INDIA METEOROGLOGICAL DEPARTMENT

AERONAUTICAL CLIMATO LOGICAL SUMMARIES CONTENTS

PREFACE WMO MODELS - A, B, C, D,E&Table VI BASED ON DATA FOR THE PERIOD 1998 - 2002 INTRODUCTION

MODEL A

MODEL B

MODEL C NEW DELHI MODEL D (INDIRA GANDHI INTERNATIONAL) MODEL E AIRPORT TABLE VI

FIGURES

OFFICE OF THE ADDITIONAL DIRECTOR GENERAL OF METEOROLOGY (RESEARCH) INDIA METEOROLOGICAL DEPARTMENT 2006 2006 DESIGNED & AUTHORED AT THE METEOROLOGICAL OFFICE PRESS PUNE P R E F A C

P R E F A C E

Meteorological services for Aviation are very essential for making air navigation safe, cost effective and efficient. Aircrafts mostly fly in the lower atmosphere where most of the weather systems develop and decay during their life cycle. The relevant information of meteorological parameters - particularly atmospheric pressure, weather, wind, visibility & runway visual range (RVR), cloud height and temperature are needed for the operation of an aircraft from take off to the landing phases. Apart from current weather, climatology of an airport is also very important for determination of runway orientation, flight planning and to understand weather factors affecting a particular airport at a particular time.

It is therefore very essential that climatology of an airport is available as a ready reckoner to understand frequencies of various weather elements in different temporal scales which affect aircraft operations.

Earlier, Aeronautical Climatological Summaries in respect of four International Airports were first published by India Meteorological Department in 1975. In view of the explosive growth in aviation industry and also in view of rapid advancement in information and computing technology, it has become necessary to update these summaries and also to extend them to other airports. With this in view Aeronautical Climatological Summaries for twenty International and National Airports using the data for the period 1998-2002 are presented in the pattern of WMO models A, B, C, D, E and Table VI in accordance with the procedures laid down in Technical Regulations and as per ICAO Annex. 3.

These models are described below:

MODEL A Monthly mean number of occurrences of runway visual range/ visibility and / or height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky below specified values at the specified time. MODEL B Monthly mean number of visibility below specified values (in metres) at the specified time.

P R E F A C

MODEL C Monthly mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified time.

MODEL D Monthly mean number of occurrences of concurrent wind direction (in 30° sectors) and wind speed (in knots) within specified ranges.

MODEL E Monthly mean frequency of occurrences of screen temperature (°C) in specified ranges of 5 degrees of the specified time.

TABLE VI Monthly mean atmospheric pressure (in hPa) at the reference level / mean sea level (for low level stations) at the standard times for surface synoptic observations.

In addition to the above models and table, useful Climatological information in pictorial form based on long period data is also provided at the end of each model.

These climatological summaries have been prepared by the Surface Statistics and Planning section, Office of the Additional Director General of Meteorology (Research), Pune under the guidance of Shri Thakur Prasad, Deputy Director General of Meteorology (Climatology) and Dr. T. P. Singh, Meteorologist.

Valuable contributions were made by Smt. S. V. Mhasawade, A.M. I, Shri A. B. Bhole, S.A., Shri P. S. Balki, S. A. and Smt S. H. Joshi, S.O. towards the preparation of these Summaries. The required software for quality control of data, preparation of normal of meteorological parameters and tables in these models was developed by Shri A. K. Jaswal, Meteorologist at the National Data Centre, Pune. The designing and the printing of these manuscripts were done by Shri Abraham Philipose, A.M. II at the DTP and printing unit. My appreciation goes to all of them.

I am hopeful that this updated publication will serve as a useful source of adequate and authentic information to aviation services.

Pune – 5 Dr. (Mrs.) N. Jayanthi September 2006 DDGM (WF) LACD of ADGM(R)

I N T R O D U C

I n t r o d u c t i o n

Delhi is the capital city of India since old times. Delhi is one of the most historic capitals in the world and two of its monuments- Qutub Minar and Humayun’s Tomb are known as world heritage sites. Delhi is today, one of the fastest growing cities of India which is having a population of around 13.8 million. It is also capital of the state of Delhi. It is widely spread over 1483 square kilometers and is surrounded by two states- Uttar Pradesh and Haryana. It is the gateway to India, being well linked by road, rail and air to important cities of the country. It serves as a perfect introduction to the cultural wealth, the complexities and dynamism of India. Delhi, besides being the seat of Central Government, has an economy supported by tourism, commerce, and a growing information technology industry. It is also epicenter of the nation’s politics, economy and culture. It has a number of leading educational institutes for higher learning, training, research and development in science, medicine, engineering and technology. With the development of architectural infrastructure facilities, Delhi plays host to a number of national and international events including sports related events, conferences and seminars. Delhi is an international hub of export and import of goods in the country.

Indira Gandhi International Airport, New Delhi (Lat. 28º34’ N and Long. 77º07’ E) is situated at Palam in the south-western part of the city at an altitude of 233 metres. The airport is one of India’s main domestic and international gateways. It is connected with major cities of India and other countries. It has two terminals. Terminal- 2 at new building of the airport is used for international flights while Terminal-1 (older airport Palam) is exclusively used for domestic operations. It has two runways-main runway 10-28 is about 4 km long and an auxiliary runway 09-27 is about 3 km long. Runway 10-28 is equipped with CAT III-B instrument landing system which is one of the few runways in Asia. It is the first Indian airport which is operating two runways simultaneously. The airport is the home of several Indian airlines including Air Sahara, Spice Jet, Alliance Air and IndiGo Airlines. Some airlines use this airport as their second hub after Mumbai’s CSI Airport. It is used by various national and international airlines. The airport handles an average of 490 daily scheduled commercial movements including 130 international flights. The airport operates round the clock and currently handles up to 22 landing and takeoff per hour. On 30th March, 2006, the airport reached a record number of 551 of arrivals and departures.

The climate of Delhi is of continental nature. The city has an extreme type of weather, very hot in summer season and very cold in winter season. Sometimes it is affected by western disturbances, mist, fog, thunderstorms, dust storms and squalls. Meteorological Office at the airport Delhi started functioning since January 1952 and is equipped with modern instruments to record and report meteorological parameters.

During January and February weather in Delhi is cold. The cold wave from the Himalayan region makes winter very chilly. Sometimes western disturbances occur and give significant amount of rain in this period. Mist and fog are generally experienced in i I N T R O D U C I N

the morning and late night hours. The mean maximum and minimum temperatures are around 23ºC and 7ºC respectively. In the month of March the weather is pleasant in Delhi where maximum and minimum temperatures are around 30ºC and 14ºC respectively. The summer season in Delhi practically starts from April and extends up to June. The weather is hot and dry and on few occasion heat wave prevails in this season. The mean maximum and minimum temperatures during this period are around 39ºC and 24ºC respectively. The monsoon season commences from last week of June and extends up to September. Average rainfall in the monsoon season is 699.0 mm which is 88% of average annual rainfall of 794.0 mm. Sometimes it rains heavily in Delhi in this season. The highest rainfall ever recorded in 24 hours is 265.8 mm on 9th July, 1972. The mean maximum and minimum temperatures in this season are around 35ºC and 25ºC respectively. During the months October and November weather is generally fair and pleasant in Delhi where mean maximum and minimum temperatures are around 31ºC and 15ºC respectively. In the month of December weather becomes cold and sometimes fog prevails in morning and late night. Sometimes western disturbances occur and give a good amount of rainfall. The maximum and minimum temperatures in this month are around 23ºC and 7ºC respectively. The highest maximum temperature and the lowest minimum temperature ever recorded at this airport are 47.5ºC on 26th May, 1984 and -2.2ºC on 1st January, 1952 respectively.

ii BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

FIGURES

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

FIG. 1(a) - NO. OF WEATHER PARAMETERS FIG. 1(b) - RELATIVE HUMIDITY FIG. 1(c) - AVERAGE MONTHLY RAINFALL

FIG. 2(a) - VISIBILITY - MORNING FIG. 2(b) - VISIBILITY - AFTERNOON

FIG. 3(a) - CLOUD AMOUNT - MORNING FIG. 3(b) - LOW CLOUD AMOUNT - MORNING FIG. 3(c) - HEIGHT OF LOW CLOUD - MORNING

FIG.4 (a) - CLOUD AMOUNT - AFTERNOON FIG.4 (b) - LOW CLOUD AMOUNT - AFTERNOON FIG.4 (c) - HEIGHT OF LOW CLOUD - AFTERNOON

FIG. 5 - WINDROSES - MORNING FIG. 6 - WINDROSES - AFTERNOON

FIG. 7(a) - MONTHLY MEAN TEMPERATURE FIG. 7(b) - HIGHEST MAXIMUM TEMPERATURE - EVER RECORDED FIG. 7(c) - LOWEST MINIMUM TEMPERATUER - EVER RECORDED

FIG.8-STATION LEVEL PRESSURE BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

OE A - MODEL

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH

APRIL MAY JUNE

JULY AUGUST SEPTEMBER

OCTOBER NOVEMBER DECEMBER M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34' N Longitude : 077° 07' E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 1.2 1.8 3.6 6.4 2.4 5.6 2.8 0.8 24.6 01 1.2 1.2 5.2 5.6 2.6 5.4 2.8 0.8 24.8 02 2.0 1.8 4.8 3.6 4.6 5.6 2.6 0.4 25.4 03 2.8 1.8 3.2 2.2 7.4 4.2 3.4 0.4 25.4 04 1.8 1.2 3.6 1.8 6.6 3.4 6.2 0.6 25.2 05 0.4 0.6 2.4 1.4 7.4 2.2 9.0 2.0 25.4 06 1.2 0.6 6.2 3.2 10.4 3.8 25.4 07 0.2 0.8 5.0 2.8 10.2 7.0 26.0 08 0.6 3.0 2.2 10.6 9.2 25.6 09 0.2 2.8 0.4 11.8 10.2 25.4 10 0.2 1.4 1.8 12.0 9.6 25.0 11 1.4 1.6 12.4 9.8 25.2 12 2.0 2.4 13.2 7.8 25.4 13 0.8 1.0 6.2 14.8 2.2 25.0 14 0.2 1.8 0.8 9.8 11.6 1.0 25.2 15 0.2 3.8 1.4 12.0 7.6 0.4 25.4 16 0.6 6.0 2.0 11.0 5.6 0.2 25.4 17 1.6 6.2 3.2 9.4 4.6 0.2 25.2 18 2.0 6.2 4.2 9.0 3.6 0.6 25.6 19 0.2 0.2 2.4 6.0 4.2 8.0 3.6 0.8 25.4 20 0.2 0.8 3.0 5.4 3.4 7.4 4.0 0.8 25.0 21 1.0 0.8 2.6 5.4 3.2 7.4 3.8 1.0 25.2 22 0.8 1.4 3.4 6.2 2.8 6.2 3.2 1.2 25.2 23 1.4 1.4 3.8 6.2 1.8 6.6 2.8 1.2 25.2

