delegates expressed their appreciation to WMO for having given assistance to the participants of the respective countries, as well as to the Brazilian Government for the excellent organization of the seminar and considered the knowledge acquired during the seminar to be of great usefulness for the hydrometeorologi cal development in their countries.

13.2.4 The Association also showed considerable interest in connexion with the project of Evaluation of Hydrometeorological Resources of ECLA, especially with respect to the work carried out by the WMO expert. The delegate of Uruguay informed the session of the great usefulness of the evaluation as far as his country was concerned. In view of such interest, the ECLA observer noted that the Evaluation of Hydraulic Resources group is to terminate this year, as an additional task, the estimates of gross runoff potential for all Latin America.

13.2.5 The Association noted that the regional programme for the period 1967-1968 includes the following projects for Regions III and IV:

(a) Assistance for the establishment of a Chair of Meteorology at the University of Costa Rica;

(b) Training Seminar on Synoptic Analysis and Prognosis ln the Tropics;

(d) Continuation of WMO participation in the ECLA Evaluation of Hydraulic Resources;

(e) Research in meteorological communications needs ln Central America.

13.2.6 In connexion with the Association1s proposal as discussed under agenda item 14.4 - Agrometeorology - to carry out a seminar on this matter (see paragraph 14.4.2), the Association was informed of the advisability of taking this request into account when the Members formulate their regional project proposals to be included in the UNDP 1969-1970 programme.

13.3 Assistance within the UNDP Special Fund section

13.3.1 The Association noted with great interest and satisfaction the results of the three Special Fund projects relative to hydrometeorological networks in Ecuador, Chile and Peru, which were terminated in 1965. The im pact of such projects on the development and improvement of hydrometeorolo gical services, and the profit already being obtained from the basic inform ation in the planning of several hydro-electrical projects and irrigation systems and in other economic fields now developing in the respective coun tries, is appreciable.

13.3.2 The Association noted with interest the Special Fund project approved for Brazil, Development of Meteorological Servic·~s in the Northeast of Brazil.

13.3.3 The Association was informed that a new SpecialFund project would very likely be approved, on request of the Colombian Government, to improve the national Meteorological Service, and that a similar proposal would be presented by Paraguay in the near future. GENERAL SUMMARY 27

13.4 Assistance within the WMO New Development Fund

13.4.1 The Association noted with satisfaction the development of the following projects under execution:

(a) Ecuador: Establishment of a radiosonde station in San Crist6bal (Galapagos);

(b) Brazil: Improvement of meteorological communications in South America (establishment of an exchange centre of the southern hemisphere in Brasilia);

13.4.2 The Ecuador project is progressing favourably, the installation stage being almost finished. It is expected that the radiosonde station in San Crist6bal (Gal~pagos) will initiate its regular observations programme in the near future.

13.4.3 The Brazil project was considered by the Association as an improvement of extraordinary importance in the meteorological communications system for South America.

JJ .. 4~4 The Association, recognizing the important contribution of the University of Buenos Aires in the training of meteorological personnel in Latin America, felt that the new facilities that will be avaj]able after the NDF project has been carried out will be very useful.

13.5 Application for a regional project of the Special Fund f~r the Amazon basin

13.5.1 The Brazilian delegation explained to the session the importance a Special Fund regional project for the establishment of climatological and agroclimaiological stations, to obtain the necessary basic information, would have on the agricultural development of the Amazon basin.

13.5.2 The Association considered that the execution of a Special Fund project in the Amazon Basin, as stated by the Brazilian delegation, would be of great importance for the economic development of South America; Resolution 21 (IV-RA III) was conse~uently adopted.

14. MISCELLANEOUS TECHNICAL QUESTIONS (Agenda item 14)

14.1 Barometry (Agenda item 14.1)

14.1.1 The Association noted that little progress had been accomplished in barometer comparisons since its second session and, in an endeavour to improve this situation, Resolution 22 (IV-RA III) was adopted.

14.1.2 The problem of reduction of barometric pressure to sea-level was also discussed by the Association. It was noted that the Commission for Synoptic Meteorology had been unable to arrive at a solution to this problem. 28 GENRAL SUMMARY

It was also noted that Regional Association IV had decided to adopt the method used by the United States as an interim solution. The Association envisaged that station pressure values might in the future be reduced by computers at regional meteorological centres, thereby achieving uniformity and better analyses of the pressure field. In the meantime, the Association decided that the president should consult Members to determine the various pressure r6duction formulae. After studying these various methods it might then be posslble for the Associa tion to determine standard techniques for pressure reduction.

14.2 Radiation (Agenda item 14.2)

14.2.1 The Association noted the progress in the field of solar radiation that had been achieved since the last session. This is briefly summarized as follows:

Argentina has five special stations and 20 ordinary stations measuring radiation; radiation measurements in the upper air have also started.

Brazil is currently operating 23 radiation stations and will increase this net work to 250 stations in five years'time. A centre of solar radiation studies was established in 1965 in Piracicaba, S.P.

Chile operates 20 stations and will soon set up a national centre to calibrate radiation instruments.

Colombia has a small network of stations operated by various agencies. These will soon be consolidated into a national neLwork.

Ecuador has five stations measuring total solar radiation with actinographs.

France operates one station at Cayenne.

Peru has 15 instruments obtaining radiation data at different strategic loca tions.

Uruguay makes observations of solar radiation at one station (Montevideo).

Venezuela is operating 38 radiation stations, 18 of which have been operating since 1954. Data are sent to the U.S.S.R. for publication in "Solar Radiation Balance Data".

14.2.2 The Association accepted with pleasure Argentina's offer to establish a regional radiation centre.

14.2.3 The Association expressed its appreciation to the U.S.S.R. for its publication "Solar Radiation Balance Data" issued under WMO auspices. Members making solar radiation measurements were encouraged to send their data promptly to the U.S.S.R. for inclusion in this publication. The Se~retary-General was asked to assist Members in collecting data for transmission to the U.S.S.R., if requested.

14.2.4 Finally the Association decided to establish a Working Group on Solar Radiation with terms of reference as indicated in Resolution 23 (IV-RA III). GENERAL SUMMARY 29

14.3 Cades (Agenda item 14.3)

14.3.1 Under this agenda item the Assaciatian reviewed current regianal cades as published in lillO Publicatian NO'. 9.TP.4, Valume B, Chapter II, Sec tian IV. The particular paints which were examined have been set aut in the fallawing paragraphs. Amendments that the Assaciatian decided to' make to' the regianal cades have been incarparated in Resalutian 24 (IV-RA III).

14.3.2 Cading af the amaunt af precipitatian

At the re~uest af the Cammissian far Hydrametearalagy (paragraph 2.2 af the General Summary af CHy-II), the Assaciatian discussed the regianal cading pracedures far reparting six-haurly precipitatian amaunts at main synaptic haurs (0000, 0600, 1200 and 1800 GMT). The Assaciatian faund that the present regianal repartingpracedures were ade~uate.

14.3.3 Changes in the regianal cading practices af surface abservatians

The changes adapted by Recammendatians 9, 10 and 11 (eMS-IV) In internatianal cading far surface statians re~uired a review af the regianal cading practices. Same changes in the preseilt pracedur-es were necessary.

14.3.4 PILOT cade farm - Appraximatian to' the isabaric surfaces

The Assaciatian felt that when nO' pressure measurements were avail able wind data shauld be reparted in the PILOT and PILOT SHIP cade farm using the best passible appraximatian to' the isabaric surface.

14.3.5 Changes in the regianal cading practices af upper-air abservatians

In the light af Recammendatians 14 and 15 (CSM-IV), the Assaciatian reviewed the regional coding pracedures far PILOT, PILOT SHIP, TEMP and TEMP SHIP cade farms.

14.3.6 Re-establishment af the Warking Graup an Cades

The Assaciatian felt that it was necessary tare-establish a Warking Graup an Cades. Resalutian 25 (IV-RA III) was adapted.

14.4 Agrametearalagy (Agenda item 14.4)

14.4.1 The Assaciatian wished to' thank the Chairman af the Working Graup an Agricultural Metearalagy far his repart which cantained detailed infarmatian af the activities af the Regian in this field. This Regian has lang recagnized that the fruitful develapment af agricultural metearalagy and climatalagy depends an clase natianal and internatianal callabaratian between metearalagists, climat alagists and agricultural experts. The fallawing Members have active agrametea ralagical pragrammes: Argentina, Brazil, Chile, Calambia, Ecuadar, French Guiana, Peru, Uruguay and Venezuela. Because af the impartance af the applicatian af metearolagy and climatology to' agriculture, the Assaciatian established a Warking Graup an Agricultural Metearalagy and Climatalagy In Resalutian 26 (IV-RA III). 30 GENERAL SUMMARY

14.4.2 The Association considered that there was an urgent need to raise the general level of knowledge in this field throughout the Region and that it would be particularly advantageous to convene a seminar on this subject as soon as possible, with the assistance of the United Nations Development Programme (see also paragraph 13.2.6 of the General Summary).

14.5 Ground radar weather observations (Agenda item 14.5)

14.5.1 The Association noted with pleasure that some progress had been made in the ground radar weather observation network. France is now installing a meteorological radar at Cayenne. It is expected to be in operation by the end of the year. Argentina is operating a radar in the interior of the country. This station nas been installed specifically for studying hail prevention but it also transmits observations to other stations in the area. Venezuela has been operating a meteorological radar in Ciudad Bolivar for the last two years. An other radar is being installed at Pico Espejo at an altitude of 4,700 metres;it is expected to be in operation in 1967. The Association expressed the hope that there would be further increases in the radar weather observation network and adopted Resolution 27 (IV-RA III) to this effect.

15. NOMINATION OF MEMBERS OF WORKING GROUPS AND NOMINATION OF RAPPORTEUR~ (Agenda item 15)

15.1 A small ad hoc committee was established to nominate chairmen of working groups and rapporteurs. In accordance with Regulation 30 of the General Regulations, the membership of working groups and rapporteurs was drawn up and the names of the experts were included in the relevant resolutions.

16. REVIEW OF THE RESOLUTIONS AND RECOMMENDATIONS ADOPTED BEFORE THE FOURTH SESSION OF RA III INCLUDING EXECUTIVE COMMITTEE RESOLUTIONS RELATING TO RA III (Agenda item 16)

16.1 The Association examined its resolutions and recommendations adopted before its fourth session in the light of the information contained in a docu ment submitted by the Secretary-General. The general conclusions of the Associa tion on this Agenda item are incorporated in Resolution 29 (IV-RA III).

16.2 The Association stressed the need to integrate all meteorological activities on a national level and for regional co-operation to this end. Reso lution 28 (IV-RA III) was adopted.

16.3 The Association felt it important that all Members of Regional Asso- ciat,ion III be represented by an adequate delegation at Fifth Congress and con sequently adopted Resolution 30 (IV-RA III).

17. ELECTION OF OFFICERS (Agenda item 17)

17.1 A Nomination Committee composed of the principal delegates of Argentina, Chile, Colombia and Peru was established by the Association with Mr. F. Cancelado as chairman and Mr. S. Bravo as secretary.

17.2 Mr. A. Garc{a (Ecuador) was elected president of the Association and Mr. N. S. Bravo Flores (Chile) vice-president. GENERAL SUMMARY 31

18. DATE AND PLACE OF THE FIFTH SESSION (Agenda item 18)

During the last meeting, the principal delegate of Colombia, on behalf of his Government, extended an invitation to the Association to hold its fifth session in Bogot~, Colombia. The Association noted the invitation with great appreciation and requested its president to initiate appropriate action in accordance with Article 17 of the WMO Convention.

19. CLOSURE OF THE SESSION (Agenda item 19)

19.1 The principal delegate of Brazil, In the name of all participants, expressed his sincere thanks to the president for his hard work during the ses sion. He also expressed gratitude to the Government of Ecuador for the kind hospi·tali ty extended to the participants and for the excellent fac iIi ties plac ed at the disposal of the Association.

19.2 The president expressed his thanks to all the participants for the great interest and activity they had shown in the discussions. In particular he thanked the chairmen of the working committees, the members of the lrMO Secret ariat attending the session and the local secretariat for their hard work.

On behalf of the Association he thanked the Ecuadorian authorities for their generous invitation and for the excellent facilities provided for the session. )2

RESOLUTIONS ADOPTED AT THE SESSION

Res. 1 (IV-RA III) - WORKING GROUP ON REGIONAL REQUIREMENTS FOR BASIC METEOROLOGICAL DATA (PROCESSED AND UNPROCESSED) FROM INSIDE AND OUTSIDE THE REGION

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) That, while it is the prerogative of each Member to state its requirements for processed and unprocessed meteorological information based on its obligations for services and research programmes and its processing capabilities, there is a reciprocating effect be tween these requirements and the internationally arranged systems and facilities,

(2) That therefore the efficient planning of meteorological systems and facilities requires the prior establishment of a co-ordinated statement of requirements for basic meteo rological data (processed and unprocessed) from inside and outside the Region, and that this calls for a systematic study which should be of a continuous nature in view of the rapid de velopment of the science of meteorology and its applications to the many fields of economic activities,

(3) That the needs of numerical processing techniques will playa prominent role in the determination of these requirements,

DECIDES:

(1) To establish a Working Group on Regional Requirements for Basic Meteorological Data (Processed and Unprocessed) from Inside and Outside the Region, for operational and re search purposes, with the following terms of reference:

(a) To secure from each Member a systematic study of its requirements for processed and unprocessed meteorological information, in function of its obligations for service research programmes, its processing capabilities and existing internationally arranged processing systems;

(b) To prepare, on the basis of the above information, a report containing a consolidated statement of these requirements for use during the second stream planning studies of the WWW and for submission to the fifth session of the Association;

(2) To invite the following experts to serve on the working group: Dr. Leandro Riedel Ratisbona Brazil Mr. Mario Ciliberti Argentina Mr. Juan Becerra G. Chile

(3) To nominat~ in accordance with Rule 30 of the General Regulations, Dr. Leandro Riedel Ratisbona as chairman of the working group.

------1 RESOLUTION 2 33

Res. 2 (IV-RA III) REGIONAL BASIC SYNOPrIC NETWORK

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1). Resolution 2 (II-RA III) kept in force by Resolution 4 (III-RA III),

(2) Resolution 33 (EC-XIV),

(3) Resolution 22 (Cg-IV),

(4) Resolution 5 (64-RA III),

(5) Paragraph 5.1.5 of the General Summary of EC-XVII,

CONSIDERING:

(1) That it is necessary to adopt a new basic network meeting both the defini tion of a basic synoptic network and the minimum spacing criteria adopted by the Executive Commii;tee,

(2) That the full support of all Members in implementing the regional basic synoptic networks is imperative if the World Weather Watch is to be realized,

(3) That it is of prime importance to adhere strictly to the standard hours of observations laid down in the WMO Technical Regulations,

DECIDES:

(.1) That the stations and observational programmes listed in Annex 1* to this resolution shall constitute the new basic synoptic network in South America;

(2) To establish a phased implementation programme comprising a two-year plan (1967-1968) and a four-year plan (1967-1970), details of which are given in Annex 2** to this resolution;

URGES Members:

(1) To spare no effort in their endeavours to implement the two- and four,year plans by the end of the years 1968 and 1970 respectively;

(2) To aim at the full implementation of the basic network by the end of 1971;

(3) To comply fully with the standard observation times laid down in the WMO Technical Regulations, particularly as regards the 0000 GMT surface observ.ations;

AUTHORIZES the president of the Association, in consultation with the Secretary General, to approve minor changes to the target plan network as may be required, and to bring them to the attention of Members by means of the procedures described in Annex 3*** to this resolution.

* See Annex I. ** See Annex II. *** See Annex III. 34 RESOLUTIONS 3, 4, 5

Res. 3 (IV-RA III) - PRINCIPAL LAND STATIONS IN REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) Technical Regulation 3.1.1.1 - Definition of Principal Land Stations,

(2) The definition of the basic network as adopted by the Executive Committee,

(3) Resolution 2 (IV-RA III),

CONSIDERING that it is desirable to maintain the highest possible standard in the reports of meteorological stations which are exchanged internationally,

DECIDES that the surface land stations included in the regional basic synoptic network of Region III should conform to the specifications laid down for principal land sta tions.

Res. 4 (IV-RA III) - ADOPTION OF THE REGIONAL PART OF PUBLICATION No. 9.TP.4, VOLUME C, CHAPTER II - REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) Resolution 3 (EC-VIII) - Inclusion of regional specifications and procedures in WMO Publication No. 9.TP.4,

(2) Paragraph 5.9.3 of the General Summary of the Abridged Final Report of the ninth session of the Executive Committee,

CONSIDERING that all regional decisions on meteorological telecommunications of a permanent nature should be included in WMO Publication No. 9.TP.4, Volume C, Chapter II,

DECIDES to approve the text of the Introduction to Region II~which is reproduced in the annex* to this resolution;

REQUESTS the Secretary-General to include in Publication No. 9.TP.4, Volume C, Chapter II - Region III - Introduction, all relevant telecommunication decisions of a perma nent character adopted by the Association at its fourth session.

* See Annex IV.

Res. 5 (IV-RA III) - IMPROVEMENTS IN THE REGIONAL COLLECTION OF SYNOPrIC INFORMATION

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) The need to ensure reliable and rapid collection of synoptic reports at territorial centres, RESOLUTIONS 6, 7 35

(2) That in some countries the public telephone and telegraph systems cannot cope with the requirement for rapid transmission of observational data for all synopt~c hours,

(3) That some countries use the switched telephone network for the collection of observational reports and that this system works very satisfactorily during day and night,

URGES its Members:

(1) To do th~irutrnost to ensure rapid and reliable collection of synoptic reports, in particular for 0000 and 0600 GMT, at the territorial centres;

(2) To study the possibility of installing low-powered SSB radio-telephony sets for the collection.> of synoptic report·s if the public telecommunication facilities cannot meet the neects 0:( meteorology".

Res. 6 (IV-Ri\. III) - ACKNOWLE~GEMENT OF RECEIPr OF TERRITORIAL DATA BY SUBREGIONAL BROADCAST CENTRES

THE REGIONAL ASSOCIATION FOR SOUl'H AMERICA,

NOTING that territorial broadcasts cannot always be received satisfactorily by the designated subregional broadcast centre,

CONSIDERING: >

(1) That it is of greatest importance to ensure the regular and reliable receipt of territorial data by subregional broadcast centres,

(2) That there is a need for repetition of the data when they are not properly received,

DECIDES that the Members of the Association should follow the following procedures in order to· ensure the reception of territorial data in the designate·d subregional broadcast centres: (a) Each subregional broadcast. centre should send, immediately after reception of a ·given territorial broadcast, ·a short service message reporting the difficulties experienced to the Member in charge of this territorial broad cast and requesting its repetition when necessary;

(b) Each territorial broadcast centre should, upon request for repetition of the broadcast, repeat it as early as possible or send a message to the subregional centre including the data requested.

Res. 7 (IV-RA III) - BROAD OUTLINE OF A REGIONAL TELECOMMUNICATION PLAN FOR REGION III FOR .. THE WWW IMPLEMENTATION PERIOD 1968-1971

THE REGIONAL·ASSOCI~TION FOR SOUTij AMERICA,

NOTING:

(1) Paragraph 5.1 of the General Summary of the work of EC-XVII,

(2) Paragraph 5.1 of the General Summary of the work of EC-XVIII, 36 RESOLUTION 8

(3) The responsibilities of regional associations in the field of telecommunica tions as defined in WMO PublicationNo. 9.TP.4, Volume C, Chapter II, Part II, paragraph 3,

CONSIDERING:

(1) The necessity of adopting a regional telecommunication plan which would allow all Members of RA III to participate fully in the World Weather Watch,

(2) The requirement of Members of the Association to receive observational and processed information, including warnings, to the extent needed to fulfil their national responsibilities,

DECIDES to adopt, subject to the approval of the World Weather Watch plan by Fifth Congress, the Broad Outline of the Regional Telecommunication Plan for Region III for the WWW Implementation Period 1968-1971 as set forth in the annex* to this resolution;

AUTHORIZES the president of the Association to approve minor amendments to the plan, in consultation with Members concerned, which might be necessary to fit it into the WWW global telecommunication system plan.

* See Annex V.

Res. 8 (IV-RA III) - WORKING GROUP ON METEOROLOGICAL TELECOMMUNICATIONS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING that there are many problems to be solved concerning meteorological telecommunications in the Region,

DECIDES:

(1) To re-establish the Working Group on Meteorological Telecommunications with the following terms of reference:

(a) To formulate recommendations relating to modifications of the existing and recommended regional telecommunication system;

(b) To formulate recommendations relating to regional telecommunications aspects of the World Weather Watch;

(c) To formulate recollmlendations relating to the operation of telecommunica tion facilities in the Region and in particular to keep under constant review the speedy collection, exchange and distribution of meteorologi cal information in the Region;

(d) To advise the president of the Association on the ways and means of assisting Members of the Region to bring about implementation of the decisions of the Associations in meteorological telecommunications;

(e) To advise the president of the Association on regional telecommunication matters and to study such telecommunication problems as are assigned to the group; RESOLUTION 9 37

(2) To invite the following experts to serve on the working group: Dr. Antonio W. Goldbrunner Venezuela Dr. Ivan Santos Bustamante Brazil Dr. J. Figueroa Uruguay Mr. Georges Sinthe French Guiana Mr. Alfredo Kroeger G. Chile Ing. Juan Vasonez Ecuador Mr. J. L. A. D'Hamecourt Surinam Mr. Oscar Vidal Argentina One expert to be designated by Peru One expert to be designated by Colombia

Additional experts wishing to participate in the work of the group may be nominated by any Member of the Association later;

(3) To select, in accordance with Regulation 30 of the General Regulations, Dr. Antonio W. Goldbrunner as chairman of the working group.

Res. 9 (IV-RA III) - WORKING GROUP ON HYDROMETEOROLOGY

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING the report of the Working Group on Hydrometeorological Questions,

DECIDES:

(1) To set up a Working Group on Hydrometeorology with the following terms of reference:

(a) To continue, as a matter of urgency, the work begun by the previous working group in revising the Spanish translation of the remaining chapters of the Guide to Hydrometeorological Practices;

(b) To maintain a continuing review of activities of regional interest in the field of hydrometeorology and recommend to the president of the Association any action that should be taken to promote or facilitate these activities;

(d) To consider the need for symposia, seminars and technical conferences for hydrometeorological purposes. If any such meetings are deemed de sirable, the group should convey their views to the president of the Association;

(e) To provide assistance to the president of the Association in all matters pertaining to the International Hydrological Decade;

(f) To determine how to exchange data for hydrometeorological forecasting purposes on river basins that extend across the borders of several coun tries. This exchange should become operational before 1 January 1968. 38 RESOLUTIONS 10, 11

(2) To invite the following experts to serve on the working group: Mr. Newton Velloso Cordeiro Brazil Mr. A. Hernandez Uruguay Mr. Augusto Llano Eck Chile Irg. Rafael Convit Venezuela Mr. Claudio Molina Ecuador Mr. Jose M. Raffo Argentina One expert to be nominated by Peru;

(3) To select, in accordance with Regulation 30 of the General Regulations, Mr. Newton Velloso Cordeiro as chairman of the working group;

(4) To request the working group to submit its report to the president of Region III not later than six months prior to the fifth session of the Association.

Res. 10 (IV-RA III) - PORT METEOROLOGICAL LIAISON OFFICERS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) Recommendation 23 (CMM-IV),

(2) Recommendation 24 (CMM-IV),

CONSIDERING:

(1) That the main link between shipping and Meteorological Services is the port meteorological liaison officer,

(2) That it is therefore necessary to establish port meteorological liaison officers in South American ports,

URGES Members to continue to establish and enlarge port meteorological liaison officers'services with a view to strengthening the link between Meteorological Services and shipping and fishing activities.

Res. 11·(IV-RA III) - PROVISION OF WEATHER FORECASTS TO SHIPPING AND MARINE ACTIVITIES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING Recommendation 15 (CMM-IV), approved by Resolution 14 (EC-XVII),

CONSIDERING:

(1) That in so far as Region III is concerned the revised plan for the provision of shipping forecasts is not yet fully implemented,

(2) That certain ocean areas in Region III are still not provided with shipping forecasts, RESOLUTION 12 39

URGES Members concerned

(1) To spare no effort in their endeavours to provide shipping forecasts for ocean areas, for which services have not yet been implemented, as indicated in the annex to Recommendation 15 (CMM-IV);

(2) To aim at full implementation by the end of 1967 and, if this is impossible, urges Members concerned to inform the president of Regional Association III and the Secretary General not later than July 1967.

Res.12 (IV-RA III) - WORKING GROUP ON MARITIME METEOROLOGY

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) The need for a complete and thoroughly developed regional plan for the collec tion and distribution of ships I weather reports,

(2) The need to keep under constant review the regional arrangements for the pro vision of meteorological information for shipping,

DECIDES:

(1) To establish a Working Group on Maritime Meteorology with the following terms of reference:

(a) To review the RA III arrangements for the collection of ships weather reports;

(b) To review the RA III arrangements for the provision of services to shipping, fishing and research vessels;

(2) To invite the following experts to serve on the group:

Mr. Miguel A. Rebolledo Argentina Mr. Renato Bittencourt Brazil 1Vlr • Americo Noble Uruguay Mr. Sergio Bravo Flores Chile Mr. Carlos Blandin Ecuador One expert to be nominated by Peru;

(3) That Members of the Association may nominate additional experts at any time;

(4) To select Mr: Miguel A. Rebolledo as chairman of the working group in ac cordance with Regulation 30 of the WMO General Regulations;

(5) To request the chairman of the working group to submit at yearly intervals progress reports to the president of RA III for circulation to all Members of the Association. 40 RESOLUTIONS 13, 14

Res. 13 (IV-RA III) - UPPER-AIR OBSERVATIONS BETWEEN 100 ME AND 10 ME

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING Resolution 33 (EC-XVIII),

CONSIDERING:

(1) That urgent action is required to improve both the quantity and quality of high-level upper-air observations,

(2) That many upper-air observations do not exceed 100 mb and that supersonic transport aircraft will require observations at 30 mb,

(3) That maps containing data up to 10 mb will be required to make forecasts for supersonic transport aircraft,

(4) That mean high-level maps will be needed to determine best routes for super sonic transport aircraft,

URGES Members to make every effort to ensure that their upper-air observations regularly reach at least the lO-mb level.

Res. 14 (IV-RA III) - METEOROLOGICAL OBSERVATIONS FROM AIRCRAFT

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) WMO Technical Regulation £"12. I;} 2.3,

(2) That the proposed new AIREP reporting form makes provision in Item 12 of Section 3 for the reporting of a wide range of supplementary information,

CONSIDERING~

(1) That aircraft observations are now being regularly processed by computers and therefore provide valuable data for numerical prediction programmes,

(2) That the greatest possible number of AIREPS are desired from flights over water and over uninhabited land areas,

URGES Members:

(1) To require all the airlines operating within their flight information regions to implement the current procedures concerning the performance 6f aircraft observations;

(2) To solicit the co-operation of airlines on their national registers to obtain more in-flight reports;

(3) To make greater efforts to collect and disseminate air-reports in accordance with approved procedures. RESOLUTIONS 15, 16, 17,. 18 41

Res. 15 (IV-RA III) - FAMILIARIZATION FLIGHTS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING Recommendation 9/11 (CAeM-III),

CONSIDERING that it is beneficial for aeronautical forecasters to participate in familiarization flights over the routes for which they forecast,

INVITES the attention of Members to the usefulness of familiarization flights for aviation forecasters with a view to improving the quality of the service rendered.

Res. 16 (IV-RA III) - EXCHANGE OF AERONAUTICAL FORECASTERS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING Recommendation 9/9 (CAeM-III),

INVITES Members to promote, through bilateral arrangements, a scheme of exchange of practising forecasters for agreed periods of duty, with a view to expanding knowledge of techniques and practices, and promoting concepts which will contribute to the development of the area forecast system.

Res. 17 (IV-RA III) - NE'IWORK OF CLIMAT AND CLIMAT TEMP STATIONS IN REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) Paragraphs 8.3.1.1 and 8.3.1.1.1 of the Technical Regulations,

(2) Paragraph 11.4 of the Guide to Climatological Practices (WMO Publication No. lOO.TP.44),

DECIDES that the network of stations transmitting CLIMAT and CLIMAT TEMP reports in Region III shall include those stations listed in the annex* to this resolution;

AUTHORIZES the president of the Association, in consultation with the Secretary General, to approve minor changes to the network as may be required;

REQUESTS the Secretary-General to bring such changes to the attention of Members of the Association.

* See Annex VI.

Res. 18 (IV-RA III) - AERONAUTICAL CLIMATOLOGICAL INFORMATION

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING WMO Technical Regulations L12.2~ 2.5.7 and Ll2.~ 42 RESOLUTION 19

CONSIDERING:

(1) That some Members have not yet prepared climatological summaries and descrip tive climatological memoranda relative to aerodromes and locations and to route segments of interest to civil aviation in accordance with WMO Technical Regulations,

(2) That ~ction is required to provide the above-mentioned information for the benefit of air transportation,

URGES Members:

(1) To assume their responsibilities concBrning the preparation of aeronautical climatological information, particularly that relative to international aerodromes and to those segments of the approved network of air-routes of South America encompassed within their territories;

(2) To publish this information and to disseminate it 'among the interested Members and users.

Res. 19 (IV-RA III) - RAPPORTEUR FOR THE PREPARATION OF A CLIMATIC ATLAS FOR SOUTH AMERICA

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) The report of the Working Group for the Preparation of a Climatic Atlas for South America,

(2) Resolution 6 (CCI-IV),

(3) The request of Fourth Congress that Regional Associations should speed up the arrangements for the preparation of climatic atlases for their Regions,

DECIDES:

(1) To appoint a Rapporteur for the Preparation of a Climatic Atlas for South America with the following terms of reference:

(a) To continue the work begun by the previous working group keeping in mind pertinent WMO specifications;

(b) To accelerate the preparation and publication of maps to be included in the regional climatic atlas;

(c) To provide guidance to users of climatic maps for hydrological, agri cultural and other applied climatological purposes;

(d) To use the standard period of the years 1931 to 1960 in regions where the density of the network corresponding to this period is inadequate; the periods 1941 to 1960 and 1951 to 1960 will be used also, after reduc tion to the standard period (1931-1960), if possible. If it is not pos sible to obtain the required density, reports from auxiliary stations for other periods will be used after reduc~ion to the standard period (1931- 1960) ; RESOr.,urION 20 43

(e) To assist the president in preparing a report containing detailed pro posals for financing the publication of a regional c·limatic atlas. This report is to be submitted to Fifth Congress in accordance with Resolu tion 2 (EC-XVII);

(f) To submit a report to the president on the progress obtained by the working group with appropriate recommendations six months prior to the fifth session of the Association;

(2) To invite Dr. Jose A. J. Hoffmann, from Argentina, to serve as Rapporteur for the Preparation of a Climatic Atlas for South America.

Res. 20 (IV-RA III) - PLAN FOR THE DEVELOPMENl' OF PROFESSIONAL METEOROLOGICAL TRAINING IN SOurR AMERICA

THE REGIONAL ASSOCIATION FOR SOurR AMERICA,.

CONSIDERING that there exists an urgent need to intensify the training of meteo rological personnel in South America,

NOTING:

(1) That the report, "Plan for the Development of Professional Meteorological Training in South America", published by the Secretariat, as well as Technical Note No. 50 constitute elements of considerable. help for meteorological training in South America,

(2) That it is necessary to bring up to date the information contained in the first of the two WMO publications mentioned in the previous paragraph and to consider the suitability of giving the character of a WMO Guide to Technical Note No •. 50,

(3) That in order that the Plan for the Development of Professional Meteorological Training in South America be implemented in an efficient way and on a ·sound basis, higher co operation and co-ordination are required among the Members of the Association,

URGES Memb.ers of the Association:

(1) To send to the president of the.Association, before 31 January 1967, the comments and recommendations they consider relevant, as well as suggestions on possible changes to the text of Technical Note No. 50, "The Problem of the Professional Training of Meteorolo gical Personnel of all Grades in the Less-developed Countries", with the purpose that the president may submit to Fifth Congress for consideration the collective opinion of the Associ ation regarding the suitability of giving the character of a WMO Guide to Technical Note No.50;

(2) To carry out a detailed study Of the present state of the training of meteo rological personnel in their respective countries, as a function of their educational and professional conditions, giving special emphasis to the difficulties encountered in satisfying the needs of professional meteorological perponnel and to send this study as soon as possible to the president of the Association;

(3) That those Members who have established meteorological courses at university level inform the president of the Association in detail as regards the possibilities they can offer to students from other countries both for the admission to university courses and the conditions under which the basic stUdies of mathematics and physics are valid; 44 RESOLUTIONS 21. 22

REQUESTS the president of the Regional Association, after having collected the information provided by the Members:

(1) To prepare a document to be submitted to Fifth Congress, expressing the collective opinion of the Association on the suitability of giving the character of a WMO Guide to Technical Note No. 50;

(2) To establish the amendments which have to be included in the WMO report "Plan for the Development of Professional Meteorological Training in South America" and to send them to the WMO Secretariat for consideration;

AUTHORIZES the president of the Association as regards paragraph (2) under REQUESTS, to establish a working group, made up in the way he considers most suitable, if he considers it necessary;

INVITES Members of the Association to designate a representative responsible for the collection of the required information, and to send to the president of the Association, as soon as possible, the name, position and address of the person nominated.

Res. 21 (IV-RA III) - APPLICATION FOR A SPECIAL FUND REGIONAL PROJECT FOR EXPANSION OF METEOROLOGICAL AND HYDROLOGICAL NETWORKS IN THE AMAZON BASIN

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) That an urgent need exists for basic climatologicaLagrometeorological and hydrological information in the Amazon basin, which is indispensable for the agricultural and industrial development of the Region,

(2) That through the execution of a Special Fund regional project the integrated establishment of the climatological, agrometeorological and hydrological networks could be achieved, as well as other facilities, to obtain the above-mentioned basic information,

INVITES Directors of Meteorological Services of Member countries having territories along the Amazon basin to request from their respective governments a multilateral agreement which would constitute the basis for a formal application of the project to the United Nations Development Programme, prepared in accordance with the regulations established by the UNDP Special Fund.

Res. 22 (IV-RA III) - COMPARISON OF BAROMETERS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOI'ING:

(1) WMO Technical Regulations, paragraphs 3.4.4.6 and 3.4.4.7,

(2) Financial difficulties involved in carrying out barometer comparisons,

(3) That Brazil has a regional standard barometer of Category A and that Argentina and Venezuela have Category B regional standard barometers, RESOLUTION 23 45

(4) That Argentina and Brazil have kindly offered to loan standard barometers to other Members of the Association for comparison purposes,

CONSIDERING that Chile will have a national standard barometer in 1968,

INVITES:

(1) Argentina, Venezuela and Brazil, by 1967, to compare their respective region al standard barometers; and

(2) Ecuador, Chile and Peru to arrange for comparison of their barometers with a regional standard barometer as soon as possible;

URGES Members to establish national standard barometers if they have not already done so.