TOTAL 13.0 13.0 44.2 77.2 80.8 133.8 172.6 72.0 606.6

1 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 2.8 3.6 4.0 9.6 6.0 1.0 27.2 01 2.6 4.4 4.8 9.2 5.4 0.6 27.0 02 0.2 2.6 3.2 8.4 7.6 4.4 0.4 26.8 03 2.2 3.2 9.8 5.6 5.8 0.2 26.8 04 1.4 1.6 7.8 5.0 9.4 1.8 27.0 05 0.4 0.6 4.2 3.4 13.4 4.6 26.6 06 1.6 1.2 15.0 9.4 27.2 07 0.8 1.0 10.2 14.6 26.6 08 0.2 0.4 0.4 5.2 20.0 26.2 09 0.2 0.8 3.8 22.0 26.8 10 0.2 0.2 0.2 4.0 21.4 26.0 11 0.4 4.4 20.8 25.6 12 0.2 4.8 21.2 26.2 13 1.4 7.6 17.8 26.8 14 0.2 2.0 15.6 8.8 26.6 15 0.4 6.0 16.8 3.8 27.0 16 0.6 0.2 8.0 15.8 2.4 27.0 17 1.2 0.2 9.6 14.0 2.0 27.0 18 0.2 2.8 0.2 9.0 13.2 1.8 27.2 19 0.2 2.6 1.4 9.4 11.4 2.2 27.2 20 0.4 3.4 0.8 10.4 10.4 1.6 27.0 21 1.2 2.8 2.2 10.0 9.8 1.2 27.2 22 0.2 1.42.6 3.4 9.8 8.8 1.0 27.2 23 0.2 1.42.8 4.8 9.8 6.8 1.4 27.2

TOTAL 0.4 0.6 16.8 36.0 55.6 130.0 222.0 182.0 643.4

2 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 0.42.2 0.8 6.6 15.0 3.4 28.6 01 0.2 0.42.4 2.0 7.2 14.2 2.0 28.4 02 0.2 0.41.6 5.8 7.6 11.4 1.6 28.6 03 0.4 0.20.6 7.2 3.8 14.4 2.4 29.0 04 0.2 3.0 3.6 16.0 6.2 29.0 05 0.2 0.2 0.6 14.6 13.2 28.8 06 0.2 9.0 19.2 28.4 07 0.2 3.0 25.4 28.6 08 2.2 26.8 29.0 09 1.6 26.6 28.2 10 1.2 25.8 27.0 11 0.2 0.2 1.4 24.8 26.6 12 0.2 0.2 1.2 26.0 27.6 13 3.0 25.8 28.8 14 0.2 10.0 18.8 29.0 15 0.4 18.2 10.4 29.0 16 0.8 21.4 6.4 28.6 17 1.8 21.0 6.0 28.8 18 4.0 20.6 4.4 29.0 19 0.2 0.4 5.2 18.8 4.4 29.0 20 0.2 0.2 0.4 5.8 17.8 4.2 28.6 21 0.2 0.4 8.2 15.6 4.4 28.8 22 0.4 1.0 8.4 14.4 4.2 28.4 23 0.2 0.22.2 0.2 6.8 15.4 3.6 28.6

TOTAL 1.8 1.8 11.4 20.4 71.6 281.4 296.0 684.4

3 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 5.2 18.8 5.2 29.4 01 0.2 1.2 4.6 20.0 4.0 30.0 02 2.2 3.0 20.6 4.0 29.8 03 1.2 2.2 20.0 6.6 30.0 04 1.4 16.0 12.6 30.0 05 0.2 10.6 19.2 30.0 06 0.2 6.4 23.0 29.6 07 4.2 24.6 28.8 08 3.2 23.8 27.0 09 0.2 3.2 20.8 24.2 10 3.4 20.6 24.0 11 3.6 20.4 24.0 12 4.0 23.8 27.8 13 0.2 4.6 24.8 29.6 14 0.2 0.4 9.6 19.6 29.8 15 0.8 18.8 10.2 29.8 16 1.2 22.8 5.8 29.8 17 0.2 1.8 23.8 4.0 29.8 18 2.4 23.6 4.0 30.0 19 3.0 22.6 4.4 30.0 20 3.2 21.8 5.0 30.0 21 3.6 20.6 5.8 30.0 22 4.2 19.4 5.8 29.4 23 0.2 4.6 18.8 6.2 29.8

TOTAL 0.6 5.2 42.2 340.4 304.2 692.6

4 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 2.6 19.6 8.4 30.8 01 1.0 2.4 18.8 8.2 30.4 02 0.2 1.6 1.8 16.2 11.0 30.8 03 0.2 1.0 1.6 13.2 14.6 30.6 04 0.8 0.6 13.0 16.6 31.0 05 0.2 0.4 10.4 20.0 31.0 06 0.2 0.4 0.2 9.2 20.8 30.8 07 9.6 20.4 30.0 08 0.2 8.6 20.6 29.4 09 0.2 9.0 20.6 29.8 10 0.4 8.6 20.8 29.8 11 0.2 0.2 9.6 19.6 29.6 12 0.8 9.4 19.6 29.8 13 0.2 1.0 10.6 18.4 30.2 14 1.4 13.2 16.0 30.6 15 0.2 1.0 19.6 10.2 31.0 16 0.2 2.0 21.2 7.6 31.0 17 3.0 20.6 7.0 30.6 18 2.8 21.6 6.4 30.8 19 2.8 21.2 6.8 30.8 20 3.0 20.6 7.4 31.0 21 2.8 19.8 8.4 31.0 22 2.8 19.0 8.6 30.4 23 0.2 1.8 19.0 9.0 30.0

TOTAL 0.2 1.4 6.0 35.0 361.6 327.0 731.2

5 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 2.0 17.0 9.2 28.4 01 0.6 2.2 16.6 9.2 28.6 02 0.6 2.2 16.8 9.0 28.6 03 0.2 1.8 14.6 11.8 28.4 04 0.2 0.6 12.2 15.2 28.2 05 0.6 9.0 18.8 28.4 06 0.6 7.8 19.6 28.0 07 0.2 0.2 7.4 20.4 28.2 08 0.2 0.6 0.4 5.8 20.8 27.8 09 0.2 7.0 19.8 27.0 10 0.2 0.2 0.2 5.8 21.0 27.4 11 0.4 0.4 5.4 21.4 27.6 12 0.2 0.6 6.0 21.4 28.2 13 0.2 0.4 6.6 21.4 28.6 14 0.2 0.6 8.2 19.2 28.2 15 0.2 0.6 11.2 16.0 28.0 16 0.6 13.0 14.4 28.0 17 0.6 15.2 12.4 28.2 18 0.6 15.0 13.0 28.6 19 0.6 15.6 12.0 28.2 20 0.6 15.4 11.8 27.8 21 0.2 0.8 14.4 12.8 28.2 22 0.2 1.0 15.6 11.2 28.0 23 0.2 1.2 15.6 10.8 27.8

TOTAL 0.4 1.0 3.6 19.6 277.2 372.6 674.4

6 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 1.2 15.2 14.6 31.2 01 0.4 1.6 14.8 13.8 30.6 02 0.4 1.8 14.0 14.6 30.8 03 0.2 0.8 14.2 16.0 31.2 04 0.2 0.2 11.4 19.4 31.2 05 0.2 0.2 8.6 22.0 31.0 06 0.4 7.6 22.8 30.8 07 0.2 7.0 23.0 30.2 08 0.2 0.2 5.6 24.2 30.2 09 0.2 6.0 24.0 30.2 10 0.2 0.4 0.2 6.4 23.4 30.6 11 0.2 7.8 22.6 30.6 12 0.2 8.2 22.2 30.6 13 0.2 8.8 21.6 30.6 14 0.2 10.4 20.2 30.8 15 12.6 17.8 30.4 16 0.2 14.6 16.2 31.0 17 15.8 15.0 30.8 18 17.0 14.0 31.0 19 15.4 15.4 30.8 20 0.2 16.2 14.6 31.0 21 0.4 15.2 15.0 30.6 22 1.0 14.6 15.2 30.8 23 0.2 1.4 14.0 15.4 31.0

TOTAL 0.2 0.4 3.0 10.0 281.4 443.0 738.0

7 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 1.2 12.0 12.4 25.6 01 0.2 1.2 12.4 11.6 25.4 02 0.2 1.2 10.2 13.8 25.4 03 0.2 0.6 10.0 15.0 25.8 04 0.4 8.4 16.8 25.6 05 0.2 0.2 6.4 18.8 25.6 06 0.4 5.4 19.6 25.4 07 0.2 4.8 20.2 25.2 08 0.4 3.0 21.8 25.2 09 0.2 0.2 0.2 3.6 21.6 25.8 10 0.8 4.0 21.2 26.0 11 0.4 0.4 4.0 21.2 26.0 12 0.2 4.4 21.2 25.8 13 0.2 5.8 20.0 26.0 14 0.2 0.6 8.2 17.0 26.0 15 0.2 0.4 9.8 15.6 26.0 16 0.8 10.6 14.6 26.0 17 0.2 0.4 11.4 14.0 26.0 18 0.2 0.6 12.0 13.0 25.8 19 0.6 12.8 12.4 25.8 20 0.4 12.8 12.8 26.0 21 0.6 11.4 13.6 25.6 22 1.0 11.2 13.4 25.6 23 0.8 11.6 13.4 25.8

TOTAL 1.0 1.6 13.6 206.2 395.0 617.4

8 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.2 1.8 17.6 10.2 29.8 01 0.4 1.8 18.0 9.2 29.4 02 0.4 3.0 15.4 11.0 29.8 03 1.8 14.6 13.4 29.8 04 0.2 0.8 11.6 17.4 30.0 05 0.2 0.6 8.6 20.6 30.0 06 0.4 5.8 23.6 29.8 07 0.6 4.0 25.2 29.8 08 0.6 4.4 25.0 30.0 09 0.2 0.4 4.0 24.8 29.4 10 0.4 3.4 25.8 29.6 11 0.2 4.0 25.6 29.8 12 4.8 25.4 30.2 13 8.0 22.0 30.0 14 0.4 13.0 16.6 30.0 15 0.4 13.4 15.4 29.2 16 0.8 14.0 14.4 29.2 17 0.4 16.4 12.6 29.4 18 0.2 1.0 16.4 12.2 29.8 19 2.0 16.0 11.8 29.8 20 1.6 16.0 11.8 29.4 21 2.0 15.8 12.0 29.8 22 0.4 1.6 15.8 11.6 29.4 23 0.4 1.8 16.4 11.0 29.6