Res. 23 (IV-RA III) - WORKING GROUP ON SOLAR RADIATION FOR REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) The progress achieved in establishing solar radiation stations in the Region,

(2) The establishment of a regional radiation centre in Argentina for the ~egion,

CONSIDERING the importance of solar radiation studies, especially ~ith application to climatology and agricultural meteorology,

DECIDES:

(1) To set up a Working Group on Solar Radiation for Region III-with the follow ing terms of reference:

(a) To maintain a continuing review of ~egional activities in the field of solar radiation and recommend to the president of the Association any action that could be taken to promote or facilitate these activities;

(b) To advise individual Members (on request) regarding the planning of a network of radiation stations, the proper instruments for observation stations, the collection and statistical analyses of radiation data and the interpretation required for the theoretical and practical applica tion of the results of these analyses;

(c) To study the existing insolation data and determine the regional_ con stants ~ecessary to convert these data to values of total solar radia tion;

(2) To invite the following experts to serve on the working group: Dr. J. Marden dos Santos Brazil Mr. J. _Soriano Uruguay Mr. Julio Hirschmann Chile Mr. Roberto Alvarez Venezuela Dr. Francisco Lacaze Argentina 46 RESOLUTIONS 24, 25

(3) To select, in accordance with Regulation 30 of the General Regulations Dr. J. Marden dos Santos, as chairman of the working group;

(4) To request the working group to submit its report to the president of Re gion III not later than six months prior to the fifth session of the Association.

Res. 24 (IV-RA III) - REGIONAL CODES FOR REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING:

(1) Resolution 13 (EC-XVIII),

(2) Resolution 4 (CRy-I),

CONSIDERING:

(1) That the meteorological codes revised by CSM-IV recommendations as adopted by the Executive Committee come into force on 1 January 1968 and corresponding amendments to the Regional Coding Procedures, as given in Chapter II of Volume B of WMO Publica tion No. 9.TP.~will be necessary,

(2) That there is a need to establish uniform practices in Region III for the reporting of precipitation and that there is a need to exchange six-hourly precipitation data for synoptic and hydrometeorological purposes,

DECIDES:

(1) That Section III, Chapter II, Volume B of WMO Publication No. 9.TP.4 as brought up to date by Supplement No. 27 be amended as shown in the annex* to this resolution;

(2) That these amendments come into force on 1 January 1968.

* See Annex VII.

Res. 25 (IV-RA III) - WORKING GROUP ON METEOROLOGICAL CODES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) That there is a need for the study of regional meteorological codes and iso lated questions in Regional Association III,

(2) That it is desirable to reach the greatest uniformity possible in coding practices in the Region,

DECIDES:

(1) To re-establish the \\/orking Group on Meteorological Codes with the following terms of reference: (a) To study regional codes and keep them under continuous review; RESOLUTION 26 47

(b) To inform the president of needs that may arise for changes in coding practices withiri the Region;

(c) To suggest to the president the changes or extensions desirable in the regional codes to meet the changing requirements of the Region;

(2) To invite the following experts to serve on the group: Mr. Erich Lichtenstein Argentina Mr. Yomar M. Souza Brazil Mr. Hernan Pizarro C. Chile Mr. Rigoberto Rivas Chile Mr. Tomas Palacios Peru Mr. Fausto Moya Ecuador

(3) That Members may nominate additional experts at any time;

(4) To select Mr. Erich Lichtenstein as chairman of the working group in accord ance with Regulation 30 of theWMO General Regulations.

Res. 26 (IV-RA III) - WORKING GROUP ON AGRICULTURAL METEOROLOGY AND CLIMATOLOGY FOR REGION III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING the report of the Working Group on Agricultural Meteorology,

CONSIDERING:

(1) That the application of meteorology and climatology to the development of agricultural resources is of utmost importance to the Members of the Association, and

(2) That at present this application has not yet been fully exploited in the Region,

DECIDES:

(1) To set up a Working Group on Agricultural Meteorology and Climatology for Region III with the following terms of reference:

(a) To collect detailed information on the activities in this field includ ing the aspects of organization and consultation of various services;

(b) To study the subject of agricultural meteorology and its application to increased crop yields and the ecology of various grains;

(c) To prepare, on the basis of Resolution 26 (I-RA III) and the proposals made by the Members, a regional,phenological catalogue and to recommend the necessary standards for the exchange of phenological observations between countries;

(d) To study the recommendations made by the International Meeting on the Problems of Agriculture in the Humid Tropics of Latin America (Lima, May 1966), which are contained in the annex* to this Resolution; 48 RESOLUTION 27

(e) To encourage the establishment of specially instrumented small botanical gardens,' in the various significant ecological regions of South America, similar to those already operating in the Federal Republic of Germany;

(2) To invite the following experts to serve on the working group: Ing. Galo Cisneros Ecuador Ing. Antonio Tubelis Brazil Ing. T. Lacroix Uruguay Mr. Fernando Ramirez Chile Mr. J. Fougerouze French Guiana Mr. J. M. Sanchez Carrillo Venezuela Mr. Jose Manuel Martinoli Argentina One expert to be designated by Peru;

(3) To select, in accordance with Regulation 30 of the General Regulations, Ing. Galo Cisneros as chairman of the working group;

(4) To request the working group to submit its report to the president of the Region not later than six months prior to the fifth session of the Association.

* See Annex VIII.

Res. 27 (IV-RA III) - GROUND RADAR WEATHER OBSERVATIONS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING that progress in developing a ground radar weather observation network has been slow, and

CONSIDERING:

(1) The value of ground radar equipment in determining areas of precipitation, thunderstorm activity, freezing level and cloud tops,

(2) That it is important that data obtained from the above observations be ex changed within the Region,

(3) That it is now possible to obtain quantitative estimates of rainfall amounts from ground radar equipment,

URGES:

(1) Members of the Region to install and maintain ground radar weather equipment for meteorological purposes;

(2) Members who are operating such equipment to exchange the data obtained within the Region. RESOLUTIONS 28, 29 49

Res. 28 (IV-RA III) - INTEGRATION OF METEOROLOGY INTO THE ECONOMIC DEVELOPMENT PROGRAMMES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING:

(1) The influence of weather on the activities related to the development of natural resources, transportation in general, industry, commerce and the rational use of the hydrometeorological energy resources which are potentially available in the South American Continent,

(2) The importance of meteorology in all the aspects concerning the evaluation and better use of the said resources, and

(3) The necessity that the national Meteorological Services of RA III make a regular and continuous exchange of all the studies, technical publications and meteorologi cal research information available to each Service and, particularly, all the meteorological information which is dealing with economic development projects of interest ,to the Region,

INVITES the Directors of the national Meteorological Services of RA III to indi cate to their respective governments the urgent need to integrate all meteorological acti vities on a national level and arrange for full co-operation on a regional basis to ensure the necessary exchange of meteorological information for activation of national and regional development programmes, making full use of the assistance offered by the international organi zations concerned.

Res. 29 (IV-RA III) - REVIEW OF THE RESOLUTIONS AND RECOMMENDATIONS ADOPTED BEFORE THE FOURTH SESSION OF RA III INCLUDING EXECUTIVE COMMITTEE RESOLUTIONS RELATING TO RA III

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING paragraph 3.7.1 (f) of the General Summary of the work of EC-IX,

CONSIDERING:

(1) That a number of resolutions adopted by the Association before its fourth session have been revised and incorporated in resolutions of the fourth session or in the relevant parts of Volumes Band C of WMO Publication No. 9.TP.4,

(2) That some resolutions have become obsolete,

(3) The action taken by the competent bodies of the Organization on the recom mendations adopted by the Association before its fourth session,

DECIDES: /

(1) To keep in force Resolutions 4, 7 and 26 (I-RA III), 5, 18, 31 and 34 (II-RA III), and 8, 9, 10, 11, 12 and 13 (66-RA III), all other resolutions being no longer in force;

(2) Not to keep in force any previous recommendation;

(3) To publish the texts of resolutions still in force in the abridged final re port of the session.* * See Annex IX. 50 RESOLUTION 30

Res. 30 (IV-RA III) - PARTICIPATION AT FIFTH CONGRESS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA~

NOTING the importance of the Fifth World Meteorological Congress' for. the planning of the World Weather Watch,

CONSIDERING that there is a need for all Members of RA III to participate actively in the work of Fifth Congress to ensure full consideration of 'the particular problems that South America is facing,

URGES all Members to make all the necessary arrangements to ensure that they will be represented at Fifth Congress by an adequately staffed delegation headed by the permanent representative. 51

RECOMMENDATIONS ADOPTED BY THE SESSION

Rec. 1 (IV-RA III) - FINANCIAL SU~PQRT' TO THEPRESlDENT OF REGIONAL ASSOCIATION III

THE REGIONAL ASSOCIATION-FOR SOUTH AMER1CA ..

CONSIDERING that there is a need to give financial support to the president of the regional 'association in order t'o permit' efficient and effective execution of his duties,

RECOMMENDS:

(1) That budgetary provision be made for the fifth financial period to provide financial support to the president of Regional Association III;

(2) That this suppor'&be US $10,600 .per annum and'that 'this amount be used for secretarial assistance, cOmrrillnicati'or1; printing and office supplies and travel and per diem for the president of Regional Association III.

Rec. 2 (IV-RA III) - COLLECTION OF SHIPS' WEATHER REPORTS IN THE AREA SOUTH OF 600 s

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING paragraph 5.3.12 of the General Summary of EC-XVIII,

CONSIDERING there is a need to ensure that reports from ships sailing south of 600 s are collected efficiently, and that they are at present available in Region III with delay,

RECOMMENDS:

(1) That for the purpose of the rapid collection and dissemination of ships' weather reports the zone of responsibility of Region III should be extended southwards be tween longitudes 200W and 1200W from latitude 600s to the coastline of the Antarctic Conti nent;

(2) That all Members signatories of the Antarctic Treaty be consulted on this matter prior to its implementation. 52

ANNEX I Annex to Resolution 2 (IV-RA III)

STATIONS AND OBSERVATIONAL PROGRAMMES COMPRISING THE BASIC SYNOPTIC NETWORK IN SOUTH AMERICA

NOTES: 1. All stations listed in this annex should make and disseminate surface synoptic observations at the four main synoptic hours, viz. 0000, 0600, 1200 and 1800 GMT, and at the four intermediate synoptic hours, viz. 0300, 0900, 1500 and 2100 GMT. The carrying out of the observations at the main synoptic hours should be given first priority.

2. All radiowind stations should make and disseminate upper-wind measurements up to 10 mb at 0000, 0600, 1200, and 1800 GMT. The carrying out of the 0000 and 1200 radiowind observations should be given first priority.

3. All radiosonde stations should make and disseminate observations of pressure, temperature and humidity up to 10 mb at 0000 and 1200 GMT.

* * ANNEX I 53

1 2 3 4 Radio- Surface Radiowind sonde station bo 0) 06 09 12 15 18 :2 00 06 1218 00 12

COLOMBIA 80001* San Andres (Isla) x x x x x x x x x x x x x x 009 Santa Marta x x x x x x x x 015 Uribia (approx. 11044'N, x x x x x x x x 72°18'W) 028 Barranquilla/Soledad x x x x x x x x 062 Turbo x x x x x x x x 070 San Marcos x x x x x x x x 074 El Banco x x x x x x x x 089 otu x x x x x x x x 091 Barrancabermeja x x x x x x x x 099 Arauca x x x x x x x x 110 Medellin x x x x x x x x 114 Quibd6 x x x x x x x x 213 El Paso x xx x x x x x 222 Bogota/Eldorado x x x x x x x x x x x x' x x 252 Buenaventura x x x x x x x x 259 Cali/Calipuerto x x x x x x x x 308 Popayan x x x x x x x x 336 Turnaco x x x x x x x x 361 Mitu x x x x x x x x 370 Ipiales x x x x x x x x 378 Tres Esquinas (approx. 00042'N, x x x x x x x x 75°16'W) 398 Leticia x x x x x x x x Miraflores (approx.'Olo24'N, x x x x x x x x 72°06'w) VENEZUELA 80403 Coro x x x x x x x x 405 La Orchila x x x x x x x x 407 Maracaibo x x x x x x x x 410 Barquisimeto x x x x x x x x 413 Maracay - B.A. Sucre x x x x x x x x x x x x x x 415 Caracas/Maiquetia x x x x x x x x 419 Barcelona x x x x x x x x 423 GUiria x x x x x x x x 435 Matur1:n x x x x x x x ;x: 438 Merida x x x x x x x x 444 Ciudad Bollvar x x x x x x x X 447 San Antonio del Tachira x x x x x x x x x x x x x x 450 San Fernando de Apure x x x x x x x x 453 Turneremo x x x x x x x x 456 San Pedro de las Bocas x x x x x x x x (approx. 06°51'N, 62°56'w)

* This station is also included in the 'RA IV basic synoptic network. 54 ANNEX I

1 2

00 0) 06 09 12 15 18 21

VENEZUELA (continued) 80457 Puerto Ayacucho x x x x x x x x 462 Santa Elena de Uairen x x x x x x x x x x x x x x 46) Esmeralda x x x x x x x x 464 San Carlos de Rio Negro x x x x x x x x x x x :ll! x x (approx. 01054'N, 67°06'w)

GUYANA 81002 Atkinson x x x x x x x x x x x x x x 006 Lethem x x x x x x x x 100 Mabaruma x x x x x x x x 110 Enachu x x x x x x x x

SURINAM 81202 Nickerie x x x x x x x x 209 Stoelmanseiland x x x x x x x x 225 Zanderij x x x x x x x x 250 Tafelberg x x x x x x-x x 251 Sipaliwini x x x x x x x x 25) Coeroeni x x x x x x x x

FRENCH GUIANA 81401 Saint-Laurent-du-Maroni x x x x x x x x 405 Cayenne/Rochambea~ x x x' x x x x x x x x x x x 415 Maripasoula x x x x x x x x

BRAZIL 82024 Boa Vista x x x x x x x x 0)0 Amapa (Aeroporto) x x x x x x x x 067 Iauarete x x x x x x x x 098 Macapa (approx. 00002'N, x x x x x x x x 510 0)'W) 106 Uaupes x x x x x x x x 108 Tapurucuara x x x x x x x x 11) Barcelos x x x x x x x x 152 Vila Bittencourt (approx. x x x x x x x x 01026's, 69°25'W) 191 Belem x x x x x x x x 19) Belem/(Aeroporto) Val de Cas x x x x x x 198 Turiagu x x x x x x x x 212 Fonte Boa x x x x x x x x 240 Parintins x x x x x x x x 243 Santarem (Tapertnha) x x x x x x x x 281 Sffo LUiz/(Aeroporto) Trirical x x x x x x x x 288 ParnaIba x x x x x x x x x x x x x x 331 Manaus x x x x x x x x 332 Manaus/ Aeroporto Ponta Pelada x x x x x x ANNEX I 55

1 2 3

00 03 06 09 12 15 18 21 00 06 12 18

BRAZIL (continued) 82353 Altamira x x x x x x x x 392 Sobral x x x x x x x x 397 Fortaleza x x x x x x x x 400 Fernando de Noronha x x x x x x x x x x x x x x 410 Benjamin Constant x x x x x x x x 418 Carauarl x x x x x x x x 425 Coad. x x x x x x x x 533 Manicore (approx. 05°49'S, x x x x x x x x 6P18'w) Maraba (approx. 05°21'S, x x x x x x x x 49°09'W) 564 Imperatriz x x x x x x x x 571 Barra do Corda x x x x x x x x 578 Terezina x x x x x x x x 583 Crateus x x x x x x x x 586 Quixeramobim x x x x x x x x 594 Macau x x x x x x x x 598 Natal x x x x x x x x x x x x x x 610 Eurinep@ x x x x x x x x 640 Jacareacanga (Aeroporto) x x x x x x x x 678 Floriano x x x x x x x x 704 Cruzeiro do Sul x x x x x x x x 723 Labrea x x x x x x x x 741 Alto Tapaj6s x x x x x x x x 765 Carolina x x x x x x x x x x x x x x 785 Joazeiro do Norte x x x x x x x x 807 Tarauaca x x x x x x x x 825 Porto Velho (Aeroporto) x x x x x x x x x x x x x x 861 Concei~ao do Araguaia x x x x x x x x 900 Recife (Curado) x x x x x x x x 915 Rio Branco x x x x x x x x 930 Cachimbo (Aeroporto) x x x x x x x x x x x x x x 975 Born Jesus (approx. 09006's, x x x x x x x x 44°07'W) 979 Remanso x x x x x x x x 984 Petrolina x x x x x x x x 986 Paulo Afonso x x x x x x x x 993 Macei6 (Aeroporto) x x x x x x x x .. S~o Felix do XingU x x x x x x x x (approx. 6°43'S, 51056'W) 83064 Porto Nacional x x x x x x· x x 096 Aracaju x x x x x x x x 208 Vilhena (Aeroporto) x x x x x x x x x x x x x x 220 Rio Xingu (approx. 12°S, x x x x x x x x 53°23'W) 229 Salvador x x x x x x x x x x x x x x ANNEX I