TOTAL 1.4 1.2 24.4 277.4 408.6 713.0

9 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 2.0 0.4 9.4 17.8 1.4 31.0 01 1.8 0.6 9.2 18.4 0.8 30.8 02 0.2 3.6 8.8 17.0 0.6 30.2 03 0.6 4.8 5.6 18.4 1.6 31.0 04 0.2 2.0 3.6 21.0 4.2 31.0 05 0.2 1.2 2.6 17.4 9.6 31.0 06 0.8 1.4 14.0 15.0 31.2 07 0.2 0.8 11.2 18.0 30.2 08 0.6 8.8 21.2 30.6 09 0.2 0.2 7.4 23.4 31.2 10 0.2 0.4 6.4 24.0 31.0 11 0.4 7.4 23.4 31.2 12 0.6 12.0 18.2 30.8 13 1.4 20.2 9.2 30.8 14 4.0 22.6 4.4 31.0 15 9.6 18.8 2.8 31.2 16 0.2 12.2 16.2 2.4 31.0 17 1.4 13.8 14.2 1.8 31.2 18 1.4 0.2 15.4 12.4 1.6 31.0 19 1.2 0.2 15.0 12.8 1.6 30.8 20 1.8 0.2 13.6 13.0 1.8 30.4 21 1.4 0.2 12.6 14.6 1.8 30.6 22 1.8 0.2 11.4 16.0 1.6 31.0 23 1.8 0.4 11.2 16.4 1.2 31.0

TOTAL 16.0 15.4 163.8 354.4 191.6 741.2

10 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.4 3.4 1.2 14.4 10.2 0.2 29.8 01 3.6 1.6 13.0 11.4 29.6 02 0.2 1.8 6.4 11.6 9.6 0.2 29.8 03 0.2 0.2 9.6 7.2 11.6 1.2 30.0 04 0.2 0.2 6.2 4.2 17.4 1.8 30.0 05 0.2 3.4 4.4 17.4 4.6 30.0 06 1.6 3.4 16.0 9.0 30.0 07 1.0 0.8 15.2 13.0 30.0 08 0.4 10.8 18.8 30.0 09 0.4 7.8 21.8 30.0 10 0.6 6.4 23.0 30.0 11 0.6 0.8 7.2 21.0 29.6 12 2.0 14.8 13.0 29.8 13 0.4 3.6 22.4 3.4 29.8 14 0.4 8.4 20.0 1.0 29.8 15 0.8 0.4 14.6 13.6 0.2 29.6 16 2.0 0.4 18.4 9.0 29.8 17 3.4 0.4 18.0 8.0 0.2 30.0 18 4.2 1.0 17.2 7.2 0.2 29.8 19 0.2 5.2 0.8 15.6 7.8 0.2 29.8 20 0.2 5.2 0.8 15.4 8.2 0.2 30.0 21 4.6 1.2 15.4 8.8 30.0 22 0.2 4.8 1.0 14.8 9.2 30.0 23 0.2 4.6 1.2 13.4 10.2 0.2 29.8

TOTAL 0.2 1.6 45.0 38.8 218.0 280.2 133.2 717.0

11 M O D E L - A

CLIMATOLOGICAL SUMMARY

MODEL – A

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky, below specified values at specified times.

RVR OR VIS / HS VIS / HS TIME <100 <200 <400 <800 <1500 <1500 <3000 <8000 (UTC) - - <30 <60 <90 <150 <300 <600 TOTAL

00 0.8 3.6 6.8 5.6 10.0 3.4 30.2 01 0.8 3.8 8.0 4.8 9.2 3.8 30.4 02 1.0 0.2 4.4 3.2 10.0 8.2 3.4 30.4 03 0.6 0.4 4.0 3.2 12.6 5.8 4.2 30.8 04 0.2 0.6 3.4 1.2 12.0 5.0 7.2 0.6 30.2 05 0.2 0.4 2.4 1.0 10.0 4.0 10.8 1.8 30.6 06 0.4 0.61.2 7.0 4.4 13.0 4.0 30.6 07 0.2 0.20.6 5.2 3.8 13.8 6.8 30.6 08 0.4 4.0 2.8 13.8 9.6 30.6 09 0.2 3.2 2.0 12.8 12.4 30.6 10 0.4 2.8 2.2 12.0 13.4 30.8 11 0.2 3.0 3.0 12.6 11.8 30.6 12 1.0 1.4 5.6 16.0 6.6 30.6 13 2.8 1.4 7.6 17.8 1.2 30.8 14 0.4 2.2 3.6 11.2 13.0 0.2 30.6 15 0.8 3.8 3.4 15.4 7.2 0.2 30.8 16 1.8 6.0 3.0 14.8 5.4 0.2 31.2 17 2.2 7.4 3.2 13.8 4.2 0.2 31.0 18 0.2 0.2 2.6 6.8 3.8 13.8 3.4 0.2 31.0 19 0.2 2.27.2 4.6 14.0 2.6 30.8 20 0.2 3.27.0 5.2 12.0 3.2 30.8 21 0.2 0.4 3.6 8.0 4.2 11.4 3.0 30.8 22 0.2 4.68.0 5.0 10.2 2.8 30.8 23 0.4 0.2 4.2 7.0 5.8 10.4 2.8 30.8

TOTAL 4.4 3.8 48.0 93.4 124.8 200.6 192.2 69.2 736.4

12 BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

Rain 2 2.4 2.4 1.8 2.5 5.6 14 14 7 2 0.7 1.2 Thunder 1.3 1.8 2.8 2.9 5.5 5.5 8.8 7.3 3.7 1.4 0.5 0.7 Dust Storm 0 0.2 0.4 1.5 3.5 3.4 0.8 0 0 0.2 0 0.3 Hail 0.100.20.3000.100000.1 Fog 3 1.2 0.2 0 0.1 0 0.1 0 0.1 0.2 0.4 3.3 Squall 0 0 0.4 0.5 0.9 1.4 0.5 0.4 0.2 0.4 0 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Fig. 1 (a) Number of days of weather parameters

100

80

60

% 40

20

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

morning (0300 UTC) afternoon (1200 UTC)

Fig. 1(b) Relative Humidity (percentage)

300 284.3

250 241.1

200

150 119.4

milimeters 100 54.2 50 18.9 16.8 14.8 14.1 9.3 6.1 6.4 8.6 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Fig. 1(c) Average Monthly Rainfall (mm) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

OE B - MODEL

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH

APRIL MAY JUNE

JULY AUGUST SEPTEMBER

OCTOBER NOVEMBER DECEMBER M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 6.8 2.2 2.4 4.0 5.8 2.8 0.6 24.6 01 7.4 2.8 2.4 3.2 5.6 2.8 0.6 24.8 02 9.4 2.0 2.6 2.0 6.4 2.6 0.2 25.2 03 8.8 1.4 1.2 2.8 7.4 3.4 0.2 25.2 04 6.8 1.2 1.6 1.6 7.0 6.4 0.6 25.2 05 3.6 1.0 2.0 2.4 5.0 9.4 1.8 0.2 25.4 06 1.2 0.4 0.6 3.0 5.8 10.2 3.4 0.2 24.8 07 0.2 0.2 0.8 1.2 6.2 10.2 5.4 1.2 25.4 08 0.4 0.40.4 4.4 10.6 7.2 2.0 25.4 09 0.2 0.40.6 2.2 11.8 8.0 2.2 25.4 10 0.4 0.6 2.4 12.0 7.6 2.0 25.0 11 0.2 0.2 2.6 12.4 8.2 1.6 25.2 12 0.4 0.8 3.0 13.4 7.0 0.8 25.4 13 1.2 0.6 6.2 14.8 2.2 25.0 14 0.2 0.6 0.6 1.2 9.8 11.6 1.2 25.2 15 0.4 0.6 1.8 2.4 12.2 7.6 0.2 0.2 25.4 16 0.6 1.2 2.8 3.6 11.4 5.6 0.2 25.4 17 1.6 2.2 1.6 5.6 9.6 4.6 0.2 25.4 18 2.2 2.4 2.8 5.0 9.0 3.6 0.4 25.4 19 3.8 2.0 3.6 3.6 8.0 3.6 0.6 25.2 20 4.4 1.6 3.6 3.0 7.4 4.2 0.6 24.8 21 5.4 1.6 3.2 2.6 7.4 4.0 0.8 25.0 22 6.2 2.2 2.8 3.2 6.2 3.4 1.0 25.0 23 6.2 2.4 1.8 4.2 6.6 2.8 0.8 24.8

TOTAL 75.2 28.6 41.2 57.8 157.6 173.8 59.0 10.4 603.6

13 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 2.8 3.2 1.8 2.8 9.6 5.8 1.0 27.0 01 3.4 2.6 2.8 3.0 9.2 5.2 0.6 26.8 02 3.6 2.6 2.8 3.0 9.6 4.6 0.2 0.2 26.6 03 2.6 1.8 2.2 4.0 10.2 5.8 26.6 04 0.6 1.4 1.2 2.2 10.2 9.6 1.6 26.8 05 0.2 0.4 1.0 0.6 6.4 13.4 4.6 26.6 06 0.2 0.6 2.0 15.0 8.2 1.2 27.2 07 0.2 1.6 10.2 11.6 3.0 26.6 08 0.2 0.8 5.2 13.2 6.8 26.2 09 0.2 0.8 3.8 12.4 9.6 26.8 10 0.4 0.2 4.0 10.8 10.6 26.0 11 0.4 4.4 11.2 9.6 25.6 12 0.2 4.8 13.8 7.4 26.2 13 1.4 7.6 15.4 2.4 26.8 14 2.2 15.6 8.8 26.6 15 0.2 0.2 6.0 16.8 3.8 27.0 16 0.2 0.6 8.0 15.8 2.4 27.0 17 0.2 1.2 9.6 14.0 2.0 27.0 18 0.2 0.6 2.4 9.0 13.2 1.6 0.2 27.2 19 0.2 1.0 1.0 2.0 9.4 11.4 2.0 0.2 27.2 20 0.6 0.6 1.4 2.0 10.4 10.4 1.4 0.2 27.0 21 1.4 0.4 2.0 2.4 10.0 9.8 1.0 27.0 22 1.4 1.0 3.2 1.8 10.0 8.8 1.0 27.2 23 1.8 2.8 2.6 1.6 10.0 6.8 1.4 27.0

TOTAL 19.0 18.0 23.6 30.8 147.2 222.0 130.0 51.4 642.0

14 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.6 0.2 1.4 1.4 6.6 15.0 3.4 28.6 01 0.6 0.4 0.8 2.6 7.8 14.2 2.0 28.4 02 0.6 0.6 1.0 3.0 10.4 11.4 1.6 28.6 03 0.4 0.4 0.6 2.2 8.6 14.4 2.4 29.0 04 0.2 0.8 5.8 16.0 6.2 29.0 05 0.2 0.8 14.6 12.8 0.4 28.8 06 0.2 9.0 16.4 2.8 28.4 07 0.2 3.0 18.4 7.0 28.6 08 2.2 12.0 14.8 29.0 09 1.6 8.2 18.4 28.2 10 1.2 7.6 18.2 27.0 11 0.2 0.2 1.4 7.0 17.8 26.6 12 0.2 0.2 1.2 10.4 15.6 27.6 13 3.0 18.6 7.2 28.8 14 0.2 10.0 18.6 0.2 29.0 15 0.4 18.2 10.4 29.0 16 0.8 21.4 6.4 28.6 17 1.8 21.0 6.0 28.8 18 4.0 20.6 4.4 29.0 19 0.2 0.2 5.4 18.8 4.4 29.0 20 0.2 0.2 6.0 18.0 4.2 28.6 21 0.2 0.4 8.2 15.6 4.2 0.2 28.8 22 0.4 0.2 0.8 8.4 14.4 4.0 0.2 28.4 23 0.4 0.2 0.2 2.0 6.8 15.4 3.4 0.2 28.6

TOTAL 3.2 2.0 5.4 13.6 82.6 281.6 193.0 103.0 684.4

15 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.2 5.2 18.8 5.2 29.4 01 0.2 5.8 20.0 4.0 30.0 02 0.2 4.8 20.8 3.8 0.2 29.8 03 3.4 20.0 6.2 0.4 30.0 04 1.4 16.0 11.8 0.8 30.0 05 0.2 10.6 17.8 1.4 30.0 06 0.2 6.4 17.2 5.8 29.6 07 4.2 15.0 9.6 28.8 08 3.2 11.2 12.6 27.0 09 0.2 3.2 7.2 13.6 24.2 10 3.4 6.2 14.4 24.0 11 3.6 6.2 14.2 24.0 12 4.0 7.6 16.2 27.8 13 0.2 4.6 14.0 10.8 29.6 14 0.2 0.4 9.6 18.8 0.8 29.8 15 0.8 18.8 10.2 29.8 16 1.2 22.8 5.8 29.8 17 0.2 1.8 23.8 4.0 29.8 18 2.4 23.6 4.0 30.0 19 3.0 22.6 4.4 30.0 20 3.2 21.8 5.0 30.0 21 3.6 20.6 5.8 30.0 22 4.2 19.4 5.8 29.4 23 4.8 18.8 6.2 29.8

TOTAL 0.2 0.4 0.6 46.6 340.6 203.4 100.8 692.6

16 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.2 2.6 19.6 8.2 0.2 30.8 01 0.4 3.0 18.8 7.8 0.4 30.4 02 0.2 0.4 3.0 16.2 10.2 0.6 30.6 03 0.2 0.2 2.4 13.2 13.4 1.2 30.6 04 1.4 13.0 14.4 2.2 31.0 05 0.2 0.4 10.4 15.2 4.8 31.0 06 0.2 0.4 9.4 13.8 7.0 30.8 07 9.6 12.2 8.2 30.0 08 0.2 8.6 10.6 10.0 29.4 09 0.2 0.2 9.0 10.0 10.6 30.0 10 0.4 8.6 10.0 10.8 29.8 11 0.4 9.6 9.0 10.6 29.6 12 0.8 9.4 10.8 8.8 29.8 13 0.2 1.0 10.6 12.0 6.4 30.2 14 1.4 13.2 14.2 1.8 30.6 15 0.2 1.0 19.6 10.0 0.2 31.0 16 0.2 2.0 21.2 7.6 31.0 17 3.0 20.6 7.0 30.6 18 2.8 21.6 6.4 30.8 19 2.8 21.2 6.6 0.2 30.8 20 3.0 20.6 7.0 0.4 31.0 21 2.8 19.8 8.0 0.4 31.0 22 2.8 19.0 8.6 30.4 23 0.2 1.8 19.0 9.0 30.0

TOTAL 0.2 0.4 0.4 2.0 39.6 361.8 242.0 84.8 731.2

17 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in mertes) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 2.2 17.0 9.2 28.4 01 0.2 2.6 16.6 9.2 28.6 02 2.8 16.8 8.8 0.2 28.6 03 0.2 1.8 14.6 11.4 0.4 28.4 04 0.2 0.6 12.2 14.6 0.6 28.2 05 0.6 9.0 16.8 2.0 28.4 06 0.6 7.8 15.8 3.8 28.0 07 0.2 0.2 7.4 15.2 5.2 28.2 08 0.2 0.8 6.0 14.4 6.4 27.8 09 0.2 7.0 13.4 6.4 27.0 10 0.2 0.4 5.8 13.8 7.2 27.4 11 0.8 5.4 15.0 6.4 27.6 12 0.8 6.0 14.8 6.6 28.2 13 0.6 6.6 16.4 5.0 28.6 14 0.8 8.2 16.8 2.4 28.2 15 0.2 0.6 11.2 16.0 28.0 16 0.6 13.0 14.4 28.0 17 0.6 15.2 12.4 28.2 18 0.6 15.0 13.0 28.6 19 0.6 15.6 12.0 28.2 20 0.6 15.4 11.8 27.8 21 0.2 0.8 14.4 12.8 28.2 22 0.2 1.0 15.6 11.2 28.0 23 0.2 1.2 15.6 10.8 27.8

TOTAL 0.2 0.2 0.8 0.8 22.4 277.4 320.0 52.6 674.4

18 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.2 1.2 15.2 14.4 31.0 01 2.0 14.8 13.6 30.4 02 2.2 14.0 14.0 0.4 30.6 03 0.2 0.8 14.2 14.6 1.2 31.0 04 0.2 11.6 17.0 2.0 30.8 05 0.2 0.2 8.6 17.6 4.0 30.6 06 0.4 7.6 16.2 6.4 30.6 07 0.2 7.0 16.8 6.2 30.2 08 0.4 5.6 16.8 7.4 30.2 09 0.2 6.0 14.4 9.4 30.0 10 0.2 0.4 6.6 15.0 8.2 30.4 11 7.8 14.6 8.2 30.6 12 0.2 8.2 15.6 6.4 30.4 13 0.2 8.8 16.8 4.8 30.6 14 0.2 10.4 18.0 2.2 30.8 15 12.6 17.2 0.6 30.4 16 0.2 14.6 16.0 0.2 31.0 17 15.8 14.8 0.2 30.8 18 17.0 13.8 0.2 31.0 19 15.4 15.4 30.8 20 0.2 16.2 14.4 0.2 31.0 21 0.4 15.2 14.8 0.2 30.6 22 1.0 14.6 15.0 0.2 30.8 23 1.6 14.0 15.4 31.0

TOTAL 0.4 0.8 11.8 281.8 372.2 68.6 735.6

19 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 1.2 12.0 12.4 25.6 01 1.2 12.4 11.4 0.2 25.2 02 0.2 1.2 10.2 12.8 0.8 25.2 03 0.8 10.0 14.2 0.8 25.8 04 0.4 8.4 14.4 2.4 25.6 05 0.4 6.4 14.4 4.4 25.6 06 0.4 5.4 13.0 6.6 25.4 07 0.2 4.8 10.8 9.4 25.2 08 0.4 3.0 10.2 11.6 25.2 09 0.2 0.4 3.6 10.0 11.6 25.8 10 0.8 4.0 9.6 11.6 26.0 11 0.2 0.6 4.0 10.8 10.4 26.0 12 0.2 4.4 12.2 9.0 25.8 13 0.2 5.8 16.6 3.4 26.0 14 0.8 8.2 16.0 1.0 26.0 15 0.2 0.4 9.8 15.6 26.0 16 0.8 10.6 14.6 26.0 17 0.2 0.4 11.4 14.0 26.0 18 0.2 0.6 12.0 13.0 25.8 19 0.6 12.6 12.4 25.6 20 0.4 12.8 12.8 26.0 21 0.6 11.4 13.6 25.6 22 1.0 11.2 13.4 25.6 23 0.8 11.6 13.4 25.8

TOTAL 0.2 0.2 0.8 14.8 206.0 311.6 83.2 616.8

20 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.2 1.8 17.6 10.2 29.8 01 0.4 1.8 18.0 9.2 29.4 02 3.4 15.4 10.8 29.6 03 1.8 14.6 13.2 29.6 04 1.0 11.6 15.6 1.4 29.6 05 0.8 8.6 16.0 4.4 29.8 06 0.4 5.8 17.6 5.8 29.6 07 0.6 4.0 15.2 9.8 29.6 08 0.2 0.6 4.2 13.0 11.6 29.6 09 0.6 4.0 12.6 12.0 29.2 10 0.4 3.4 13.6 11.8 29.2 11 0.2 4.0 14.2 11.0 29.4 12 4.8 16.2 8.8 29.8 13 8.0 19.4 2.4 29.8 14 0.4 13.0 16.2 0.2 29.8 15 0.4 13.4 15.2 29.0 16 0.8 14.0 14.2 29.0 17 0.4 16.4 12.4 29.2 18 1.0 16.6 12.0 29.6 19 2.0 16.0 11.8 29.8 20 1.6 16.0 11.8 29.4 21 2.0 15.8 12.0 29.8 22 0.4 1.6 15.8 11.6 29.4 23 0.2 0.2 1.8 16.4 11.0 29.6

TOTAL 0.2 0.2 1.2 25.4 277.4 325.0 79.2 708.6

21 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 2.0 9.6 18.0 1.4 31.0 01 0.2 2.0 9.4 18.4 0.8 30.8 02 0.8 11.6 17.0 0.8 30.2 03 0.6 1.2 9.0 18.6 1.6 31.0 04 0.6 5.0 21.0 4.0 0.2 30.8 05 0.4 3.4 17.6 9.4 0.2 31.0 06 2.2 13.8 14.4 0.6 31.0 07 1.0 11.0 16.4 1.6 30.0 08 0.6 8.6 18.4 2.8 30.4 09 0.4 7.2 17.4 6.0 31.0 10 0.6 6.2 16.4 7.6 30.8 11 0.4 7.2 17.2 6.0 30.8 12 0.6 12.0 15.8 2.4 30.8 13 1.4 20.2 9.0 0.2 30.8 14 4.0 22.6 4.2 0.2 31.0 15 9.6 18.8 2.6 31.0 16 0.2 12.2 16.2 2.2 30.8 17 0.2 1.2 13.8 14.2 1.6 31.0 18 0.2 1.4 15.4 12.4 1.6 31.0 19 0.2 1.2 15.0 12.8 1.6 30.8 20 1.6 13.8 13.2 1.8 30.4 21 1.4 12.8 14.6 1.8 30.6 22 1.8 11.6 16.0 1.6 31.0 23 1.8 11.4 16.6 1.2 31.0

TOTAL 1.4 17.6 174.8 354.2 163.2 27.8 739.0

22 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 0.4 0.2 1.0 3.4 14.4 10.2 0.2 29.8 01 0.2 0.4 1.2 3.4 13.0 11.4 29.6 02 0.2 0.4 1.4 2.8 15.2 9.6 0.2 29.8 03 0.2 0.2 0.8 2.2 13.6 11.6 1.2 29.8 04 0.4 0.60.8 8.8 17.6 1.8 30.0 05 0.4 0.6 7.0 17.4 4.6 30.0 06 0.4 4.4 16.2 9.0 30.0 07 1.8 15.2 12.0 1.0 30.0 08 0.4 10.8 15.0 3.8 30.0 09 0.4 7.8 16.2 5.6 30.0 10 0.6 6.4 16.4 6.6 30.0 11 1.2 7.4 16.6 4.4 29.6 12 2.0 14.8 12.6 0.4 29.8 13 0.4 3.6 22.4 3.4 29.8 14 0.2 0.2 8.4 20.0 1.0 29.8 15 0.2 0.20.8 14.6 13.6 0.2 29.6 16 0.2 0.61.6 18.4 9.0 29.8 17 0.2 1.02.6 18.0 8.0 0.2 30.0 18 0.2 1.23.6 17.4 7.2 0.2 29.8 19 0.2 1.24.6 15.8 7.8 0.2 29.8 20 0.4 0.84.8 15.6 8.2 0.2 30.0 21 0.2 0.4 0.8 4.2 15.6 8.8 30.0 22 0.2 0.4 1.4 4.0 14.8 9.2 30.0 23 0.2 0.4 2.0 3.4 13.4 10.2 0.2 29.8

TOTAL 1.6 4.2 14.8 43.8 238.4 280.8 111.4 21.8 716.8

23 M O D E L - B

CLIMATOLOGICAL SUMMARY

MODEL – B

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of visibility below specified values (in metres) at the specified times.