1 2 3 00 03 06 09 12 15 18 21 00 06 12 18

BRAZIL (continued) 83236 Barreiras x x x x x x x x 242 Leng6is x x x x x x x x 262 Utiariti x x x x x x x x 309 Diamantino x x x x x x x x 339 Caetite x x x x x x x x 348 Ilheus x x x x x x x x 361 Cuiaba x x x x x x x x 365 Sangradouro x x x x x x x x 377 Brasilia (Cruzeiro) x x x x x x x x 378 Brasilia (Aeroporto) x x x x x x 386 Januaria x x x x x x x x 393 Pedra Azul (approx. 16o s, x x x x x x x x 41017 'W) 405 Caceres x x x x x x x x 470 Rio Verde (approx. 17°48's, x x x x x x x x 500 56 'w) 483 Pirap6ra x x x x x x x x 492 Te6filo Otoni x x x x x x x x 497 Caravelas x x x x x x x x 526 CataHlo x x x x x x x x 583 Bel0 Horizonte/Aeroporto x x x x x x x x Pampulha 592 Caratinga x x x x x x x x 611 Campo Grande x x x x x x x x 612 Campo Grande (Aeroporto) x x x x x x 618 Tres LagBas x x x x x x x x 630 Franca x x x x x x x x 649 vit6ria /Aeroporto Goiabeiras x x x x x x x x 650 Trindade (Ilha) x x x x x x x x x x x x x x 687 Lavras x x x x x x x x 692 Juiz de Fora x x x x x x x x 698 Campos x x x x x x x x 702 Ponta Por"a x x x x x x x x 721 Campinas/ Aeroporto Vir a Copos x x x x x x x x 722 Bauru x x x x x x x x 738 Rezende x x x x x x x x 743 Rlo de Janeiro x x x x x x x x 746 Rlo de Janeiro /Aeroporto x x x x x x Galeao 747 Cabo Frio x x x x x x x x 766 Londrina x x x x x x x x 780 S~O Paulo/ Aeroporto Congonhas x x x x x x x x 782 Santos x x x x x x x x 827 Foz do Iguagu (Aeroporto) x x x x x x x x 834 Guarapuava x x x x x x x x 840 Curitiba/ Aeroporto Afonso Pena x x x x x x 842 Curitiba x x x x x x x x ANNEX I 57

1 2

00 03 06 09 12 15 18 21 1-0~0-06-:~2-1-8-' 100 : I I BRAZIL (continued) 83844 Paranagua x x x x x x x x 881 Iral x x x x x x x x 887 Campos Novos x x x x x x x x 899 . Florian6polis x x x x x x x x 907 S~o Luiz Gonzaga x x x x x x x x 914 Passo Fundo x x x x x x x x 927 Uruguaiana x x x x x x x x 936 Santa Marla x x x x x x x x 948 Torres x x x x x x x x 964 Encruzilhada do SuI x x x x x x x x 967 Porto Alegre x x x x x x x x 971 Porto Alegre I Aeroporto x x x x x x Salgado Filho 980 Bage x x x x x x x x 995 Rio Grande x x x x x x x x 997 Santa vit6ria do Palmar x x x x x x x x

ECUADOR 84008 San Crist6bal (Galapagos) x x x x x x x x x x x x x x 027 Esmeraldas x x· x x x x x x 045 Quito/Mariscal Sucre x x x x x x x x 092 Tiputini x x x x x x x x HI Salinas x x x x x x x x 120 Portoviejo (approx. 01007'S, x x x x x x x x 80028'w) 129 Guayaquil/Sim6n Bolivar x x x x x x x x x x x x x x 139 Cuenca/Mariscal Lamar x x x x x x x x 153 Pastaza x x x x x x x x 235 Catamayo / La Toma x x x x x x x x

PERU 84377 Iquitos x x x x x x x x x x x x x x 390 Talara x x x x x x x x 401 Piura x x x x x x x x 425 Yurimaguas x x x x x x x x 444 Chachapoyas x x x x x x x x 452 Chiclayo x x x x x x x x 501 Trujillo x x x x x x x x 515 Pucallpa x x x x x x x x 534 Tingo Maria x x x x x x x x 605 Sepahua x x x x x x x x 628 Lima-Callao (Aeropuerto Inter- x x x x x x x x x x x x x x nacional Jorge Chavez) 658 Puerto Maldonado x x x x x x x ·x 686 Cuzc.o x x x x x x x x 691 Pisco x x x x x x x x 58 ANNEX I

1 1-0-0-0-3-0-6-09-2_1-2-1-5-18-2-,1 l00 ~3'2 1~ /00 4,2 /

PERU (continued) 84721 San Juan x x x x x x x x 735 Juliaca x x x x x x x x 752 Arequipa x x x x x x x x 782 Tacna x x x x x x x x

BOLIVIA 85043 Riberalta x x x x x x x x 104 San Joaquin x x x x x x x x 141 Rurrenabaque x x x x x x x x 154 Trinidad x x x x x x x x 196 Concepci6n x x x x x x x x 201 La Paz/El Alto x x x x x x x x 203 Ovejuyo x x x x x x x x x x x x x x 205 Todos Santos x x x x x x x x 223 Cochabamba x x x x x x x x 242 Oruro x x x x x x x x 245 Santa Cruz x x x x x x x x x x x x x x 247 San Jose x x x x x x x x 289 Puerto Suarez x x x x x x x x x x x x x x 293 Potosi x x x x x x x x 315 Camiri x X x x x x x x 322 Uyuni x x x x x x x x 365 Yacuiba x x x x x x x x

CHILE 85406 Arica/Chacalluta x x x x x x x x 418 Iquique/Los C6ndores x x x x x x x x 442 Antofagasta/Cerro Moreno x x x x x x x x x x x x x x 460 Chanaral x x x x x x x x 469 Isla de Pascua/Mataveri x x x x x x x x x x x x x x 470 Copiap6 x x x x x x x x 486 Vallenar x x x x x x x x 488 La Serena x x x x x x x x 543 Quintero x x x x x x x x x x x x x x 574 Santiago/Pudahuel (approx. x x x x x x x x 33°26's, 700 47'W) 585 Juan Fernandez x x x x x x x x x x x x x x 629 Curic6 x x x x x x x x 640 Constituci6n x x x x x x x x 683 Concepci6n x x x x x x x x 732 Isla Mocha x x x x x x x x 743 Temuco/Maquehue x x x x x x x x 767 Valdivia/Pichoy x x x x x x x x 799 Puerto Montt/El Tepual x x x x x x x x 801 Puerto Montt/La Chamiza x x x x x x 834 Isla Guafo x x x x x x x x ANNEX I 59

1 2 I 00 03 06 09 12 15 18 21 CHILE (continued) 85862 Puerto Ays{m x x-x x x x x x 874 Balmaceda x x x x x x x x 889 Cabo Raper x x x x x x x x 907 Puerto Ed€m x x x x x x x x 915 Cerro Guido x x x x x x x x 930 Islotes Evangelistas x-x x x x x x x 934 Chabunco/Punta Arenas x x x x x x x x x x x x -x x 967 Puerto Williams/Navarino x x x x x x x x 972 Diego Ramirez x x x x x x x x

PARAGUAY 86017 Base Aerea Nueva Asun0i6n x x x x x x x x 033 Bahia Negra x x x x x x x x 062 Pedro P. pella x x x x x x x x 068 Mariscal Estigarribia x x x x x x x x 086 Puerto Casado x x x x x x x x 134 Concepci6n x x x x x x x x 218 Asunci6n/Aeropuerto Inter x x- x x x x x x nacional "Presidente Stroessner,r 233 Villarrica x x x x x x x x 260 San Juan Bautista (Misiones) x x x x x x x x 297 Encarnaci6n x x x x x x x x

URUGUAY 86350 Rivera x x x x x x x x 360 Salto x x x x x x x x 460 Paso do los Toros x x x x x x x x 500 Treinta y Tres x x x x x x x x 560 Colonia x x x x x x x x 580 Montevideo/Carrasco x x x x x x x x 595 Punta del Este x x x x x x x x

ARGENTINA 87007 La Quiaca x x x x x x x x 016 Oran x x x x x x x x 032 La Casualidad x x x x x x x x 047 Salta Aero x x x x x x x x x x x x x x 065 Rivadavia x x x x x x x x 071 Monte Quemado x x x x x x x x 078 Las Lomi tas x x x x x x x x 120 Tucuman Aero x x x x x x x x 149 Presidencia Roque Saenz Pena Aero x x x x x x x x 155 Resistencia Aeropuerto Inter- x x x x x x x x x x x x x x nacional 161 Formosa (approx. 26°07'S, x x x x x x x x 58°14'w) 60 ANNEX I

1 100 a;3 18 f 1-0~0-0-3-0-6-09-2_1-2-1-5-18-2-1-t '2 ~ ARGENTINA (continued) 87211 Tinogasta x x X'x x x x x 217 La Rioja x x x x x x x x 220 Catamarca x x x x x x x x 244 Villa Maria del Rio Seco x x x x x x x x 270 Reconquista x x x x x x x x 281 Mercedes x x x x x x x x 305 Jachal x x x x x x x x 312 San Juan x x x x x x x x 322 Chepes x x x x x x x x 344 C6rdoba Aero x x x x x x x x x x x x x x 374 Parana Aero x x x x x x x x 393 Monte Cas eros Aero x x x x x x x x 395 Concordia Aero x x x x x x x x 400 Cristo Redentor x x x x x x x x 418 Mendoza (El Plumerillo) x x x x x x x x 436 San Luis x x x x x x x x 453 Rio Cuarto x x x x x x x x 467 Marcos Juarez x x x x x x x x 480 Rosario x x x x x x x x 497 Gualeguaychu Aero x x x x x x x x 506 MalargUe x x x x x x x x 520 Uni6n (San Luis) x x x x x x x x 534 Laboulaye x x x x x x x x 544 Pahuaj6 Aero x x x x x x x x 548 JUllin Aero x x x x x x x x 563 Las Flores x x x x x x x x 576 Ezeiza x x x x x x x x x x x x x x 596 Punta del Indio x x x x x x x x 623 Santa Rosa x x x x x x x x x x x x x x 645 Tandil x x x x x x x x 673 Puelches x x x x x x x x 679 PigUe x x x x x x x x 688 Tres Arroyos x x x x x x x x 692 Mar del Plata Aero x x x x x x x x 715 Neuquen x x x x x x x x x x x x x x 736 RIO Colorado x x x x x x x x 748 Base Aeronaval Comandante Espora x x x x x x x x x x x x x x 763 Catedral 2000 x x x x x x x x 774 Maquinchao x x x x x x x x 784 San Antonio Oeste x x x x x x x x 790 Patagones x x x x x x x x 803 Esquel x x x x x x x x 807 Gobernador Costa x x x x x x x x 828 Trelew x x x x x x x x 860 Comodoro Rivadavia x x x x x x x x x x x x x x 871 Camarones (approx. 44°46's, x x x x x x x x 65°45'W) ANNEX I 61

1 2 3 IpO 03 06

ISLANDS 88890 Stanley x x x x x -x x x x x x x x x 903 Grytviken x x x x x x x x x x x x x x

OCEAN STATIONS ( 5°N, 37°W) x x x x x x x x x x x x x x (400 s, 35°W) x x x x x x x x x x x x x x (500 S, 95°W) x x x x x x x x x x x x x x (600 s, ll5°W) x x x x x x x x x x x x x x 62

ANNEX II Annex to Resolution 2 (IV-RA III)

PLANS FOR REGIONAL BASIC SYNOPl'tc NETWORK. IN SOUTH AMERICA

1. The target plan This shall consist of all the stations and observational programmes listed in Annex 1 to Resolution 2 (IV-RA III). They are considered to be the minimum long-term require ments throughout the Region to permit Members to fulfil their responsibilities in the applica tion of meteorology. The plan does not take into consideration any additional stations which Members may have already established or may have to establish .exclusively for national pur poses.

II. The two-year plan (1967-1968) The minimum degree of implementation of the target plan required in each country by 31 December 1968 shall be as follows:

Surface w R 00 03 06 09 12 15 18 21 00 06 12 18 00 12

% implementation 80 50 60 50 80 50 80 50 70 50 70 50 70 70

III. The four-year plan (1967-1970) Tlae minimum degree of implementation of the target plan required in each country by 31 December 1970 shall be as follows: Surface w R 06 03 06 09 12 15 18 21 06 0612 18 06 12 %implementation· 90 75 80 75 90 75 90 75 90 70 90 70 90 90 ANN E X III Annex to Resolution 2 (IV-RA III)

PROCEDURES FOR MINOR CHANGES IN THE REGIONAL BASIC SYNOPTIC NETWORK

The Association recognizes that certain minor changes in the regional basic. synop tic network, which do not affect the requirements of the Region as a whole, are inevitable from time to time. To provide a simple and rapid means of effecting such changes, the Asso ciation decide~ at its fourth session, that the procedure given below should be followed:

(a) The president of the Association at the request of the Member concerned, in consultation with the Secretary-General, shall approve minor changes without a formal consultation of the Members of the Region, it being understood that any change of substance, i.e. one affecting the density of the network within the Region, or proposing a change in observational hours, would still require the formal agreement of Members through the adoption of a resolution by post al ballot;

(b) The Secretary-General shall notify all Members by circular letter of changes agreed with the president of the Association;

(c) The network report published after each session of the Association shall contain a full list of the stations and observational programmes included in the regional basic synoptic network;

(d) This list shall be kept up to date by means of the annual supplements issued to these reports. 64

ANNEX IV Annex to Resolution 4 (IV-RA III)

VOLUME C, CHAPl'ER II, REGION III - SOUTH AMERICA INTRODUCTION

NOTE: For the sake of completeness it is on occasion necessary to refer in this Introduc- tion to matters of a non-telecommunication nature which are the subject of other relevant Congress, Executive Committee or Regional Association decisions. Such material is kept to an essential minimum and it should not be considered as deriving its status from the present In troduction which deals with the Organization of meteorological telecommunications and the re levant telecommunication procedures and practices.

General Basic meteorological information should be collected, exchanged and distributed within Region III and with neighbouring regions in accordance with the regional telecommunica tion plan set forth below.

The three major components of the regional telecommunication plan are: (i) A system of radio broadcasts for the distribution of coded meteorological data; (ii) Point-to-point links for the collection. and distribution of basic meteorolo gical information, which should be the preferred means of exchange; (iii) Facsimile broadcasts.

1. RADIQ BROADCASTS IN THE REGION

1.1 Regional broadcasts Brasilia is the regional broadcast centre in Region III.

1.1.1 99~!~~!~_9!_:~~~9~~~_E:9~~~~~~~ The regional broadcasts should contain a selection of data of South America and adjacent areas.

1.1.2 The delineation of the mlnlmum area in which interference-free reception of regional broadcasts should be ensured should be throughout the whole of South America and the southern part of the Caribbean area.

1.2 Subregional broadcasts The designated subregional broadcast centres in the Region and the areas of respon sibility from which data should be collected are as follows: ANNEX IV 65

Subregional broadcast Area of responsibility from centre which data should be included in the broadcast

BUENOS AIRES Argentina, Bolivia, Chile, (Argentina) Paraguay, Peru, Uruguay, islands in the South Atlantic, Antarctic (partly), ships

MARACAY Brazil (north of 100S), ships; (Venezuela) Guyana, .Colombia, Ecuador, French Guiana, Peru, Surinam, Venezuela, ships

BRASILIA Brazil, ships (Brazil)

1.2.2 Contents of subregional broadcasts 1.2.2.1 The subregional broadcasts should contain at least surface and upper-air reports for all stations included in the basic regional networks for its area of responsibility (see definition of basic regional network in Resolution 33 (EC-XIV)). 1.2.2.2 All reports received from mobile ship stations, either directly or via collecting centres from territorial transmissions made within the area of responsibility allocated to the subregional centre, should be included in its broadcasts or transmissions (see Recommenda tion 11 (CMM-IV)). 1.2.2.3 Additional observational and processed data should be included to meet the requirements of Members who rely on these broadcasts.

1.2·3 Area of reception ------~ The delineation of the minimum areas in which interference-free reception of sub regional broadcasts shouid be ensured are:

Centre Minimum area

BUENOS AIRES Throughout Region III and in the Antarctic Peninsula and in adjacent sea areas MARA CAY Throughout Region III and in the southern part of Region IV and in adjacent sea areas BRASILIA Throughout Region III and in the southern part of Region IV and in adjacent sea areas 66 ANNEX IV

1.3 Territorial broadcasts/transmissions 1.3·1 Territorial broadcasts/transmissions shall be established in every country of the Region. 1.3.2 In the case of the smaller countries, data from a counyry may be included by bilateral arrangements in the territorial broadcast of another country.

1.4 Contents of broadcasts 1.4.1 Reports ,from all stations forming part of the basic regional network should be included in territorial broadcasts or transmissions.

2. POINT-TO-POINT TRANSMISSIONS,

2.1 A system of point-to-point links should be the preferred means for the transmission of meteorological information within Region III and with other Regions.

2.2 The principles for the planning of an international system of point-to-point connexions are, the foll~wing:

Principle No.1: The regular exchange of routine basic meteorological information as specified by the Regional Association (i.e. stated regional requirements for the exchange of basi9 meteorologicai information) shall be accomplished through, the medium of a special meteorological telecommunications network. The exchange of routine basic meteorological in-' formation should be arranged to permit handling of non.... routine basic meteorological informa':' tion (e.g. warnings), where this can be accomplished within the limits of the ,acceptable tran sit time-criteria.

Principle No.2: The telecommunications network shall be engineered and arranged ,to s~tisfy the transit time criteria established by CSM and Regional Association III in re 'spect ot the various categories of basic meteorological data.

Principle No.3: The telecommunications network shall be arranged to provide for the collection of basic meteorological information at the designated collecting centres (com bined territorial, subregional, regional, hemispheric) and for prompt dissemination of such information to Members concerned by radio broadcasts or preferably by point-to-point transmis sions. For the purpose of collecting the basic meteorological information the Region will be divided into three areas, each of which will be served by a principal collecting centre assist ed by an adequate number of subcollecting centres.

,Principle No.4: ,The telecommunications network shall be planned to provide maxi mum flexibility to cope with future changes in meteorological requirements.

Note: Flexibility is essential' for accommodating future changes in meteorological requirements such as: (a) Changes in contents of transmission (b) Changes in codes ,( c) Changes in transit time criteria (d) Changes in presentation of processed data.