VISIBILITY TIME (UTC) <200 <400 <600 <800 <1500 <3000 <5000 <8000 TOTAL

00 5.2 1.8 4.2 5.4 10.0 3.4 0.2 30.2 01 5.6 1.8 4.2 5.8 9.2 3.8 30.4 02 5.6 3.0 3.8 5.4 9.2 3.4 30.4 03 4.6 2.6 4.4 6.2 8.8 4.2 30.8 04 4.2 0.4 2.2 4.8 10.8 7.2 0.6 30.2 05 3.6 0.4 3.4 10.6 10.8 1.8 30.6 06 0.8 1.4 0.4 1.4 9.6 13.0 4.0 30.6 07 0.6 0.8 1.4 7.0 14.0 6.8 30.6 08 0.4 0.40.2 6.0 14.0 9.4 0.2 30.6 09 0.2 1.0 4.2 12.8 11.6 0.8 30.6 10 0.2 0.4 4.4 12.2 11.6 1.8 30.6 11 1.0 5.2 12.6 10.6 1.2 30.6 12 0.4 1.4 6.2 15.8 6.6 30.4 13 0.4 1.42.4 7.6 17.8 1.2 30.8 14 0.6 1.4 2.2 1.6 11.6 13.0 0.2 30.6 15 1.4 1.6 2.4 2.4 15.6 7.2 0.2 30.8 16 2.2 1.4 2.8 4.4 14.8 5.2 0.2 31.0 17 2.4 2.6 2.2 5.6 13.8 4.2 0.2 31.0 18 3.6 1.8 2.8 5.2 14.0 3.4 0.2 31.0 19 4.0 1.8 3.2 5.2 14.0 2.6 30.8 20 4.4 2.4 3.6 5.0 12.2 3.2 30.8 21 4.8 1.8 3.2 6.6 11.4 3.0 30.8 22 5.0 1.6 5.2 6.0 10.2 2.8 30.8 23 5.2 1.8 5.0 5.6 10.4 2.8 30.8

TOTAL 63.8 30.2 55.4 87.8 236.8 192.4 65.4 4.0 735.8

24 BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

100%

80%

60%

40%

20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

upto 1 km 1-4 km 4-10 km 10-20 km over 20 km

Fig. 2 (a) Visibility – Morning (0300 UTC)

100%

80%

60%

40%

20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

upto 1 km 1-4 km 4-10 km 10-20 km over 20 km

Fig. 2 (b) Visibility – Afternoon (1200 UTC) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

OE C - MODEL

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH

APRIL MAY JUNE

JULY AUGUST SEPTEMBER

OCTOBER NOVEMBER DECEMBER M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 0.2 0.2 01 0.2 0.2 02 0.2 0.2 03 0.2 0.2 04 05 06 0.2 0.2 0.4 07 0.2 0.2 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0.2 0.2

TOTAL 0.4 1.2 1.6

25 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 0.2 0.2 01 0.2 0.2 02 0.2 0.2 03 0.2 0.2 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 0.2 0.2 22 23 0.2 0.2

TOTAL 0.6 0.6 1.2

26 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

TOTAL

27 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

TOTAL

28 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

TOTAL

29 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

TOTAL

30 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 0.2 0.2 05 0.2 0.2 06 07 08 09 10 11 12 0.2 0.2 13 14 15 16 17 18 19 20 21 22 23

TOTAL 0.6 0.6

31 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 0.2 0.2 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 0.2 0.2 20 21 22 23

TOTAL 0.2 0.2 0.4

32 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 0.2 0.2 05 0.2 0.2 06 0.2 0.2 07 08 0.2 0.2 09 10 0.2 0.2 11 0.2 0.2 12 0.2 0.2 13 0.2 0.2 14 0.2 0.2 15 0.2 0.2 16 0.2 0.2 17 0.2 0.2 18 0.2 0.2 19 20 21 22 23

TOTAL 0.2 2.4 2.6

33 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 0.2 0.2 07 0.2 0.2 08 0.2 0.2 09 0.2 0.2 10 0.2 0.2 11 0.2 0.2 0.4 12 13 14 15 0.2 0.2 16 0.2 0.2 17 0.2 0.2 18 19 20 21 22 23

TOTAL 1.2 0.8 2.0

34 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

TOTAL

35 M O D E L - C

CLIMATOLOGICAL SUMMARY

MODEL – C

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.

HS TIME (UTC) <30 <60 <90 <150 <300 <450 TOTAL

00 01 02 03 04 05 06 07 08 09 10 0.2 0.2 11 12 0.2 0.2 13 14 15 16 0.2 0.2 17 18 19 20 21 22 23

TOTAL 0.6 0.6

36 BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

100%

80%

60%

40%

20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

clear sky 1-2 okta 3-5 okta 6-7 okta overcast

Fig. 3 (a) Cloud Amount – Morning (0300 UTC)

100%

80%

60%

40%

20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

clear sky 1-2 okta 3-5 okta 6-7 okta overcast

Fig. 3 (b) Low Cloud Amount – Morning (0300 UTC)

100% 80% 60% 40% 20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

<300 meters 300-600 600-900 900-1500 1500-1950 1950-2400 >2400 meters

Fig. 3 (c) Height of Low Cloud – Morning (0300 UTC) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

100%

80%

60%

40%

20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

clear sky 1-2 okta 3-5 okta 6-7 okta overcast

Fig. 4 (a) Cloud Amount – Afternoon (1200 UTC)

100%

80%

60%

40%

20%

123456789101112

clear sky 1-2 okta 3-5 okta 6-7 okta overcast

Fig. 4 (b) Low Cloud Amount – Afternoon (1200 UTC)

100% 80% 60% 40% 20%

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

<300 meters 300-600 600-900 900-1500 1500-1950 1950-2400 >2400 meters

Fig. 4 (c) Height of Low Cloud – Afternoon (1200 UTC) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

OE D - MODEL

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 03 UTC 15 UTC 03 UTC 15 UTC 03 UTC 15 UTC 06 UTC 18 UTC 06 UTC 18 UTC 06 UTC 18 UTC 09 UTC 21 UTC 09 UTC 21 UTC 09 UTC 21 UTC APRIL MAY JUNE 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 03 UTC 15 UTC 03 UTC 15 UTC 03 UTC 15 UTC 06 UTC 18 UTC 06 UTC 18 UTC 06 UTC 18 UTC 09 UTC 21 UTC 09 UTC 21 UTC 09 UTC 21 UTC

JULY AUGUST SEPTEMBER 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 03 UTC 15 UTC 03 UTC 15 UTC 03 UTC 15 UTC 06 UTC 18 UTC 06 UTC 18 UTC 06 UTC 18 UTC 09 UTC 21 UTC 09 UTC 21 UTC 09 UTC 21 UTC OCTOBER NOVEMBER DECEMBER 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 03 UTC 15 UTC 03 UTC 15 UTC 03 UTC 15 UTC 06 UTC 18 UTC 06 UTC 18 UTC 06 UTC 18 UTC 09 UTC 21 UTC 09 UTC 21 UTC 09 UTC 21 UTC M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 13.0 13.0 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.6 0.6 08-09-10 1.4 0.6 2.0 11-12-13 0.4 0.2 0.2 0.8 14-15-16 17-18-19 20-21-22 23-24-25 1.8 1.8 26-27-28 3.0 0.8 0.2 4.0 29-30-31 0.8 0.6 1.4 32-33-34 0.4 0.2 0.6

TOTAL 13.0 8.8 2.4 0.4 24.6

37 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 8.4 8.4 Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.6 0.6 08-09-10 0.8 0.4 1.2 11-12-13 1.0 1.0 2.0 14-15-16 0.4 0.4 17-18-19 0.2 0.2 20-21-22 0.6 0.2 0.8 23-24-25 3.0 0.6 3.6 26-27-28 3.0 2.4 5.4 29-30-31 1.4 1.0 2.4 32-33-34

TOTAL 8.4 11.2 5.4 0.2 25.2

38 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.4 2.4 Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 0.6 0.6 1.2 11-12-13 0.6 1.0 0.4 2.0 14-15-16 0.4 0.8 1.2 17-18-19 0.4 0.4 0.8 20-21-22 0.4 0.4 23-24-25 1.4 0.4 1.8 26-27-28 3.6 3.0 6.6 29-30-31 2.4 3.0 1.0 6.4 32-33-34 0.2 0.8 1.0

TOTAL 2.4 10.8 10.2 1.4 24.8

39 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.2 0.2 0.4 05-06-07 08-09-10 0.6 0.6 1.2 11-12-13 1.0 0.4 0.2 1.6 14-15-16 0.2 0.4 0.2 0.8 17-18-19 1.0 0.2 1.2 20-21-22 0.4 0.4 23-24-25 0.2 0.4 0.6 26-27-28 2.0 2.8 0.2 5.0 29-30-31 3.0 4.8 1.40.2 9.4 32-33-34 1.8 1.8 3.6

TOTAL 0.6 10.8 11.6 2.20.2 25.4

40 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.6 2.6 Variable 35-36-01 0.4 0.4 02-03-04 0.6 0.6 05-06-07 0.4 0.4 08-09-10 1.8 0.4 2.2 11-12-13 0.4 0.4 0.8 14-15-16 0.4 0.4 17-18-19 20-21-22 23-24-25 0.8 0.8 26-27-28 3.0 1.0 0.2 4.2 29-30-31 5.8 4.6 0.6 11.0 32-33-34 1.4 0.6 2.0

TOTAL 2.6 15.0 7.0 0.8 25.4

41 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 12.4 12.4 Variable 35-36-01 0.6 0.6 02-03-04 0.6 0.6 05-06-07 08-09-10 1.6 0.4 2.0 11-12-13 0.4 0.4 0.2 1.0 14-15-16 0.4 0.4 17-18-19 0.4 0.4 20-21-22 23-24-25 0.8 0.8 26-27-28 2.4 0.6 3.0 29-30-31 2.0 0.4 2.4 32-33-34 1.2 0.6 1.8

TOTAL 12.4 10.4 2.4 0.2 25.4

42 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 15.4 15.4 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.4 0.4 05-06-07 0.4 0.4 08-09-10 1.8 0.4 2.2 11-12-13 0.8 0.6 0.2 1.6 14-15-16 17-18-19 20-21-22 23-24-25 1.4 1.4 26-27-28 1.0 0.4 1.4 29-30-31 0.8 0.6 1.4 32-33-34 0.4 0.4 0.8