Principle No.5: The technical development of the regional telecommunication net work should have as its ultimate "objective a fully inte'grated'telecommunication system employ ing techniques (preferably automatic s~lection and transmission equipment) best suited to meet the needs of Members in the most economical manner. Wherever feasible, point-to-point links ANNEX IV

The diagram shown below shows. the interconnexions envisaged by the Meteorological Telecommunication Plan for South America.

COLLECTION, EXCHANGE AND DISSEMINATION OF BASIC METEOROLOGICAL INFORMATION IN SOUTH

AMERICA BY DESIGNATED CENTRES

1--- - ~ ---I • Belem :

,------

I Recife

1-- ---"I, ;Rio de Janeir"! 1------,

1------1 I--+'t>=-----""'

Legend:

Regional and subregional broadcast centre

National broadcast centre fC::::1! Subregional broadcast centre .~------~ . .!.. ___ ..... _ J. Collecting centre 68 ANNEX IV should be used for the collection and exchange of basic meteorological information between centres concerned. The dissemination of processed meteorolQgical information such as analyses, forecasts and nephanalyses should preferably be by facsimile.

Principle No.6: When point-to-point circuits are employed, the network shall consist of an appropriate number of individual circuits to form an integrated network by means of relay facilities between circuits. Radio broadcasts for the dissemination of basic meteo rological information should b~ continued if necessary.

Principle No.7: The regional telecommunications network should be arranged and engineered so as to provide optimum operational and technical reliability.

Principle No.8: A standard transmission procedure shall be followed throughout the entire telecommunication network.

Principle No.9: The implementation of the regional telecommunications network should be co-ordinated by the president of Regional Association III through the RA III Working Group on Meteorological Telecommunications and in close collaboration with the Secretary General.

2.3 On the basis of the above planning principles the following Meteorological Telecom- munication Plan for South America was adopted.

2.3.1 Organization: (a) The three designated subregional centres are: (i) BUenos Aires (ii) Maracay (iii) Brasilia The above three centres should be interconnected by a duplex RTT and facsimile channel. In cases where Meteorological Services use their own radio equipment, the multiple channel single side~band (SSB) transmission technique should be used.

(b) Territorial centres (or centres with similar functions) and the associated subregional centre should be connected preferably by RTT and facsimile channels as follows: (i) Buenos Aires - Asunci6n La Paz Lima Santiago Montevideo-Port Stanley (ii) Maracay - Bogota Caye~ne (via Paramaribo) Georgetown (via Paramaribo) Guayaquil* Lima Paramaribo (iii) Brasilia - Belem Recife Rio de Janeiro National network Porto Alegre Cuiaba * For an interim period, the traffic originating in Guayaquil should be routed via Bogota. ANNEX IV 69

2·3.2 ~P~:~!~~~-P:~~!~~~~-~!-!~~-~~!~~:~~~~~~~~-~~~~~~~~~~~~!~~~_~~~~_!~:_~~~!~_~~~:~~~

To ensure adequate operation, the following~ules should be adhered to:

Rule 1 The territorial centres (or centres with similar functions) and the corresponding subregional centre should preferably be linked by teleprinter and facsimile channels. Normal ly these links will be simplex and, where radio-electric methods are employed, consideration should be given to the use of the same frequency and a pre-established programme of consecu tive transmissions. Nevertheless, where circumstances requir~ these links may be duplex.

Rule 2 The links effected by radio-electric methods shall use powers which do not exceed the values required to ensure the desired ranges, preferably using directional antennae in both transmission and reception.

Rule 3 Meteorological stations, and any other unit supplying basic meteorological infor mation, which do not have a satisfactory means of communication with the collecting sub-cen tres must be equipped with low-power single side-band (SSE) radio-telephone systems. In ad dition, when circumstances permit, frequencies above 30 MC/s should be used.

Rule 4- When radio-electric methods are used the set of frequencies to be employed, allow ing for the distances to be covered, the time of day, the season of the year, etc., must be as limited as possible, taking into account the maximum possible sharing of single frequencies between various stations'.

Rule 5 Normally,when.using radio-electric methods of communication in duplex, the use of automatic error detection and correction systems is recommended.

2.3.3

2.3.3.1 Members should take the necessary measures to ensure that the telecommunication links which they establish be directed towards the implementation of the Plan set forth in paragraph 2.3.1 above. 2.3.3.2 The deadline for the implementation of the Plan is 31 December 1969. 2.3.3.3 When implementing the RA III Regional Telecommunication Plan, if no point-to-point circuits of the public telecommunication system can be rented, the possibility of obtaining exclusive channels for the exchange of baqic meteorological information by multiplexing exist ing AFTN radio circuits should be explored in accordance with Recommendation 53 (CSM-III) adopted by Resolution 33 (EC-XIV). By decision of EC-XIV such arrangements are left for na tional and bilateral consideration, and this conclusion has been supported by Recommenda tion 9/6 - Use of AFTN facilities for providing exclusive channels for basic meteorological information - Limited ICAO South American/South Atlantic Regional Air Navigation Meeting, Lima, November/December 1961. 70 ANNEX IV

3. FACSIMILE TRANSMISSIONS

3·1 The following centres are designated as facsimile broadcasting centres in Re- gion III: (1) Brasilia (2) Maracay (3) Buenos Aires

3.2 Each centre must be capable of: (i) Broadcasting the analyses and prognostic charts prepared by the associated master analysis (or submaster analysis) centre for reception at least in the areas of responsibility of the associated analysis centres and by other facsimile centres of the Region; (ii) Re-broadcasting a selection of charts covering the whole southern hemisphere or the whole South American continent, which it receives from other trans mitting centres, if required.

3.3 The meteorological- cb,arts to be transmitted will be decided by the Association in the light of the requirements of its Members.

3.4 The centres designated in paragraph 3.1 above are required to be able to receive the transmissions of the other regional facsimile centres; these centres should therefore - preferably pe interconnected by a duplex poin~-to-point facsimile ci-rcuit.

3.5 '('he facsimile transmissions of the centres listed in paragraph 3.1 above should be engineered (power of the transmitter and selection of radio frequencies) so as to ensure interference-free reception in the area assigned to each of the other transmitting facsimile centres.

3.6- Consideration may be given to the utilization of the corrman radio facilities for facsimile and radio teleprinter broadcasts on a time and frequency sharing basis, as indicat ed in Recommendation 37 (CSM-II).

4. RESPONSIBILITIES OF TRANSMISSIONS OF ANALYSES AND PROGNOSES

4.1 The surface and upper-air analyses prepared by master analysis centres (or sub- master analysis centre) of the Region shall be included in their respective subregional and facsimile broadcasts or transmissions. The master analysis centres for Region III and their responsibilities as decided by Resolution 15 (II-RA III) are:

Master analysis or sub-master Area covered by the analysis analysis centre transmitted

BUENOS AIRES Area south of 20° south between 15° west and 125° west ANNEX IV 71

BRASILIA Area bounded by latitude 15° north, longitude 125° west, latitude 35° south, longitude 15° west up to 5° north to 30° west, longitude 30° west up to 15° north

MARACAY Area allocated to Brasilia between (sub-master analysis centre) latitude 15° north and 10° south

4.2 Surface analyses for 0000 and 1200 GMT should be transmitted not later than 6 hours after the reference standard time of observation.

4.3 Upper-air analyses for the 700, 500 and 300 mb surface for 0000 and 1200 GMT should be transmitted not later than 8 hours after the reference standard time of observa tion.

5. EXCHANGE OF AIRCRAFT WEATHER REPORTS FOR SYNOPTIC PURPOSES

5.1 The subregional broadcast centres Buenos Aires, Maracay and Brasilia are desig- natedtobe the regional collecting centres for the collection and the dissemination of air craft weather reports to be used for synoptic purposes.

5.2 The aircraft weather reports should be transmitted by collecting centres to the appropriate regional collecting centres on the AFTN channels or other point-to-point connex ions in accordance with the provisions of Table 1. Normally AFTN or other point-to-point circuits should be used, but if this is not practicable, aircrl;l.ft reports should be included in territorial broadcasts.

5.3 Members responsible for the operation of the collecting and dissemination centres and for regional collecting centres should make the necessary telecommunication arrangements to ensure the prompt receipt of all aircraft reports at regional collecting centres.

5.4 The president of Regional Association III is invited to take the necessary steps to obtain from Members responsible for the operation of the regional collecting centres in formation on the difficulties·they encounter in receiving aircraft weather reports from col lecting centres designated by ICAO in the zone for which they are responsible. He is also requested to take any remedial action found necessary.

5.5 Members operating regional collecting centres/subregional broadcast centres are invited to include all the aircraft weather reports that they receive in their respective broadcasts or transmissions.

5.6 The dissemination of consolidated bulletins shall be made at intervals not greater than three hours by the responsible subregional broadcast centre.

5·7 Aircraft weather reports which are more than twelve hours old should not be included in the consolidated bulletins. 72 ANNEX IV

TABIE 1

Subregional collection Collecting centres from which aircraft and disseminating centres weather reports (AIREPs) will be received for consolidated bulletins (designated by WMO) (designated by ICAO)

BUENOS AIRES Antofagasta, Asunci6n, La Paz, C6rdoba, Resistencia, Commodoro Rivadavia, Lima, Mendoza, Montevideo, Puerto Montt, Punta Arenas, Santiago.

BRASILIA Belem, Campo Grande, Manaus, Porto Alegre, Recife, Rio de Janeiro, Sao Paulo.

MARACAY Bogota, Caracas, Cayenne, Georgetown, Guayaquil, Paramaribo, Lima.

5.8 Members making meteorological reconnaissance flights should disseminate the resulting observations· within the Region as soon as possible, even in cases where such flights are not made according to a regular programme. For this purpose appropriate codes should be used.

6. DISSEMINATION OF NORTHERN HEMISPHERE AND SOUTHERN HEMISPHERE DATA WI'J.1HIN REGION III

6.1 All surface and upper-air synoptic data from the northern and the southern hemi- spheres required by Members of Regional Association III should be disseminated within the Region, through the Brasilia Centre which has been designated as one of the southern hemi sphere exchange centres (SHEC) and which is also responsible for assuring the exchange of data with the corresponding northern hemisphere exchange centre (NHEC). The provisions of this paragraph should be impleme"nted in the first half of 1967. "

7· COLIECTION AND DIS'J'RIBUTION OF SHIPS I WEATHER REPORTS

7.1 Weather reports from ships should be included in territorial, subregion~l and" regional broadcasts and transmissions, in the code form in which they are received at the respective centre.

7.2 In the case of reports received from ships fitted" only with radio-telephony, the reports should be edited and coded before inclusion in the territorial, subregional and re gional broadcasts or transmissions.

8. TRANSMISSION OF METEOROLOGICAL REPORTS

8.1 Surface reports (i) The groups to be transmitted in surface reports from laDd stations should be those specified in WMO Publication No.9, Volume B, Chapter II - Region III. ANNEX IV 73

(ii) Regional and subregional broadcasts should transmit surface reports without editing, as they are received from territorial centres.

8.2 Upper-air information

8.2.1 Dissemination of PILOT, PILOT SHIP, TEMP and TEMP SHIP reports should be included in the broadcasts as follows:

(i) Parts A and B are transmitted together;

(ii) Parts A, B, C and D, when available, .are included in subregional broadcasts;

(iii) Parts A and C are included in regional broadcasts and Parts Band D may be included if required by neighbouring regions.

8.2.2 Every effo~t should be made to reduce the interval between the actual time and the filing time of Part A and Part B of the reports. Members are urged to ensure that the filing time for the reports is not later than two hours after the actual time of observation and the transmitting time as close as possible after the filing time.

NOTE: The filing time is the time at which the report is delivered to the communicator.

9. TRANSMISSION OF CLIMAT REPORTS Surface CLIMAT reports (FM 71 and FM 72.B) are transmitted by the third day of the month and CLIMAT TEMP reports (FM 75.C and FM 76.C) by the fourth day of the month following the month for which the data are compiled. If the third, fourth or fifth day falls on a Saturday, Sunday or holiday, the reports are transmitted on the next working day.

10. DISTRIBUTION OF METEOROLOGICAL INFORMATION OBTAINED BY ARTIFICIAL SATELLITE

All nephanalysis data concerning the whole Region, part of it or neighbouring areas shall be included in regional and subregional broadcasts and transmissions of the Region.

11. TELECOMMUNICATION PROCEDURES

11.1 Territorial broadcasts/Transmissions (i) Surface synoptic data should be transmitted as early as possible and not later than 60 minutes after the standard hour of observation to which the report refers.

(ii) Upper-air data should be transmitted as early as possible and not later than 120 minutes after the standard hour of observation to which the report refers.

11.2 Subregional and regional broadcasts Subregional and regional broadcasts should start immediately after receipt of the territorial or subregional data.

12. CONVERSION OF TERRITORIAL BROADCASTS INTO Fl MODE OF TRANSMISSION (RTT) The conversion of territorial broadcasts into Fl mode of transmission should be actively pursued by Members in particular if a larger amount of data is to be transmitted, and should be completed as soon as possible and not later than the end of 1969. ANNEX IV

13· CONVERSION OF REGIONAL AND SUBREGIONAL BROADCASTS INTO Fl MODE OF TRANSMISSION

All regional and subregional broadcasts should be converted to Fl mode of emission (RTT) as soon as possible. Al (Morse) broadcasts could-be discontinued if reliable reception of the RTT regional and subregionai broadcasts of the same station is ensured.

14. RECEPTION OF RTT BROADCASTS

Members are urged to install as soon as possible, and not later than 1 December 1967,-RTT receiving sets so as-to be able to receive basic meteorological information by RTT from regional and subregional broadcasts.

15. INSTALLATION OF RADIO FACSIMILE FACILITIES As a matter of urgency, radio facsimile receiving facilities shall be installed wherever required. 75

ANNEX V Annex to Resolution 7 Crv-RA III)

A BROAD OUTLINE OF THE REGIONAL TELECavIMUNICATION PLAN FOR REG ION III FOR THE WWW JMPLEMENTATION PERIOD 1968 - 1971

1. GENERAL

1.1 The growing need Qt Members of the Association for rapid and reliable reception of a large amount of various types of meteorological information from allover South America, from adjacent ocean areas and other Regions calls for the establishment of a regional tele communication-network that will satisfy these requirements. This network would have to be linked to and co-ordinated with the World Weather Watch Global Telecommunication System. Therefore, the regional telecommunication network will have to cope with the WWW require ments, and comply with the organizational and engineering principles adopted for the WOJ:'ld Weather Watch planning by the Executive Committee.

1.2 The regional telecommunications network is aimed at ensuring rapid and reliable collection, exchange and distribution of meteorological information in such a way as to satisfy, as far as possible, the needs of Members of WMO and in particular of Members of RA III. It should be based on up-to-date technique,

2. TELECOMMUNICATION FUNCTIONS OF NATIONAL METEOROLOGICAL CENTRES

The telecommunication functions of national meteorological centres (NMCs) or centres with similar functions, the location and meteorological functions of which are a matter for decision by the Meteorological Services concerned, shOUld comprise the follow ing:

(a) Collection of observational data originating within their territory, or received by national meteorological centres situated in the territory from aircraft and ships, within 15 minutes of the observing station filing time-;-"-

(b) Transmission of the colleQted information to the appropriate RMC or RTH)

*NOTE: Definition of the observing station's filing time: (see page 79). 76 ANNEX V

3· LOCATION OF REGIONAL TELECOMMUNICATION HUBS

3·1 The location of regional telecommunication hubs should take account of the following considerations:

(a) The delineation of the zones of responsibility of RTHs should be based on the requirements of Members of the Association for reception of ob servational and processed data. In general, these zones should group together Members with similar requirements;

(b) The designated centre should have the economic and technical capabilities for establishing and operating reliable telecommunication circuits as required by this plan;

(d) The designation of centres should be based on existing facilities.

NOTE: From the point of view of telecommunication functions, the locations of RMCs should be guided by the same considerations as above. Hence, whenever hereafter the expression "RTH" is used, it should be inter preted as referring also to RMCs in so far as telecommunication func tions of such centres are concerned.

3.2 In application of the above principle and in accordance with the request of the Executive Committee, the following RTHs were designated:

Brasilia Buenos Aires Maracay

4. FUNCTIONS OF RTHs

4.1- In conformity with paragraph 5.1.25 of the General Summary of the work of EC-XVII, RTHs in Region III must be capable of performing the following functions if reqU:ired:

(i) Alpha-numeric traffic (observations, bulletins, etc.)

1. The collection of traffic from within the Region, the pre-processing (meteorological checking) of the data if required, editing (forming bulletins, etc.), and transmission of the traffic on the high-speed main trunk.

2. The relay of incoming trunk traffic without speed conversion to those NMCs so requiring.

3. The conversion of incoming trunk traffic from high speed to low speed, and the selective dissemination of this traffic within the Region, as agreed by the Members within the Region. ANNEX V 77

(ii) Facsimile traffic

1. The reception of facsimile transmissions from world meteorological and other centres, and the dissemination of these products within the Region as agreed by the Members within the Region.

2. The relay onto the main trunk of any facsimile products created within the Region, as may be required for inter-regional exchange.

(iii) Grid-point (computer_to-computer)traffic

1. The reception of products in grid-point form from the world meteorolo gical and other centres, and the reconstitution of these products into facsimile or other suitable form for dissemination within the Region, as agreed by the Members within the Region.

2. The transmission on the main trunk of any grid-point products created within the Region, as may be required for inter-regional exunange.

(iv) General functions

1. The automatic detection of errors in incoming ~ransmission on the main trunk and the automatic request to the sender for retransmission.

2. ·Priority handling of urgent messages (e.g. storm alerts) ·lnaccordarice with procedures established and agreed upon by Members.