TOTAL 15.4 7.2 2.6 0.2 25.4

43 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 16.0 16.0 Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.2 0.4 0.6 08-09-10 1.8 1.8 11-12-13 0.2 0.8 1.0 14-15-16 0.2 0.2 17-18-19 20-21-22 0.2 0.2 23-24-25 1.4 1.4 26-27-28 1.0 0.6 1.6 29-30-31 1.2 0.6 1.8 32-33-34 0.2 0.2

TOTAL 16.0 6.4 2.6 25.0

44 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 14.6 14.6 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.4 0.2 0.6 08-09-10 1.4 0.4 0.2 2.0 11-12-13 0.2 0.2 0.2 0.6 14-15-16 0.2 0.2 17-18-19 20-21-22 1.0 1.0 23-24-25 3.2 0.2 3.4 26-27-28 2.2 0.6 2.8 29-30-31 0.8 0.2 1.0 32-33-34 0.2 0.2 0.4

TOTAL 14.6 10.0 2.0 0.4 27.0

45 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.6 6.6 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 0.8 0.2 1.0 11-12-13 1.4 0.6 0.2 2.2 14-15-16 0.4 0.4 17-18-19 20-21-22 0.8 0.8 23-24-25 6.6 0.8 7.4 26-27-28 4.6 1.6 0.2 6.4 29-30-31 0.8 0.8 32-33-34 0.2 0.2

TOTAL 6.6 16.2 3.4 0.4 26.6

46 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.4 2.4 Variable 35-36-01 1.0 1.0 02-03-04 0.2 0.2 05-06-07 0.8 0.8 08-09-10 0.2 0.4 0.2 0.8 11-12-13 0.4 0.4 0.20.4 1.4 14-15-16 0.8 0.6 0.4 1.8 17-18-19 0.6 0.6 20-21-22 0.4 0.4 23-24-25 1.2 0.6 1.8 26-27-28 1.8 4.0 0.6 6.4 29-30-31 2.2 3.8 0.40.2 6.6 32-33-34 1.4 1.4 0.2 3.0

TOTAL 2.4 10.8 11.4 2.00.6 27.2

47 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 0.4 08-09-10 0.2 0.2 0.2 0.6 11-12-13 0.8 0.4 0.20.2 1.6 14-15-16 0.4 0.6 1.0 17-18-19 0.2 0.2 0.4 20-21-22 0.2 0.2 0.4 23-24-25 0.6 0.6 1.2 26-27-28 1.0 3.4 0.80.4 5.6 29-30-31 2.2 6.2 1.60.4 10.4 32-33-34 1.2 2.4 0.6 4.2

TOTAL 0.6 7.2 14.2 3.61.4 27.0

48 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.2 1.2 Variable 35-36-01 0.4 0.2 0.6 02-03-04 1.0 0.2 0.2 1.4 05-06-07 0.2 0.2 08-09-10 0.2 0.8 0.4 1.4 11-12-13 0.4 0.2 0.20.2 1.0 14-15-16 0.2 0.2 17-18-19 20-21-22 0.2 0.2 23-24-25 0.4 0.2 0.2 0.8 26-27-28 2.2 3.0 0.4 5.6 29-30-31 2.6 5.8 0.8 9.2 32-33-34 1.6 3.2 0.2 5.0

TOTAL 1.2 9.4 13.6 2.20.4 26.8

49 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 11.2 11.2 Variable 35-36-01 0.6 0.2 0.8 02-03-04 0.8 0.2 1.0 05-06-07 0.6 0.2 0.8 08-09-10 1.0 0.4 1.4 11-12-13 0.6 0.2 0.2 1.0 14-15-16 17-18-19 0.2 0.2 20-21-22 23-24-25 1.2 1.2 26-27-28 2.4 0.8 3.2 29-30-31 4.0 0.2 4.2 32-33-34 1.6 0.2 0.2 2.0

TOTAL 11.2 13.0 2.4 0.20.2 27.0

50 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 14.0 14.0 Variable 35-36-01 0.2 0.2 02-03-04 1.2 0.2 1.4 05-06-07 1.2 1.2 08-09-10 1.0 0.8 1.8 11-12-13 0.6 0.4 0.2 1.2 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 23-24-25 0.6 0.6 26-27-28 1.2 0.6 1.8 29-30-31 2.2 2.2 32-33-34 1.6 0.8 2.4

TOTAL 14.0 10.2 2.8 0.2 27.2

51 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 15.4 15.4 Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.6 0.6 08-09-10 0.8 1.0 0.20.2 2.2 11-12-13 0.6 0.2 0.8 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.2 0.2 23-24-25 1.8 1.8 26-27-28 1.6 0.6 2.2 29-30-31 1.4 0.6 2.0 32-33-34 0.8 0.8

TOTAL 15.4 8.8 2.2 0.40.2 27.0

52 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 13.4 13.4 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.6 0.2 0.2 1.0 08-09-10 0.6 1.4 0.2 2.2 11-12-13 0.6 0.2 0.8 14-15-16 0.4 0.2 0.6 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 3.2 0.2 3.4 26-27-28 4.0 0.4 4.4 29-30-31 1.2 0.2 1.4 32-33-34 0.4 0.4

TOTAL 13.4 12.0 2.8 0.4 28.6

53 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.8 4.8 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.2 0.2 0.4 08-09-10 0.6 1.0 0.2 1.8 11-12-13 1.0 1.4 2.4 14-15-16 17-18-19 1.2 1.2 20-21-22 0.4 0.4 23-24-25 5.4 1.6 7.0 26-27-28 5.6 3.0 8.6 29-30-31 1.0 1.0 2.0 32-33-34 0.2 0.2

TOTAL 4.8 15.6 8.2 0.4 29.0

54 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.4 1.4 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 0.4 0.8 0.2 1.4 11-12-13 1.0 1.2 0.20.2 2.6 14-15-16 0.6 0.8 0.2 1.6 17-18-19 0.2 0.2 0.4 20-21-22 0.6 0.4 1.0 23-24-25 0.8 1.6 2.4 26-27-28 1.8 3.8 0.2 5.8 29-30-31 2.2 4.6 1.6 8.4 32-33-34 0.8 1.4 0.2 2.4

TOTAL 1.4 8.6 15.4 2.80.2 28.4

55 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.2 0.2 Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.2 0.2 08-09-10 0.2 0.4 0.6 11-12-13 0.4 0.8 0.4 1.6 14-15-16 0.2 0.2 0.4 17-18-19 0.4 0.4 0.8 20-21-22 1.4 0.6 2.0 23-24-25 0.2 0.8 1.0 26-27-28 2.0 4.2 1.0 7.2 29-30-31 1.4 5.0 2.60.6 9.6 32-33-34 1.2 2.0 1.00.2 4.4

TOTAL 0.2 7.6 14.6 5.40.8 28.6

56 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.4 0.4 0.8 02-03-04 0.8 0.2 1.0 05-06-07 0.4 0.4 08-09-10 0.4 1.6 0.2 2.2 11-12-13 1.4 1.4 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.2 0.2 23-24-25 0.2 0.6 0.8 26-27-28 1.0 3.0 0.8 4.8 29-30-31 1.4 7.4 1.8 10.6 32-33-34 1.6 2.6 1.2 5.4

TOTAL 0.6 5.8 18.2 3.80.2 28.6

57 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 9.0 9.0 Variable 35-36-01 1.6 0.2 1.8 02-03-04 0.8 0.8 05-06-07 1.2 1.2 08-09-10 1.6 1.6 0.2 0.2 3.6 11-12-13 0.4 0.2 0.2 0.8 14-15-16 0.6 0.6 17-18-19 20-21-22 23-24-25 0.8 0.8 26-27-28 2.2 0.6 2.8 29-30-31 3.0 1.6 4.6 32-33-34 1.8 1.2 3.0

TOTAL 9.0 14.0 5.4 0.4 0.2 29.0

58 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 14.0 14.0 Variable 35-36-01 0.4 0.4 02-03-04 1.2 1.2 05-06-07 1.6 0.4 2.0 08-09-10 1.8 1.0 2.8 11-12-13 0.4 0.4 0.2 1.0 14-15-16 0.2 0.2 17-18-19 20-21-22 0.4 0.2 0.6 23-24-25 1.0 0.2 1.2 26-27-28 1.0 0.4 1.4 29-30-31 1.2 1.4 2.6 32-33-34 1.4 0.2 1.6

TOTAL 14.0 10.6 4.2 0.2 29.0

59 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 12.4 12.4 Variable 35-36-01 1.0 1.0 02-03-04 0.2 0.4 0.6 05-06-07 0.8 0.4 1.2 08-09-10 1.4 1.2 2.6 11-12-13 1.0 0.6 1.6 14-15-16 0.2 0.2 17-18-19 20-21-22 1.0 1.0 23-24-25 1.8 1.8 26-27-28 2.0 0.8 2.8 29-30-31 1.8 0.6 2.4 32-33-34 0.8 0.4 1.2

TOTAL 12.4 12.0 4.4 28.8

60 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 15.0 15.0 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 0.4 05-06-07 0.4 0.4 08-09-10 0.8 1.2 0.2 2.2 11-12-13 1.6 1.2 2.8 14-15-16 0.2 0.2 17-18-19 0.6 0.6 20-21-22 1.6 0.2 1.8 23-24-25 2.2 0.4 2.6 26-27-28 1.6 0.4 2.0 29-30-31 0.8 0.8 32-33-34 0.4 0.2 0.6

TOTAL 15.0 9.8 4.2 0.4 0.2 29.6

61 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.8 2.8 Variable 35-36-01 0.2 0.2 02-03-04 0.6 0.2 0.8 05-06-07 0.2 0.2 0.2 0.6 08-09-10 0.4 0.4 0.4 1.2 11-12-13 0.4 0.8 0.8 2.0 14-15-16 0.4 0.6 1.0 17-18-19 0.8 0.2 0.2 1.2 20-21-22 1.2 0.8 2.0 23-24-25 5.4 2.2 7.6 26-27-28 4.8 3.0 7.8 29-30-31 1.4 0.6 2.0 32-33-34 0.8 0.8

TOTAL 2.8 16.6 9.0 1.6 30.0

62 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.8 0.8 Variable 35-36-01 0.8 0.2 1.0 02-03-04 0.2 0.2 05-06-07 0.2 0.2 0.4 08-09-10 0.4 1.0 0.2 1.6 11-12-13 0.6 1.2 0.4 2.2 14-15-16 0.8 0.4 1.2 17-18-19 0.4 1.0 1.4 20-21-22 0.2 0.2 0.4 23-24-25 0.8 1.8 2.6 26-27-28 0.8 2.8 0.4 4.0 29-30-31 2.2 5.2 1.4 8.8 32-33-34 1.4 3.4 0.2 5.0

TOTAL 0.8 8.6 17.4 2.00.6 0.2 29.6

63 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.8 0.2 1.0 02-03-04 0.8 0.6 1.4 05-06-07 0.8 0.8 1.6 08-09-10 0.6 0.6 11-12-13 0.2 1.2 0.2 1.6 14-15-16 0.2 0.4 0.6 17-18-19 0.6 0.2 0.8 20-21-22 0.6 0.4 0.2 1.2 23-24-25 0.4 1.2 0.2 1.8 26-27-28 0.8 3.2 1.6 5.6 29-30-31 0.4 4.8 2.80.2 8.2 32-33-34 0.8 2.4 1.6 4.8