3. Dissemination by the RTHs into their Regions by radio broadcast or land line transmissions at both low and high speeds appropriate to the receiv ing capabilities o·f regional and national centres.

4.2 Specific functions of RTHs

In accordance with the broad guidelines given in paragraph 4.1 above, RTHs will have the following duties:

(a) Collection of observational and processed meteorological information within their zone of responsibiiity;

(b) Exchange of meteorological information with WMC~ RMCs, RTHs and NMCs as required;

(c) Distribution wi thin their _zone of responsibi1:i.ty. on poi~t-t_o-point networks and by radio broadcasts of the meteorological information from .its own zone of responsibility and retransmission of data received from WMCsor other RMCs or RTHs;

(d) Other information. A plan showing the above-mentioned zones of responsibility and the networks follows: ANNEX V

Figure 1

Location Zone of responsibility for Responsible for inclusion Minimum area the collection of observa of observational data for which tional data from appropriate from the following terri reception of national meteorological tories or countries in broadcast centres their respective radio should be broadcasts ensured

Brasilia Brazil Braz~l, southern part of Throughout RA tv, southern and north Region III and ern hemispheric data as in the south received, ships and OWS, ern part of and other selected data Region IV and as regionally agreed in adjacent sea area

Buenos Aires Argentina, Bolivia, Chile, Argentina, Bolivia, Chile, Throughout Paraguay, Peru, Uruguay, Paraguay, Peru, Uruguay, Region III in islands in the South islands in the South the Antarctic Atlantic, Antarctic Atlantic, Antarctic Peninsula and (partly) (partly), ships in the in adjacent South Atlantic and sea areas South Pacific, OWS

Maracay Guyana, Colombia, Ecuador, Guyana, Colombia, Ecuador, Throughout French Guiana, Surinam, French Guiana, Surinam, Region III, in Venezuela Venezuela, southern part the southern of Region IV, ships part of Region operating in the IV and in ad Caribbean area jacent sea areas

* * ANNEX V 79

COLLECTION) EXCHANGE AND DISSEMINATION OF BASIC METEOROLOGICAL INFORMATION IN SOurR AMERICA BY DESIGNATED CENTRES

1--- --, rorto Alegr~ ______1

,------, I--+lo------

Legend: g;;;;j Regional telecommunication hubs

I National meteorological centre

:------:'-_____ 2 Collection centre So ANNEX V

4.3 Collection and transmission t,ime of observational and processed information

The following transmission times are proposed for RTHs:

(a) The collection of observational data from the zone of responsibility should be completed 35 minutes after the observing station's filing time;*

(b) The regional distribution of observational data should start as soon as possible but not later than 20 minutes after the observing station's filing time; *

(c) The transmission of observational data to WMCs is to be completed not later than 45 minutes after the observing station's filing time;*

(d) The schedules for transmission of processed data in pictorial (facsimile) or digital form will be established in consultation between RTHs, RMCs and Members requiring these data.

*NOTE: Definition of the observing station's filing time:

The time when the coded meteorological report is first presented to the telecommunication system. Under normal conditions the message should be presented to the telecommunication system five minutes after completion of the observation including coding.

5· TRANSMISSION PROGRAMMES Transmission programmes of national meteorological centres

The programme transmitted by national meteorological centres or centres with similar functions should be comprised of the following data!

(a) Surface synoptic reports for main and intermediate standard hours, (0000, 0300, 0600, 0900, 1200, 1500, lSOO, 2100 GMT), upper-wind data for 0000, 0600, 1200 and lSOO GMT and radiosonde data for 0000 and 1200 GMT (and if available for 0600 and lS00 GMT) from all stations included in the basic regional network of the respective country and also reports from additional stations, if required;

(b) Reports received from ships and aircraft;

(d) Other types of information, as agreed.

Transmission programmes of RTHs

5.2.1 The transmission programmes of RTHs should meet the requirements of Meteoro- logical Services and the World Weather Watch as a whole as laid down by Congress or the Executive Committee.

5.2.2 The requirements of Meteorological Services will undergo considerable changes during the period 1968-1971. The transmission schedules should take into account: ANNEX V 81

(a) The general WWW data requirements stated by EC-XVII (Annex XIV to the abridged report with resolutions, WMO Publication No. 173.RC.26);

(b) Stated requirements of Members of RA III.

5.2.3 The transmission of data between WMCs, RTHs and NMCs should be made on point-to- point channels. Radio broadcasts might be used until appropriate point-to-point links are available. A complete scheme of a point-to-point telecommunication system is given in para graph 4.2 above.

As regards radio broadcasts for coded information, the content of transmission of observational data and the minimum area in which the interference-free reception of the broadcast should be ensured is set forth in paragraph 4.2 above. The transmission programme should be devised to meet the needs of Meteorological Services depending on these broadcasts.

6. TRANSMISSION OF OUTPUT PRODUCTS OF WMCs AND RMCs

6.1 The regional telecommunications network should be capable of exchanging and distributing the output products of WMCs and RMCs to meet the requirements of Members.

6.2 The exchange of output products (processed information) between centres could be carried out on point-to-point channels in pictorial form or in digital form. The dis_ semination by radio facs~mile broadcasts of processed information in pictorial formwi~l play an important role in the implementation period 1~68-1971.

6.3 Regional facsimile broadcast plan

The RMCs of the Region should distribute their information on the point-to-point network as outlined in paragraph 4.2 above. In addition to the point-to-point transmission, the following centres should establish and maintain facsimile broadcasts:

(a) Brasilia· (b) Maracay (c) Buenos Aires

6.4 Distribution of processed data in digital form

The technical characteristics of transmission of processed data in digital form are under study.

7. ORG.~rzATION OF RA III REGIONftL ·TELECOMMUNICATION NETWORK

7.1 As already described above, the target telecommunication system is based on the use of existing or planned telecommunication facilities (see CCITT/CCIR Plan Committee, "General Plan for the Development of the International Network", pUblished by the Interna tional Telecommunication Union, Geneva, 1964, and WMO Publication No. 9.TP.4, Volume C, Chapter II - Region III).

As will be seen from paragraph 4 above, the plan provides for:

(a) Transmission of data from NMCs (or centres with similar functions) to RMCs or RTHs on point-to-point channels; 82 ANNEX V

(b) Reception of data at NMCs from RMCs on point-to-point channels;

(c) Reception of coded and facsimile data at NMCs or any other location in Region III through radio broadcasts, if point-to-point links are not available.

8. . ENGINEERING OF THE FACILITIES REQUIRED FOR J1VIPLEMENTATION OF THE PLAN

8.1 The facilities to be established and operated under the provisions of this plan should ensure a high degree of reliability and provide for prompt handling of the data.

8.2 Collection of information at NMCs or at centres with similar functions

8.2.1 The choice of telecommunication means for the collection of information from stations located within a territory or country is clearly a matter for decision by the National Meteorological Service concerned. The arrangements will have to comply with the internationally agreed requirements as regards maximum tolerable time delay and reliability of reception.

8.2.2 In some parts of the Region telecommunication facilities available to the public, such as general telegraph and telephone systems, including TELEX systems, can be used. For the collection of data within a country, in some parts of the Region, special-purpose tele communication systems (e.g. aeronautical telecommunication networks) could also be used. Channels leased exclusively for meteorological purposes can best satisfy meteorological requirements where traffic loading justifies.

8.2.3 When general-purpose or special-purpose telecommunication facilities are not available or are not suitable, Meteorological Services may establish and operate their own telecommunications. Both radio-telephone (e.g. SSB radio-telephony sets) or radio-telegraphy (Morse or RTT) can be used for this purpose. Low-power radio transmitters might be used for connexions up to 500-700 km.

8.2.4 In all cases Meteorological Services should keep in close contact with the respective national telecommunication administrations or authorities.

8.3 Exchange of information between NMCs and RMCs and RTHs on point-to-point links

8.3.1 The relatively small amount of information transmitted from some NMCs to RMCs or RTHs in alpha-numeric form will permit the use of low-speed (e;g. 50 or 75 bauds) tele graph channels. Since these channels are normally of duplex type, they can also be used for the dissemination of information from RMCs/RTHs to NMCs (see paragraph 8.3.2 below).

8.3.2 The use of low-speed telegraph channels for dissemination of information from RMCs or RTHs may limit the capability of national centres for the timely reception of all the data needed. If the volume of data required by NMCs cannot be accommodated within the limits established, more than one low-speed channel or, preferably,telephone~type channel, should be used for data and facsimile transmission. However, financial and other consider ations make it necessary, at least in the initial stages of the establishment Of the WWW, to use more readily available telecommunication facilities in some parts of Region III.

Telephone-type channels with a bandwidth of 3 KC/S should be used wherever required and possible.

8.3.4 NMC - RMC telegraph or data links may be shared with other services or rented for a specific time period. ANNEX V

8.3.5 NMC - RMC/RTH links should preferably use cable facilities. If these are not obtainable, radio circuits should be employed. Automatic error-control should be employed on cable and radio channels. In order to achieve maximum circuit reliability careful en gineering of the transmitting and receiving stations, together with proper choice of radio frequencies, is required.

8.4 Connexions between RMCs or RTHs and WMCs

The links between RMCs or RTHs and WMCs should be good-quality telephone-type channels. The terminal equipment should conform to the specifications developed by WMO.

Radio broadcasts in alpha-numeric form made by RMCs or RTHs

8.5.1 In the initial stage, standard (50 bauds) equipment should be used for radio broadcasts from RMCs or RTHs of coded information.

8.5.2 In order to ensure reliable reception within the agreed area, each broadcast should be made on 3-5 suitable frequencies simultaneously, using sufficiently powerful transmitters.

8.6 Radio facsimile broadcast

To ensure reliable reception of facsimile transmissions within a regionally agreed area, each facsimile transmission made by an RMC or RTH should be made on 3-5 suit able frequencies simultaneously, using sufficiently powerful transmitters. The facsimile equipment used should conform to WMO standards. Studies to shorten the time needed for trans mission of pictorial data are being conducted.

Telecommunication equipment Y'equired at RMCs and RTHs

In addition to the telecommunication facilities for reception and transmission of information in alpha-numeric (radio equipment, terminal equipment for cable connexions) and pictorial form, including the facilities for error-control, RMCs and_RTHs in Re~ion III may, if the corresponding functions are to be performed, need the following equipment:

(i) Editing eqUipment (selection of reports, compilation of bulletins,for mation of bulletins, etc.);

(ii) Speed conversion equipment (for high/medium speed to slow speed and vice versa) ;

(iii) Selection and relay facilities for facsimile charts;

(iv) Equipment for conversion from data code (data transmission) to tele graph alphabet No. 2 and vice versa. 84

ANNEX VI Annex to Resolution 17 (IV-RA III)

NETWORK OF CLlMAT AND CLlMAT TEMP REPORTING STATIONS IN REGION III

Index Name CLlMAT CLlMAT Index Name CLlMAT CLlMAT No. TEMP No. TEMP

1 2 3 4 1 2 3 4

80001 San Andres (Isla) X X 82586 Quixeramobim X 028 Barranquilla/Soledad X 598 Natal X X 110 Medellin X 898 Recife X 222 Bogota/Eldorado X X 979 Remanso X 259 Cal~Calipuerto X 83064 Porto Nacional X 405 La Orchila X 208 Vilhena (Aeroporto) X X 407 Maracaibo X 229 Salvador X X 413 Maracay - B.A. Sucre X X 339 Caetite X X 416 caracas/La Carlota X 361 Cuiaba X 419 Barcelona X 377 Brasilia (Cruzeiro) X 438 Merida X 378 Brasilia (Aeroporto) X 444 Ciudad Bolivar X 498 Caravelas X 447 San Antonio del Tachira X X 552 Corumba X 450 San Fernando de Apure X 587 Belo Horizonte X 457 Puerto Ayacucho X 611 Campo Grande X -462 Santa Elena de Uairen X 612 Campo Grande (Aeroporto) X 81225 Zanderij X 702 Ponta Por'a Aeroporto X 405 Cayenne/Rochambeau X X 743 Rio de Janeiro X 82191 Be18m X 746 Rio de Janeiro/ 193 Belem/Aeroporto Val Aeroporto Galeao X de Cas X 781 Sao Paulo x 198 Turiagu X 827 Foz do 19uagu 331 Manaus X (Aeroporto) X 332 Manaus/Aeroporto 840 Curitiba/Aeroporto Ponta Pelada X Afonso Perra X 410 Benjamin Constant X 842 Curitiba 571 Barra do Corda X ANNEX VI 85

1 2 3 4 1 2 3 4

83931 Alegrete X 85114 Magdalena X 967 Porto Alegre X 141 Rurrenaba,que X 971 Porto Alegre/Aeroporto 154 Trinidad X Salgado Filho X 191 Chacaltaya X 997 Santa Vit6ria"do Palmar X 196 Concepci6n X 84008 San Crist6bal (Galapagos) X X 201 La Paz/El Alto X 045 Quito/Mariscal Sucre X 203 Ovejuyo X 129 Guayaquil/Sim6n Bolivar X X 207 San Ignacio de Velasco X )77 Iquitos X 223 Cochabamba X 390 Talara X 230 Char ana X 401 Piura X 242 Oruro X 425 Yurimaguas X 245 Santa Cruz X 435 Moyobamba X 247 San Jose X 444 Chachapoyas X 268 Robore X Chiclayo X 452 289 Puerto Suarez X Tarapoto X 455 315 Camiri X 472 Cajamarca X 322 Uyuni X 474 Juanjui X 365 Yucuiba X 50lTruj i110 X 406 Arica (Chacal1uta) X 515 Puca11pa X 442 Antofagasta/Cerro X X 531 Chimbote X Moreno 534 Tingo Maria X 488 La Serena X 628 Lima-Cal1ao/Aeropuerto 558 Punta Angeles X Internacional Jorge Santiago X Chavez X X 577 585 Juan Fernandez X 658 Puerto Maldonado X 767 Valdivia/Pichoy X 677 Quincemil X 834 Isla Guafo X 686 Cuzco X 86360 SaIto X 691 Pisco X 585 Montevideo/Prado X 721 San Juan X 595 Punta del Este X 735 Juliaca X 87007 La Quiaca X 752 Arequipa X 047 Salta Aero X X 782 Tacna X 065 Pivadavia X 85041 Cobija X 078 Las Lomi tas X 043 Ribera1ta X 120 Tucuman Aero X 104 San Joaquin X 86 ANNEX VI

1 2 3 4 1 2 3 4

87129 Santiago del Estero X 87576 Ezeiza X X 155 Resistencia Aeropuerto 623 Santa Rosa X X Internacional X X 692 Mar del Plata Aero X 178 Posadas X 715 Neuquen X X 217 La Rioja X 748 Base Aeronaval Coman- X 220 Catamarca X dante Espora 257 Ceres X 765 Bariloche X 312 San Juan X 828 Trelew X

344 C6rdoba Aero X X 860 Comodoro Rivadavia X X 395 Concordia Aero X 880 Gobernador Gregores X 400 Cristo Redentor X 912 Santa Cruz X 418 Mendoza (El Plumerillo) X 925 Rio Gallegos X 436 San Luis X 938 Ushu.aia X 480 Rosariq X 88890 Stanley X X 544 Pehuaj6 Aero X 903 Grytviken X ANNEX VII Annex to Resolution 24 (rv-RA III)

AMENDMENTS TO SECTION III. CHAPTER II. VOLUME B OF WMO PUBLICATION No. 9. TP.4

Amend throughout the whole text the FM numbers FM 32.C, FM 33.C, FM 35.C, FM 36.c, FM 53.B and FM 56.c. to read FM 32.D, FM 33.D, FM 35.D, FM 36.D, FM 53.D and FM 56.D, respec tively.

Pages 11-3-1 to 11-3-2

(1) Amend paragraph (ii) Group PPPTT to read: Low-level stations (elevation less than 600 geopotential metres) report mean sea-level pres sure for PPP. Stations at an elevation of/or exceeding 600 gpm, but not exceeding 2,300 gpm, report for PPP the geopotential of the 850 mb pressure level, in geopotential metres. Sta tions between 2,300 and 3.700 gpm report for PPP the geopotential of the 700 mb pressure level and stations above 3,700 geopotential metres report for PPP the station level pressure. Where the actual height of the station is uncertain. station level pressure is reported for PPP.

(2) Amend paragraph (v) Group 7RRjj to read: This group is included in the reports of 0000 and 1200 GMT in the form 7 RRTeTe and in the reports of 0600 and 1800 GMT as 7RR//. RR refers to the previous six-hour period except in the report of 1200 GMT where it refers to the previous 24-hour period. TeTe indicates the maximum day-time temperature TxTx at 0000 GMT and the minimum night-time temperature TnTn at 1200 GMT.

(3) Amend paragraph (Viii) Additional groups with indicator figures 1. 2. 3. 4 and 5 to read:

Group IPsPsPsPs is included in SYNOP reports when possible.

Group 3PwPw~~ (dwewPwHwHw) - these groups are included in SYNOP reports from coastal stations and lightships where observations are feasible.

Groups with indicator figures 2. 4 and 5 - the use of these groups is left to national decision.

(4) Amend paragraph (ix) to read: (ix) Meteorological requirements for the international exchange of surface reports from land stations The following groups are required in surface reports from land stations: (a) for area coverages corresponding to those defined under territorial transmission or broadcast and subregional broadcast (see Chapter I of Technical Regulations) (i) the first six mandatory groups (ii) at 0000.0600. 1200 and 1800 GMT the 7RRjj group (iii) the groups 8NsChshs • 9SpSpspsp and (lPSPSPSPS) 3PwPwHWHW dwdwPwPwHW when possible 88 ANNEX VII

(b) for an area coverage corresponding to that defined under regional broadcast (see Chapter I of Technical Regulations) (i) the first six mandatory groups (ii) at 0000, 0600, 1200 and 1800 GMT the 7RRjj group

NOTES: 1. When pressure change conditions call for the reporting of the group 99ppp this group should receive full dissemination. 2. The rules relating to the telecommunication procedures are contained in the Regional Introduction to the WMO Publication No. 9.TR 4, Volume C, Chapter II, Region III.

(5) Under FM 21.C - SHIP, amend to read as follows: Meteorological requirements for the international exchange of surface reports from ships All groups received from ships are required to be retransmitted.

NOTES: 1. In the case of reports receivea from ships fitted only with radio-telephony, the reports should be edited and coded before inclusion in the territorial, subregional and regional transmissions. 2. The rules relating to the telecommunication procedures are contained. in the Regional Introduction to the WMO Publication No. 9.TP.4, Volume C, Chapter II, Region III.

Pages 1I-3-3 to 1I-3-5a (1) Amend the text under FM 32.D - PILOT to read: (i) Use of the parts of PILOT reports In addition to Parts A and C, the use of Parts Band D is mandatory.

(ii~ Use of sections in the parts of PILOT reports (a) PART A Section 2 Altitudes constituting the best approximation to the standard isobaric surfaces shall be determined nationally. (b) PART B Section 4 In addition to wind data at significant levels, altitudes of which are given in geopotential units, data are included as available, at least for the following altitudes:

surface 2,400 metres 300 metres 4,200 metres 600 metres 6,000 metres 900 metres 8,100 metres 2,100 metres 10,500 metres (c) PART C Section 2 The following altitudes are used as approximations to the standard isobaric surface: ANNEX VII 89

standard iso.baric Alti tude (metres) surface (mb) (thro.ugho.ut the Regio.n) 70 18,300 50 20,700 30 23,700 20 26,400 10 30,900

(d) PART D Section 4 In additio.n to. wind data at significant levels, altitudes o.f which are given in geopotential units, data at the following fixed levels shall be repo.rted: 18,000, 21,000, 24,000,27,000, 30,000; 33,000 metres and all successive levels at3,000 metres pro.vided that they do. not coincide with one o.f therepo.rted significant levels. NOTE: The altitudes 30,000 metres and above must be encoded using units o.f 500 metres, - i.e. the altitudes 30,000 and 33,000 metres will be co.ded as 8606/, the altitudes 36,000 metres and 39,000 metres as 8728/, etc.

(iii) Meteo.ro.Io.gical requirements fo.r the international exchange of reports fromlahd stations The fo.llowing gro.UPS are required in reports: (a) fo.r area co.verages co.rresponding to those under territo.rial trans mission or broadcast and subregional broadcast (see Chapter I of Tech nical Regulatio.ns).

PARTS A, B, C and D. (b) fo.r an area coverage co.rresponding to that defined under regional bro.adcast (see Chapter I o.f Technical Regulatio.ns).

PARTS A and C (additional parts may be required by neighbouring regions). !!Q!!: The rules relating to the telecommunication procedures are contained in the Region al Introduction to WMO Publicatio.n No.. 9.TP.4, Vo.lume C, Chapter II, Sectio.n III.

(2) Under FM 33 ~D - PILOT SHIP amend the text to read: (i) See paragraph (i) under FM32.D - PILOT. (11) See paragraph (11) under FM 32.D - PILOT. (iii) See paragraph (iii) under FM 32.D - PILOT. (3) ·Under FM35.D - TEMP amend the text to read: (i) Use o.f the parts o.f TEMP reports In additio.n to. Parts A and C. the use of Parts Band D is mandato.ry. (11) Use o.f sectio.ns in parts of TEMP reports (a) PART B Sectio.n 9 This section is not used. (b) PART D Sectio.n 9 This section is no.t used. 90 ANNEX VII

(iii) Meteorological requirements for the international exchanges of upper level pressure, temperature, humidity and wind reports from land sta tions The following groups are required in reports: (a) For area coverages corresponding to those defined under territori al transmission or broadcast and subregional broadcast (see Chap ter I of Technical Regulations): PARTS A, B, C and D.

(b) For an area coverage corresponding to that defined under regional broadcast (see Chapter I of Techllical Regulations): PARTS A and C , (additional parts may be required by. neighbouring Regions). NarE: The rules relating to the telecommunications procedures are contained in the Regional Introduction to the WMO Publication No. 9.TP.4, Volume C, Chapter II, Region III. (4) Under FM 36.D - TEMP SHIP amend text to read: (i) See paragraph (i) under FM 35.D - TEMP. (ii) See paragraph (ii) under FM 35.D - TEMP. (iii) See paragraph (iii) under FM 35.D - TEMP.

(5) Delete FM5l.C- ~AFOR and the text thereunder.

Page II-3-7 Under SYMBOLIC LETTERS AND REMARKS AS TO THE METHODS OF CODING, insert PSPSPSPS "" Station pressure in Whole millibars (thousands, hundredths, tenths and units). 91

ANNEX VIII Annex to Resolution 26 (IV-RA III)

RECOMMENDATIONS APPROVED AT THE INTERNATIONAL MEETING ON THE PROBLEMS OF AGRICULTURE IN THE HUMID TROPICS OF LATIN AMERICA (LIMA, May, 1966)

IV Climate

The International Meeting on the Problems of Agriculture on the Humid Tropics of Latin America, on the basis of the conclusions drawn from the papers submitted and the discussions held:

CONSIDERING

(1) That the network of meteorological stations in the humid tropical regions of Latin America is very inadequate, its equipment being generally incomplete;

(2) That there is an urgent need for meteorological and climatological inform ation for application in the development of agriculture and forestry work in the .humid tropics of Latin America;

(3) That at present there is a great deal of meteorological data on regions with a humid and tropical climate, scattered and still unpublished;

. (4) That training in agricultural meteorology and agricultural climatology is not adequate so that only a small number of specialists are available;

(5) That a closer collaboration is required between the various specialists in the ecology of the humid tropics;

(6) That there is little research on the relation between climate and economic plants,

RECOMMENDS

(1) That more meteorological stations be set up in humid tropical regions of Latin America, specially in the areas of sparse climatological information;

(2) That all experimental farming stations and forestry research stations be provided with complete agrometeorological stations in accordance with the regUlations of the WMO.

(3) That an effort be made to ensure that at least one quarter of the climat ological stations have sunshine recorders and one quarter rainfall recorders; 92 ANNEX VIII

(4) That accumulative raingauges or other automatic meteorological equipment be installed in areas where access is difficult;

(5) That zones with different types of climate be provided with a close net work of climatological stations for the study of the local climate and the topoclimatic variations;

(6) That National Meteorological Services be required to collect and conserve all of the meteorological data available in their regions with humid and tropical climate, proceeding to their publication;

(7) That agricultural information be collected relating to the climate and on the vegetative cycle of plants, the seasonal occurrence of pests and diseases of economi cally important crops and that phenological data on natural vegetation also be collected;

(8) That the universities and centres of agricultural research be recommended to give courses on meteorology and agricultural climatology iike the ones, for instance, at the Inter-American Institute of the Agricultural Sciences at Turrialba, Costa Rica;

(9) That teams of specialists be trained at the universities and research centres for the study of ecological conditions and the planning of land use in the humid tropics;

(10) That agroclimatological research be encouraged in order to obtain prelimi nary basic information on the climate of the American humid tropics and to permit the delimi tation of the zones of humid tropical climate and of differing natural vegetation with greater accuracy;

(11) That as soon as sufficient information is available, the preparation of maps showing the various meteorological elements rel~ting to the demands· of various crops should be more actively pursued and their publication should be such as to permit sufficiently extensive use of them;

(12) That special studies be promoted to determine, by means of the heat and water balance parameters, the possibility for the cUltivation of various plants in the area. 93

ANNEX IX Annex to Resolution 29 (rv-RA III)

RESOLUTIONS ADOPrED PRIOR TO THE FOURTH SESSION AND MAINTAINED IN FORCE

Res. 4 (I-RA III) - BIOCLIlviATIC OBSERVATIONS AT HIGH ALTITUDE STATIONS

THE REGIONAL ASSOCIATION FOR SOUTH Afu~RICA,

CONSIDERING the value in certain scientific investigations, of meteorological observations made at high altitude stations;

RESOLVES that Member States should take the necessary measures to enable high altitude meteorological stations to be used for observa tions in bioclimatology, cosmic radiation and other scientific fields.

Res. 7 (I-RA III) - METEOROLOGICAL RECONNAISSANCE FLIGHTS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING,

(1) That there is an urgent requirement for meteorological observations in areas for which the customary synoptic data are not available; (2) That flights having meteorological reconnaissance as their sole purpose are beyond the present resources of the majority of coun tries in the Region? and REALIZING that in many countries in Region III the national Air Forces make many flights over the areas in questiori;

RESOLVES, (a) That all Members of Regional Association III should utilize to the greatest extent possible military aircraft on regular flights, as well as on any other flights, to obtain meteorological data which will provide a substitute, at least in part, for the synoptic data lack ing from certain areas; and

(b) That to ensure the greatest accuracy in the repOrts, train ed observers shall, whenever possible, be members of the crews of the aircraft. 94 ANNEX IX·

Res. 26 (I-RA III) - PHENOLOGICAL STUDIES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING the importance of phenological studies;

RESOLVES that the president of Regional Association III shall request the Commission for Agricultural Meteorology to revise and bring up to date the lists of plants of South America that are contained in Resolution XXVII of the fourth session of Regional Commission III, Buenos Aires 1948.

Resolution XXVII (CR III Buenos Aires 1948)

REGIONAL COl!lMISSION III,

CONSIDERING that Resolution XXVII of the second session of Re gional Commission III (Montevideo 1939) stresses the need to establish a network of phenological stations in all South American countries, and that it is useful to collect the basic data for the organization of a South American Phenological Service;

RECOMMENDS,

(1) That each country try to plant at its main agrometeorologic al and meteorological stations, a collection of plant species which should be submitted to phenological observations. The phytological col lection should be composed of the following species : (a) Salix Humboldtiana, Parkinsonia, Aculeata and Prosopis juliflora, which adapt themselves to ?lmost every climatic condition on the continent? (b) Acacia visco (visco-viscoto), for the southern part of the Andes region? (c) Erithrina velutina (Bucavo), for the northern part of the Andes region; (d) Terminalia catapoa (Alrnendr6'1), for the northern tropical part of the continent? (e) Anacardium occidentale (Merei), for the north-eastern part of the continent; (f) Dolomix regia (Poinsiana regia)(Flambayan), for the amazonian region; (g) Coffea arabiga (Cafe), even though not native, for the whole re gion where it is cultivated; (h) Jacaranda aculifolia, for the Parana basin; ANNEX IX 95

(i) Peireskia guanacho (Guanacho), for all regions of dry climate~ (j) Hedera helix (hiedra) because of its great adaptability and be cause it is observed in many countries:;

(2) That the inclusion of typical representatives of the prin cipal phytographic formations of the continent be tried for the purpose of studying their phenological reactions~ in their original area as well as in other regions. Other specimens from other continents, which are observed by many countries, are also to be included, in order to form the basis of the international collection;

(3) That for acceptance in collections, the specimens shall be of a uniform type, with this aim in view, all specimens of a given spe cies should be grown in the same nursery and their reproduction should be made whenever possible by the agamic method, or seeds should come from only one specimen; the age of all individuals should be the same and their height, vigour and other vegetative conditions should be si

milar:I (4) That each collection or phenological garden shall be in a meteorological station, in order to permit the study of the biological reactions of the individuals therein. Distribution of species in all gardens should be similar and conform to a single plan;

(5) That observations begin each year on June 21st with the winter solstice, and that each service inform the others, at this time, of the results obtained from observations performed during the previous year.

Res. 5 (II-RA III) - AUTOMATIC WEATHER STATIONS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA, HOTING Resolution 16 (EC-V) and Recommendation 7.1/5 of the se cond SAM/SAT/RAN Meeting,

CONSIDERING,

(1) The cost of and the maintenance difficulties associated wi th "fully" autoH1atic weather stations so far developed, which report ed ·several elements3

(2) That it is possible to obtain reports of certain meteoro logical elements through the ~eans of semi-automatic weather stations, with a degree of accuracy such that these observations could be consid ered as satisfying a requirement set out in the basic synoptic network:;

INV ITES j,IE/lBERS,

(1) To note the possibility of using semi-automatic weather sta tions as a means of filling gaps· on the surface synoptic network or in the programme of observat~ons at existing stations; (2) To note the possibility of employing simplified automatic stations on land and ocean areas for the purpose of observing and re porting certain simple elements required by meteorology, hydrology and related fields of application. 96 ANNEX IX

Res. 18 (II-HA III) - RECEPTION OF WEATHER REPOP.TS FROM SHIPS, PARTICULARLY OF TriE PAciFIC COAST

THE REGIONAL ASSOCIATION OF SOUTH Ar.iERICA,

NOTING, (1) The deficiencies in the network of coastal radio stations within the Region)

(2) The complete absence of coastal radio stations accepting weather reports free of charge from ships of all registries along the Pacific COrtst of South America? and

~3) The intention Of Venezuela to establish a radio ?tation on the north coast;

CONSIDERING that it is urgent to effect improvements in the si tuation, particularly in respect of the Pacific Coast;

(1) Chile, Ecuador and Peru to designate the radio stations at Valparaiso, Salinas and La Punta respectively, as coastal stations which will accept weather reports from ships of all registry free of chargej

(2) Other countries concerned to make such improvements as are possible in the system of collecting ship reports by their coastal radio stations.

Res. 31 (II-RA III) - l1EGIONAL METEOnOLCGICAL BI8LICGRAPHY

THE REGIONAL ASSCCIATION FOR SOUTH Ai':lERICA,

NOTING. with satisfaction the offer made by the Brazilian dele gation to establish in their country a regional bibliographical cen tre, in charge of gathering the information provided by all Members and of publishing a bibliographical bulletin on all aspects of region al meteorology; Clnd CONSIDERING the great value of such a publication for the de velopment of the vlhole field of meteorological research in the Region)

DECIDES, (1) To accept, with thanks, the offer made by Brazil) and

(2) To invite all the Members to furnish to the above-mentioned regional bibliographical centre the information required for the pre paration and publication of the bulletin; and

REOUESTS the president of the association to take~ in collabo:ca tion with 'the permanent representative of B:cazil, the necessary action to implement this resolution. ANNEX IX 97

Res. 34 (II-RA III) - NATIONAL METEOROLOGICAL COMMITTEES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

CONSIDERING,

(1) That the development of the meteorological and climatologi cal activities of Member countries requires the collaboration of all official and private institutions involved~ and

(2) Tha~ in order to achieve a more rapid and complete develop ment of the meteorological services 1 as well as to ,increase their con tribution to the economic development of their countries, all duplica tion of expenses and e"fforts in this respect must be avoided as much as possibleJ INVITES Member countries which have no centralized meteorological services, to establish national meteorological committees in order to examine and co-ordinate the working plans regarding meteorology and cli matology, with a view to recommending such action as should be taken for the solution of the-particular problems of the country, and to deal with the problems of international co-operation resulting from the affiliation of the country to the World Meteorological Organization; REQUESTS the president of the regional association to take the necessary steps to collaborate with the permanent representatives of the Members in the creation of the above-mentioned national meteorological committees.

Resolution 8 (66-RA 1111

IMPRUvill'iEl.~T OF THE COLLECTION AND DISTRIBUTION ARRANGEMENTS

FOR BASIC ~lliTEOROLOGICAL INFORMATION n~ THE AREA OF RESPONSIEILITY OF THE SUBREGIONAL BROADCAST CENTRE OF MARACAY

THE REGIONAL ASSOCIATION FOR SOUTH A~lliRICA,

NOTING

(1) Resolution ll(II-RA III),

(2) Final Report of the RA III Working Group on Meteorological Tele communications (~mracay~ November 1964),

(3) Final Report of the Technical Conference on Meteorological Tele communications in South America (lVlaracay, November 1964), 98 ANNEX IX

CONSIDERING the need for an improvement in the collection and distribution of basic meteorological informat;on'~ ~n th e area 0 f responsibility of the subregional broadcast Centre, MaracaYl

. DECIDES that the basic meteorological information at present transmitted ~n MORSE code by the appropriate territorial centres· be forwarded within one hour following the stan~ard hours of observation, so that the data would be more quickly available for broadcasting at the Maracay subregional Centre;

URGES Members concerned to endeavour to improve their transmission arran!ements as indicated in the annex to this resolution.

Annex 1;0 Resolution 8 (66-RA III)

ACTION TO BE T.Il.K.8N TO nlPROVB TF.J!] TRll.HSMISSIO.N ARIiANGEl\ihlNTS FOR BASIC }lliTEQROLOGICAL DATA WITgJN THE AREA OF RESFmiSIBILITY OF THE SUBREGIONAL BROADCAST CENTRE, MARACAY

The following specific action is required ~

(a) Colombia and Ecuador should take into account the prov~s~ons of Resolution 11 (II-RA III) and make all necessary efforts to ensure that they are able to comply, as soon as possible, with the obligations imposed by- the WIIlO Tech..."lical Regulations with respect to territorial broadcasts. Furthermore, in vievr of the absence of meteorological telecommunication links, and in order to overcome the deficiencies arising from the lack of territorial broadcasts, the Members concerned are urged to investigate the possibility of using other facilities that may be available (such as AFTJlT links or public service, civil or military installations, and to co-ordinate with the competent autho rities all matters connected with the use of s~ch communication facili ties in order that the Maracay subregional Certtre may receive directly the appropriate basic meteorological information.