TOTAL 0.6 5.8 16.4 6.60.2 0.2 29.8

64 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.6 1.6 Variable 35-36-01 0.6 0.8 0.4 1.8 02-03-04 1.0 0.2 1.2 05-06-07 0.4 0.6 1.0 08-09-10 1.0 0.8 0.2 2.0 11-12-13 0.6 0.4 0.20.2 1.4 14-15-16 17-18-19 20-21-22 0.2 0.2 23-24-25 0.6 0.6 26-27-28 0.8 2.0 0.6 3.4 29-30-31 1.0 6.4 2.4 9.8 32-33-34 1.0 4.6 0.8 6.4

TOTAL 1.6 6.4 16.4 4.80.2 29.4

65 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 11.4 11.4 Variable 35-36-01 0.4 0.4 02-03-04 0.6 0.6 1.2 05-06-07 1.0 0.4 0.2 1.6 08-09-10 1.8 0.8 2.6 11-12-13 0.4 0.8 0.4 1.6 14-15-16 0.4 0.4 17-18-19 20-21-22 0.6 0.6 23-24-25 0.8 0.6 1.4 26-27-28 2.2 1.0 3.2 29-30-31 2.2 0.4 2.6 32-33-34 1.6 0.8 0.2 0.2 2.8

TOTAL 11.4 12.0 5.4 0.60.2 0.2 29.8

66 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 14.0 14.0 Variable 35-36-01 0.2 0.2 02-03-04 0.8 0.8 05-06-07 0.8 0.4 0.2 1.4 08-09-10 3.2 0.4 3.6 11-12-13 1.0 1.0 0.2 2.2 14-15-16 0.8 0.2 1.0 17-18-19 0.4 0.4 20-21-22 0.8 0.8 23-24-25 1.0 0.8 1.8 26-27-28 0.8 0.2 1.0 29-30-31 0.6 0.2 0.8 32-33-34 1.0 1.0 2.0

TOTAL 14.0 11.2 4.2 0.6 30.0

67 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 15.4 15.4 Variable 35-36-01 0.6 0.2 0.8 02-03-04 05-06-07 0.8 0.2 1.0 08-09-10 1.4 1.0 2.4 11-12-13 0.6 1.2 0.2 2.0 14-15-16 17-18-19 0.4 0.4 20-21-22 1.0 0.2 0.2 1.4 23-24-25 2.0 0.4 2.4 26-27-28 1.0 0.6 1.6 29-30-31 0.6 1.0 1.6 32-33-34 0.6 0.4 1.0

TOTAL 15.4 9.0 5.0 0.6 30.0

68 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.4 5.4 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 1.0 0.6 0.2 1.8 08-09-10 1.0 3.0 0.6 4.6 11-12-13 2.2 2.2 0.2 4.6 14-15-16 0.6 0.4 1.0 17-18-19 0.8 0.4 1.2 20-21-22 2.8 0.4 0.2 3.4 23-24-25 3.4 0.8 0.2 4.4 26-27-28 1.0 0.6 0.4 2.0 29-30-31 1.0 0.6 0.2 1.8 32-33-34 0.20.2 0.4

TOTAL 5.4 14.0 9.2 2.00.4 31.0

69 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.4 1.4 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.8 0.2 0.2 1.2 08-09-10 0.4 2.0 1.00.4 3.8 11-12-13 1.2 2.6 1.4 5.2 14-15-16 0.4 0.8 0.4 1.6 17-18-19 0.8 0.4 1.2 20-21-22 1.6 0.6 0.2 2.4 23-24-25 1.2 2.6 1.80.4 6.0 26-27-28 1.0 2.2 1.40.2 4.8 29-30-31 0.8 1.2 0.20.2 2.4 32-33-34 0.2 0.2 0.4

TOTAL 1.4 8.4 12.6 6.81.2 0.2 30.6

70 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.6 0.2 0.8 05-06-07 0.6 0.6 1.2 08-09-10 1.0 1.6 1.6 4.2 11-12-13 0.6 1.6 0.4 2.6 14-15-16 0.2 1.6 0.2 2.0 17-18-19 0.4 0.2 0.6 20-21-22 0.6 0.6 0.2 1.4 23-24-25 0.6 1.6 1.2 3.4 26-27-28 0.8 1.4 2.41.0 0.2 5.8 29-30-31 1.4 1.8 2.00.2 5.4 32-33-34 0.6 1.0 0.8 2.4

TOTAL 0.6 7.6 12.0 9.21.2 0.2 30.8

71 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.6 0.6 Variable 35-36-01 0.4 0.6 1.0 02-03-04 0.4 0.4 0.8 05-06-07 0.6 1.4 0.2 2.2 08-09-10 0.6 2.6 0.4 3.6 11-12-13 0.4 0.6 1.0 14-15-16 0.4 0.6 1.0 17-18-19 0.2 0.2 0.2 0.6 20-21-22 0.6 0.2 0.2 1.0 23-24-25 0.8 1.2 1.00.2 3.2 26-27-28 0.8 2.8 1.8 5.4 29-30-31 0.6 2.2 2.80.4 6.0 32-33-34 0.8 2.2 1.6 4.6

TOTAL 0.6 6.6 15.0 8.00.8 31.0

72 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.8 1.8 Variable 35-36-01 0.4 0.4 02-03-04 1.4 0.8 0.2 2.4 05-06-07 1.6 1.0 0.6 3.2 08-09-10 0.2 1.4 1.0 2.6 11-12-13 0.4 0.2 0.6 14-15-16 0.2 0.2 0.4 17-18-19 0.4 0.2 0.2 0.8 20-21-22 0.6 0.2 0.8 23-24-25 0.8 1.8 0.8 3.4 26-27-28 0.8 1.2 2.00.2 4.2 29-30-31 0.6 3.4 3.2 7.2 32-33-34 0.6 1.2 1.2 3.0

TOTAL 1.8 7.6 11.8 9.40.2 30.8

73 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.6 5.6 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.4 0.4 05-06-07 2.2 0.6 0.60.2 3.6 08-09-10 1.2 2.4 1.00.2 4.8 11-12-13 1.0 1.0 2.0 14-15-16 0.4 0.4 17-18-19 0.4 0.2 0.6 20-21-22 0.8 0.4 1.2 23-24-25 1.8 1.0 0.4 3.2 26-27-28 1.4 2.0 0.2 3.6 29-30-31 1.8 0.8 0.4 3.0 32-33-34 1.8 0.2 2.0

TOTAL 5.6 12.8 9.2 2.80.4 0.2 31.0

74 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.2 6.2 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.2 0.4 0.6 05-06-07 0.6 0.2 0.2 1.0 08-09-10 1.4 3.8 1.40.2 6.8 11-12-13 1.2 1.8 0.2 3.2 14-15-16 0.8 0.2 0.2 1.2 17-18-19 0.4 0.4 20-21-22 2.0 0.6 2.6 23-24-25 2.0 1.0 0.2 3.2 26-27-28 1.6 0.4 0.20.2 2.4 29-30-31 0.6 0.2 0.2 1.0 32-33-34 0.8 0.8 1.6

TOTAL 6.2 12.0 9.6 2.40.6 30.8

75 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.4 5.4 Variable 35-36-01 0.2 0.2 0.4 02-03-04 1.2 0.2 1.4 05-06-07 0.4 0.8 1.2 08-09-10 1.8 1.6 1.0 4.4 11-12-13 1.4 2.6 0.80.2 5.0 14-15-16 1.0 0.6 1.6 17-18-19 0.6 0.4 1.0 20-21-22 1.4 0.2 0.2 1.8 23-24-25 3.8 0.6 4.4 26-27-28 0.4 1.4 0.2 2.0 29-30-31 1.0 0.4 1.4 32-33-34 0.2 0.6 0.2 1.0

TOTAL 5.4 13.4 9.6 2.40.2 31.0

76 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.0 6.0 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.2 0.2 05-06-07 1.2 0.2 0.2 1.6 08-09-10 1.4 2.2 0.4 4.0 11-12-13 1.4 2.8 0.2 4.4 14-15-16 1.4 1.2 2.6 17-18-19 0.2 0.2 20-21-22 1.0 0.2 0.2 1.4 23-24-25 2.8 0.4 3.2 26-27-28 1.6 1.0 2.6 29-30-31 0.8 0.2 0.2 1.2 32-33-34 0.4 0.2 0.6

TOTAL 6.0 12.6 8.6 1.2 28.4

77 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.2 2.2 Variable 35-36-01 0.2 0.2 02-03-04 0.8 0.6 1.4 05-06-07 0.2 0.2 0.20.2 0.8 08-09-10 1.4 1.8 0.4 3.6 11-12-13 0.6 3.4 1.0 5.0 14-15-16 0.6 1.2 0.4 2.2 17-18-19 0.6 1.0 1.6 20-21-22 0.2 0.2 23-24-25 1.6 0.8 2.4 26-27-28 0.4 3.4 0.8 4.6 29-30-31 1.0 1.6 0.20.2 3.0 32-33-34 0.4 0.6 0.2 1.2

TOTAL 2.2 8.0 14.6 3.20.4 28.4

78 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.2 1.2 Variable 35-36-01 0.6 0.6 0.2 1.4 02-03-04 0.6 1.2 0.2 2.0 05-06-07 1.4 0.2 0.2 1.8 08-09-10 1.2 1.0 0.4 2.6 11-12-13 1.0 1.6 0.8 3.4 14-15-16 0.4 0.8 1.2 17-18-19 1.0 0.4 1.4 20-21-22 0.2 0.2 23-24-25 0.4 0.2 0.2 0.8 26-27-28 0.4 1.8 0.4 2.6 29-30-31 1.0 3.4 1.00.2 5.6 32-33-34 1.8 1.8 0.2 3.8

TOTAL 1.2 10.0 13.0 3.60.2 28.0

79 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.4 1.4 Variable 35-36-01 1.0 0.6 1.6 02-03-04 0.6 0.6 0.2 1.4 05-06-07 1.2 1.0 0.4 2.6 08-09-10 0.6 2.8 0.4 3.8 11-12-13 1.0 1.6 0.4 3.0 14-15-16 0.6 0.8 1.4 17-18-19 0.4 0.4 20-21-22 0.2 0.2 23-24-25 0.8 0.8 26-27-28 0.4 0.8 0.2 1.4 29-30-31 0.4 3.8 1.60.4 6.2 32-33-34 1.4 2.2 0.2 3.8

TOTAL 1.4 7.6 15.2 3.40.4 28.0

80 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.0 2.0 Variable 35-36-01 1.2 0.4 1.6 02-03-04 1.0 0.8 0.2 2.0 05-06-07 2.2 0.4 0.20.2 3.0 08-09-10 1.2 2.6 3.8 11-12-13 1.0 2.0 0.4 3.4 14-15-16 0.6 0.8 1.4 17-18-19 0.4 0.4 0.4 1.2 20-21-22 0.4 0.2 0.6 23-24-25 0.6 0.2 0.2 1.0 26-27-28 0.4 1.2 1.6 29-30-31 0.6 2.6 1.4 4.6 32-33-34 0.6 1.6 0.2 2.4