(b) British Guiana should take the neces~ary steps to ensure the availabili\lf ofits meteorological information at the P1'Lrc;;,maribo coll~ctirrg sub-centre. For this purpose any available facilities should be used, and the Haracay subregional Centre should be notified of the technical charac teristics of the circuit. Furthermore, as British Guiana transmits its basic meteorological information to Port of Spain/Piarco, by radio teleprlllter AFTJlT links using a multiplex single side band system (SSB) , British Guiana and. Venezuela should take the following steps immediatelyg (i) British Guiana is to provide upto date information on the characteristics of the lipk, 99

(ii) Venezuela and British Guiana are to make the necessary tests to ascertain whether the AF~~ point-to-point link between Georgetown/Atkinson and Port of Spain/Piarco of the NMO Channel 0145 is capable of being received at the Maracay subregional Centre. Furthermore British Guiana is requested to provide the necessary information which will enable Venezuela to ascerta]Qwhether the above-mentioned AFTN cirouit has suffioient capacity and relative operational flexibility to satisfy the requirements which may b€ acoeptable to the i'!Iaracay subregional Centre as regards broadoasting times.

(c) Maracay subregional Centre is urged to take the necessary steps to acquir'Ei',as soon aapessible, multiplex single side-band equipment (SSB) in order to comply with the recommendation made in (b}a..bove. vllien selecting the multiplex SSB equipment the ultimate aim, namely the implementation of the "TelecoIiunuriication Plan for South America" should be kept in mind.

(d) Members concerned should take into consideration the serious deficiency existing with regard to the reception of meteorologioal reports from ships on the west coast of South Ameri.ca due to the failUre to implement Resolutio~ 18 (II-RA III). In this connexion, considering that ships I reports of observations made within Region III . are collected by Balboa (C.Z), the subregional Centre,Maracay, is urged to take adequate steps to arrange for the reception of the informatioh collected by Balboa in Maracay, to exchange this information with other RA III subregional centres and to disseminate it in its own zonE; of responsibiii ty.

Resolutios 9 (66-RA III)

IMPRUVEMENT OF THE COLLECTION ARRANGE~ffiNTS FOR BASIC- METEOROLOGICAL____, .0 INFORIv'lAT-ION IN THE AREA O-F RESP0NSIBILI!I'¥OF TIlE SUBREGIONAL .1 =tr BROADCAsT CENTRE OF BUENOS AIRES

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA,

NOTING

(1) Resolution 11 (II-RA III)~

(2) Final Report of the RA III Working Group on Meteorological Telecommunications (~~racay, November 1964),

(3) Final Report of the Technioal Conferenoe on Meteorologioal Telecommunioations in South Amerioa (Maracay, November 1964)? 100 ANNEX IX

CONSIDERING the need to improve the collection of basic meteorological information in the area of responsibility of the subregional broadcast CentrA

Buenos Aires by the ostablishment of a number of point-to-point circuits 9

lllVITES Members, whose reports are to be included in the transmissions of the Buenos Aires broadcast Centre, to continue and, where possible, to improve the present transmission arrangements as specified in the annex to this resolution.

Annex to Res-olution.. 9 (66-RA III)

SPECIFIC ACTION TO BE TAKEl~ TO ENSURE THE RAPiD COLLECTION OF BASIC METEOROLOGICAL INFORMATION BY BUENOS AIREfi

( i) Argen tina-Chile link The existing broadcasts of basic meteorological information of the Air Force and Navy from Chile should be continued in order to ensure their reception at the subregional Centre of Buenos Aires; suitabie measuxes should also be taken to speed up the conclusion of a bilateral agTeemen t to enable a San tiago-lVIendoza channel (leased circuit) to be established.

(ii) Argentina-Uruguay link Members concerned should continue the ]'Jlorse (AI) broadcasts (General Administra tion of lVleteorology, Uruguay and National Meteorological Service, Argentina) and take the necessary steps to speedup the conclusion of a bilateral agreement permitting the leasing of a communication link between Buenos Aires and Montevideo.

(iii) Argentina-Paraguay link The existing operating conditions to be maintained.

(iv) Argentina-Peru link The·Buenos Aires subregional Centre will take the necessary steps to receive territorial broadcasts from Peru. In this connexion, and in view of the delay·· in the transmission of such broadcasts, it is recommended that negotiations be undertaken with Peru in order to eliminate this deficiency. ANNEX IX 101

(v) Argentina-Bolivia link

On the basis of the information available~ the Conference could only recommend that the Morse (Al) broadcast to the Buenos Aires subregional Centre should continue.

(vi) Uruguay-Falkland Islands To continue the Morse (Al) broadcast.

Resolution 10 (66-RA III)

ThffiTEOROLOGICAL'BROADCASTS BY RADIO TELEPRINTER

THE P~IONAL ASSOCIATION FOR SOUTH AMERICA,

NOTUTG

(1) Resolution 13 (II-RA 111)7

(2) Rec.ommendation 35 (Cmll-II),

CONSIDERING

(1) That in order to satisfy the reQuirements within the Region, in particular for aircraft operations, it is indispensable to speed up the collection and distribution of basic meteorological information,

(2) Tha t the Morsd broadcas ts (regional, subregi onal, terri torial) will be gradually converted into RTT7

URGES Members

(1) To convert their Morse (Al) territorial broadcasts into radio teleprinter broadcasts at an early date;

(2) To install, as soon as possible, RTT receiving sets for the reception of meteorological information by RTT. 102 ANNEX IX

Resolution 11 (66-RA III)

COLLECTION, AND DISSEMINATION OF SHIPS t WEATHER REPORTS

THE REGIONAL ASSOCIATION FOR SOUTH AMERICA , <. NOTING

(1) Resolutior. 11 (II-RA tIl),

(2) Resolution 18 (II-RA III),

(3) Resolution 1 (III-RA III),

(4) Final Report of the Technical Conference on Meteorological TelecOIJ!IIlunications in South America (Maracay, November 1964),

(5) Final Report of the first session of the IULIII Working Group on Meteorological Telecommunications (Maracay, November 1964),

(6) Reoommendation 11 (c~m-IV) as approved by Resolution 14 (EC-XVII),

(7) Recommendation 1 of the first session of the RA III Working Group on Problems Relating to Meteorological Reporting by Ships and to Forecasting for Shipping Purposes (Buenos Aires, September 1965),

CONSIDERING

(1) The desirability of faoilitating, as far as possible, the trans mission of ships' weather reports to designated ooastal radio stations and of ensuring the availability of a greater quantity of observations,

(2) The need to continue the present temporary arrangements for the oollection of ships' weather reports originated in the eastern South Pacific area,

DECIDES

(1) That, for the oolleotion of ships' weather reports, Region III _ shall be oansi-dered as a single zone i

(2) That, for purposes of international dissemination, all snipsl weather reports collected by the designated cuastal radio stations in the Region should enter the telecommunicatiun sysxem for the exohange of basic meteorulogical data in the same way as the synuptic reports frum land stations, i.e. thruugh the territorial and subregional broadcast centres (or centres fulfilling similar functions), and be inoluded in the regional broadcast of Brasilia; ANNEX. IX 103

. (3) That, as a temp~rary measure pending the implementation of Re~olutl~n i8 (II-RA III),· ships plying in the Pacific waters of the Region shuuid continue to clear their weather reports through the coastal radio statiun BALBUA-NBA, if unable to cuntaot other HF coastal radio stations within Region III;

(4) That the subregional centre uf Maracay shuuld take adequate steps tu arrange fur the reception in Maracay of ships! weather reports coJ,lected by Balboa under (J) above, to exchange this information with other subregional centres in the Region and tu disseminate it in its uwn zune of responsibili ty.

~ylution 12 (66-RA TIll

lIiAXIlVlUl'IlAmnSSIBLEt DEUX 'I~_RANSlIiISSION OF SHLf?St WEATHER REPORTS

THE REGIONAL ASSOCIATIUN FUR SOUTH MlERICA,

NOTING

(1) Technical Regulations 6.2.2.6 and 6.2.2.7,

(2) Resolution 17 (II-RA III),

(3) Paragraph (e) o.f the a1'.nex to ltecummendatiun I? (CMlVl-IV) ,

(4) Paragr~ph 5 (b) o~ Part 1 uf the annex to Recommendation 11 (ClVJlVl-IV) ,

(5) Recomtnenc_ation 2 of the firs.t session of the RA III Working Group on Problems Relating to Meteurolugical Reporting by Ships and to Forecasting fur Shipping Purposes (Buenus Aires, September 1965),

CONSIDERING

(1) The lack of weather information from the ocean areas of the Southern Hemisphere,

(2) The need to define maximum admissible delays for the trans mission of weather reports from l'\obile ship stations to coastal radio stat.ions and for the inclusion of these repor-"s L..'l the territorial broadoasts,

(3) The desire,bili ty of avoiding unnecessary oongestion of the tele communication networks Iii th delayed reports uf lesser synuptic importance, 104 ANNEX IX

DECIDES that, subject teo tho genera.l principle that ships' weather reports shuuld be cle-:l::"'0d i~Dl8diately after the time of observation, whatever the number of radio opera-bc)rs o:a bou,rd, the following periuds from the time of ubservation be accepted &s !!laxiErL'J!l delp-y in the transmission of wea.ther reports from mobile shi~ 8t~tiQ~s to co~stel radio stations : (e,) 6 hours when the ship is >1i thin 500 km from the ooast; (b) 12 hours when the ship is beyond 500 km from the coast;

URGES Members conoerned

(1) To do their utmost in order to expedite the transmission of ships' weather reports from coastal radio stations to territori-al broa.dcast centres;

(2) To provide the President of the Association with detailed information un the routing of SHIP reports and transmit times between the reoeption of the reports of the designated coastal radio statiuns and the dissemination uf the rcpurts in t~rriturial broadoasts;

DIRECTS the RA III Wurking Group on Meteorological Teleoommunioations to make a oomprehensive study of the information supplied by Members aooording to paragraph (2) under "URGES IViembers oonoerned" in order to enable a regional agreement to be reached for the dissemination of delayed SHIP reports.

Resolutiun 13 (66-RA III)

CALL FOR SHIPS' WEATHER REpuR'!'S BY DESIGNATED COASTAL RADIO STATIONS

THE REGIONAL ASSOCIATION FOR SOUTH ~ffiRICA,

NOTING

(1) Teohnioal Regulations 6.2.2.2 and 6.2.2.7,

(2) Resolution 17 (II--RA III),

(3) Recommendation 7 of the first session of the RA III Working Group on Problems Relating to Meteorological Reporting by Ships and to Foreoasting for Shipping Purposes (Buenos Aires, September 1965),

CONSIDERING

(1) The sparsity of weather information from the extensive ooean areas of the Southern Hemisphere,

(2) The need to have the greatest possible quantity of observations from mobile ships, ANNEX. IX 105

(3) The good results obtained by Brazil in the inorease of the numbel' of shipsl weather reports reoeived, by the inolusion in the ooastal radio station traffio lists of a general oall for SHIP (OBS) reports,

INVITES Members of the Association operating ooastal radio stations designated for the reoeption oi' weathe:!.' :cepo.ds fl'ee of oharge to the ship, to study the possibility of inoluding in the traffio lists of these ooastal radiO stations a general oall for ships to transmit SHIP (OBS) reports. 106

LIST OF DOCUMENTS

Doc. Title Agenda item Submitted by No.

1 Provisional agenda 2.2 2 Explanatory memorandum relating to provisional agenda 2.2 3 Meteorological training 12 Secretary-General 4 Technical co-operation 13 Secretary-General 5 Barometry - Regional comparisons of 14.1 Secretary-General barometers 6 Report on the activities of the 3, 11 Chairman of the Working Group for the Preparation of Working Group a Climatic Atlas for South America for the period from 20 April 1963 (III-RA III, Geneva) to 8 August 1966, Add. 1 7 Climatology - Network of CLIMAT and 11 Secretary-General CLIMAT TEMP stations - Reference climatological stations 8 Codes 14.3 Secretary-General 9 Regional aspects of the World Weather 5 Secretary-General Watch 10 Report by the president of Regional 3 President of RA III Association III 11 Statement of requirements of Meteo- 4 Secretary-General oro logical Services of RA III regarding basic meteorological information from inside and outside the Region 12 Telecommunications - Review of the 5, 7 Secretary-General regional telecommunication arrangements for the collection, dissemination and exchange of basic met~orological data in coded and pictorial form - Regional aspects of the World Weather Watch 13 Aeronautical meteorology 10 Secretary-General 14 Radiation 14.2 Secretary-General 15 Report by the chairman of the Regional 3, 8 Chairman of the Association III Working Group on Working Group Hydrometeorological Questions 16 Report by the chairman of the Working 3, 14.4 Chairman of the Group on Agricultural Meteorology Working Group LIST OF DOCUMENTS 107

Doc. Title Agenda item No. Submitted by

17 Report by the chairman of the Regional 3, 14.3 Chairman of the Association III Working Group on Codes Working Group 18 Review of the resolutions and recommen 16 Secretary-General dations adopted before the fourth ses~ sion of RA III including Executive Com mittee resolutions relating to RA III 19 Planning of basic synoptic networks of 6 Secretary-Gener'al surface and upper-air observing sta tions taking into account· supplementary observations 20 Report by the chairman of the Working 3, 9 Chairman of the Group on Problems Relating to Meteo Working Group rological Reporting by Ships and to Forecasting for Shipping Purposes 21 Maritime meteorology 9 Secretary-General 22 Agricultural meteorology 14.4 Secretary-General 23 Regional activities in the field of 8 Secretary-General hydrometeorology 24 Ground radar weather observations 14.5 Secretary-General 25 Report by the chairman of the Regional 3, 7 Chairman of the Association III Working Group on Meteo Working Group rological Telecommunications 26 Barometry 14.1 Chairunan, Committee A 27 Ground radar weather observations 14.5 Chairman, Committee A 28 Report to Plenary on items 1, 2 and 3 1, 2 and 3 President of the Add. 1 Association 29 Nominations of members of working 15 President of the groups and nomination of rapporteurs Association 30 Planning of the basic network of surface 6 Chairman, Committee B and upper-air observations 31 Telecommunications (Part I) 7 Chairman, Committee B 32 List of candidates for president and 17 Chairman, vice-president for the period 1966-69 Nomination Committee 33 Statement of requirements of Meteorolo- 4 Chairman, Committee B gical Services of RA III regarding basic meteorological information from inside and outside the Region 34 Agrometeoro1ogy 14.4 Chairman, Committee A 35 Radiation 14.2 Chairman, Committee A 36 Hydrometeorology 8 Chairman, Committee A 37 Regional aspects of World Weather 5 Chairman, Committee B Watch 108 LIST OF DOCUMENTS

Doc. Title Agenda item Submitted by No.

Review of resolutions and recommenda- 16 Chairman, ad hoc Committee tions adopted-before the fourth session of RA III including Executive Committee resolutions relating to RA III 39 Codes 14.3 Chairman, Committee B 40 Telecommunications (Part II) 7 Chairman, Committee B 41 Aeronautical meteorology 10 Chairman, Committee A 42 Professional training 12 Chairman, Committee C 43 Climatology 11 Chairman,. -Committee A 44 Maritime meteorology 9 Chairman, Connni ttee B 45 Technical co-operation 13 Chairman, Committee C WORLD METEOROLOGICAL ORGANIZATION

======~======~======

Supplement to WMO Publication No. 207oRP.74

Decisions of the Executive Committee on the Abridged FiYl.al Report of the fourth session of Regional Association III (South America)

This document is a supplement to WMO Publication No. 207.RP.74 - Abridged Final Report of the fourth session of Regional Association III - and should be considered as a guide to the status of the deoisions adopted at that session.

* * *

- 3 -

REPORT OF~ THE FOURTH SESSION OF REGIONAL ASSOCIATION III

THE EXECUTIVE COM1UTTEE,

HAVING CONSIDERED the report of the fourth session of RA III,

DECIDES

(~) To note the report,

(2) To note Resolutions 1 to ]0 (IV-RA III);

(3) To take action on the recommendations as follows

'Recommendation 1 (IV-RA III) - Financial support to the President of Regional Association III

NOTES that the Fifth Congress took action concerning this recommenda tion under agenda item 6.1; . Recommendation 2 (IV-RA III) Collection of ships' weather report~ in the area south of 60 o S,

(a) Req.uests the Secretary-General to consult all Members signatories of, the Antarctic Treaty concerning this recommendation,

(b) Authorizes the President of WMO to take appropriate steps pursuant to this recommendation in the light of the comments received from the M8mbers referred to in paragraph (a);

DlBECTS the Secretary-General to bring the above-mentioned decisions to the attention of all concerned.

NOTE This resolution replaces Resolution 29 (EC-X) which is no longer in force.

- 5 -

B. __DECISIONS ...... ______RECORDED -"'>~ IN __THE _=oGENERAL ______SUJ.VIMARY ..:::::>o""""'=_~OF THE WORK _____ OF EC-XIX _

2.1 Report of the fourth session of Regional Association III (Item 2.1)

2.1.1 The Executive Committee noted with appreciation the report of the Vice-President of RA IlIon the fourth session of the Regional Association.

2.1.2 The Executive Cownittee noted with appreciation the information contained in Seotion 12 of the General Summary of the report of the session conoerning meteorologioal training aotivities in the Member oountries of the Association. The Executive Committee also took note of the provisions of Resolution 20 (rV-RA III) and direoted the Secretary-General to collabor.ate and assist so far as possible in the full and early implementation of those provisions.

The Executive Committee also showed interest in the proje at for the expansion of meteorological and hydrological networks in the Amazon basin and agreed that the Secretariat should use its good offices in asSisting governments in the implementation of the provision of Resolution 21 (IV-RA III).

ERRATA

On page VI - LISTS OF PERSONS ATTENDING THE SESSION paragraph 2, under Bolivia g

E. Padilla Caero Principal Delegate Bolivia E. Beltran Gutierrez Delegate