TOTAL 2.0 10.2 13.2 2.80.4 28.6

81 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.6 5.6 Variable 35-36-01 0.2 0.2 02-03-04 0.4 0.2 0.6 05-06-07 2.6 0.2 2.8 08-09-10 1.6 2.6 0.2 4.4 11-12-13 2.2 2.4 0.6 5.2 14-15-16 0.8 0.6 0.4 1.8 17-18-19 0.4 0.2 0.6 20-21-22 0.6 0.2 0.8 23-24-25 0.4 0.6 1.0 26-27-28 0.4 0.2 0.2 0.8 29-30-31 2.4 0.6 3.0 32-33-34 1.0 0.2 1.2

TOTAL 5.6 12.6 8.2 1.4 0.2 28.0

82 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.4 6.4 Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.8 0.4 1.2 08-09-10 1.6 3.2 0.2 5.0 11-12-13 2.0 1.8 0.2 4.0 14-15-16 2.2 1.4 1.0 4.6 17-18-19 0.4 0.2 0.6 20-21-22 0.4 0.2 0.6 23-24-25 0.8 0.4 1.2 26-27-28 1.2 0.6 1.8 29-30-31 1.6 1.6 32-33-34 1.0 1.0

TOTAL 6.4 12.6 8.0 1.6 28.6

83 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.4 6.4 Variable 35-36-01 02-03-04 0.4 0.2 0.6 05-06-07 0.2 0.2 08-09-10 2.8 1.6 0.2 4.6 11-12-13 2.0 1.6 1.6 5.2 14-15-16 1.2 1.2 0.4 2.8 17-18-19 1.0 0.8 1.8 20-21-22 1.6 1.6 23-24-25 1.6 0.2 1.8 26-27-28 1.2 0.4 0.2 1.8 29-30-31 0.4 0.2 0.4 1.0 32-33-34 0.4 0.4

TOTAL 6.4 12.8 6.0 2.8 0.2 28.2

84 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.6 6.6 Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.6 0.6 08-09-10 3.0 1.8 0.4 5.2 11-12-13 1.6 1.0 0.4 3.0 14-15-16 1.6 0.6 2.2 17-18-19 1.0 0.2 0.2 1.4 20-21-22 1.6 0.2 1.8 23-24-25 2.8 0.4 3.2 26-27-28 2.2 3.6 0.4 6.2 29-30-31 0.4 0.2 0.6 32-33-34

TOTAL 6.6 15.0 8.0 1.4 31.0

85 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.6 2.6 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 0.4 05-06-07 1.0 0.8 1.8 08-09-10 0.8 2.0 2.8 11-12-13 1.4 1.8 1.4 4.6 14-15-16 0.4 1.0 0.4 1.8 17-18-19 0.4 0.4 0.8 20-21-22 0.2 0.4 0.6 23-24-25 1.2 2.2 3.4 26-27-28 1.0 3.2 3.60.6 8.4 29-30-31 1.6 0.6 0.60.2 3.0 32-33-34 0.2 0.2 0.2 0.6

TOTAL 2.6 8.4 13.0 6.20.8 31.0

86 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.8 0.8 Variable 35-36-01 0.2 0.4 0.6 02-03-04 0.6 0.4 1.0 05-06-07 0.4 0.2 0.6 08-09-10 1.6 1.6 0.6 3.8 11-12-13 1.0 1.2 1.2 3.4 14-15-16 0.2 1.6 0.20.2 2.2 17-18-19 0.4 0.2 0.6 20-21-22 1.0 0.2 1.2 23-24-25 0.6 1.2 0.4 2.2 26-27-28 1.0 5.2 1.60.2 8.0 29-30-31 1.6 1.6 1.80.2 5.2 32-33-34 0.2 0.6 0.2 1.0

TOTAL 0.8 8.8 14.4 6.00.6 30.6

87 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.4 1.4 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.4 0.2 0.6 05-06-07 0.8 0.8 1.6 08-09-10 1.2 2.2 0.40.2 4.0 11-12-13 1.2 2.4 0.8 4.4 14-15-16 0.6 0.6 0.2 1.4 17-18-19 0.8 0.4 1.2 20-21-22 1.2 0.4 1.6 23-24-25 0.8 1.0 0.4 2.2 26-27-28 0.8 1.8 0.8 3.4 29-30-31 1.0 3.6 1.4 6.0 32-33-34 0.4 1.4 0.2 2.0

TOTAL 1.4 9.4 15.0 4.20.2 30.2

88 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.2 1.2 Variable 35-36-01 0.2 0.2 0.4 02-03-04 1.2 0.8 2.0 05-06-07 0.8 0.4 1.2 08-09-10 2.0 2.4 0.4 4.8 11-12-13 1.0 1.8 0.4 0.2 3.4 14-15-16 1.0 1.0 2.0 17-18-19 1.2 0.2 1.4 20-21-22 0.8 0.6 1.4 23-24-25 1.2 1.0 0.2 2.4 26-27-28 1.2 2.2 0.6 4.0 29-30-31 1.6 1.2 1.4 4.2 32-33-34 0.6 0.8 0.8 2.2

TOTAL 1.2 12.8 12.6 3.8 0.2 30.6

89 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.8 4.8 Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.4 0.2 0.6 05-06-07 0.8 0.6 1.4 08-09-10 3.2 1.8 0.8 5.8 11-12-13 2.2 1.4 0.4 4.0 14-15-16 2.6 0.8 3.4 17-18-19 0.8 0.4 1.2 20-21-22 1.8 1.8 23-24-25 1.4 0.6 2.0 26-27-28 0.8 0.8 1.6 29-30-31 1.4 1.2 2.6 32-33-34 0.4 0.4 0.2 1.0

TOTAL 4.8 16.0 8.4 1.4 30.6

90 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.6 6.6 Variable 35-36-01 02-03-04 0.4 0.4 05-06-07 2.0 0.4 2.4 08-09-10 3.8 1.4 5.2 11-12-13 1.4 0.8 0.6 2.8 14-15-16 2.0 1.2 3.2 17-18-19 1.6 0.8 2.4 20-21-22 1.8 0.6 2.4 23-24-25 2.0 0.6 2.6 26-27-28 1.2 0.6 1.8 29-30-31 0.6 0.2 0.8 32-33-34 0.2 0.2 0.4

TOTAL 6.6 17.0 6.6 0.8 31.0

91 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.8 6.8 Variable 35-36-01 02-03-04 05-06-07 0.6 0.6 08-09-10 2.4 2.4 0.2 5.0 11-12-13 2.0 1.6 3.6 14-15-16 1.8 0.8 0.2 2.8 17-18-19 0.4 0.4 0.8 20-21-22 2.0 0.4 2.4 23-24-25 4.0 2.4 6.4 26-27-28 1.2 0.6 1.8 29-30-31 0.2 0.2 32-33-34 0.2 0.2

TOTAL 6.8 14.8 8.6 0.4 30.6

92 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.2 4.2 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.4 0.6 1.0 08-09-10 3.8 1.0 4.8 11-12-13 1.8 1.0 2.8 14-15-16 0.8 0.8 17-18-19 0.6 0.6 20-21-22 0.4 0.2 0.6 23-24-25 3.2 1.0 4.2 26-27-28 3.6 0.6 0.4 4.6 29-30-31 1.4 0.4 1.8 32-33-34

TOTAL 4.2 16.2 4.8 0.4 25.6

93 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.6 1.6 Variable 35-36-01 02-03-04 0.6 0.6 05-06-07 0.6 0.2 0.8 08-09-10 3.4 1.6 5.0 11-12-13 1.8 1.0 2.8 14-15-16 0.6 0.6 1.2 17-18-19 0.6 0.2 0.8 20-21-22 0.6 0.6 23-24-25 0.4 2.2 0.4 3.0 26-27-28 0.4 3.2 1.80.2 5.6 29-30-31 2.4 0.8 3.2 32-33-34 0.2 0.2 0.2 0.6

TOTAL 1.6 9.2 11.6 3.20.2 25.8

94 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.2 1.2 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.2 0.2 05-06-07 1.0 1.0 08-09-10 0.8 1.8 0.2 2.8 11-12-13 1.6 2.6 4.2 14-15-16 0.6 0.6 17-18-19 0.2 0.8 1.0 20-21-22 0.4 0.2 0.6 23-24-25 1.2 0.6 1.8 26-27-28 0.8 2.6 1.6 5.0 29-30-31 0.8 2.2 1.2 4.2 32-33-34 0.6 1.0 0.8 2.4

TOTAL 1.2 8.0 12.6 3.8 25.6

95 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 0.8 0.8 Variable 35-36-01 0.6 0.6 1.2 02-03-04 0.6 0.2 0.8 05-06-07 0.6 0.8 0.20.2 1.8 08-09-10 1.0 2.8 0.4 4.2 11-12-13 0.6 2.0 2.6 14-15-16 1.0 0.8 1.8 17-18-19 0.2 0.4 0.6 20-21-22 0.4 0.4 23-24-25 0.2 1.0 0.2 1.4 26-27-28 1.0 2.8 0.4 4.2 29-30-31 1.6 1.8 0.6 4.0 32-33-34 0.2 1.8 0.2 2.2

TOTAL 0.8 8.0 15.0 2.00.2 26.0

96 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.4 2.4 Variable 35-36-01 0.2 0.8 1.0 02-03-04 0.2 0.8 1.0 05-06-07 1.0 0.8 1.8 08-09-10 2.0 2.8 0.40.2 5.4 11-12-13 1.0 1.2 2.2 14-15-16 0.2 0.4 0.6 17-18-19 0.4 0.2 0.6 20-21-22 0.6 0.4 1.0 23-24-25 0.4 0.4 0.8 26-27-28 0.6 1.8 0.2 2.6 29-30-31 1.4 3.0 0.4 4.8 32-33-34 0.6 0.8 0.2 1.6

TOTAL 2.4 8.6 13.4 1.20.2 25.8

97 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 3.8 3.8 Variable 35-36-01 0.8 0.8 02-03-04 0.4 0.2 0.6 05-06-07 1.4 0.4 1.8 08-09-10 4.4 0.8 0.2 0.2 5.6 11-12-13 2.6 0.8 0.4 3.8 14-15-16 1.6 0.4 2.0 17-18-19 0.8 0.2 1.0 20-21-22 0.4 0.2 0.6 23-24-25 2.2 0.2 2.4 26-27-28 0.8 0.6 1.4 29-30-31 0.8 0.4 1.2 32-33-34 0.8 0.2 1.0

TOTAL 3.8 17.0 4.4 0.6 0.2 26.0

98 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.6 5.6 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.4 0.6 1.0 08-09-10 3.6 1.6 5.2 11-12-13 3.2 1.2 4.4 14-15-16 1.6 1.6 17-18-19 0.8 0.8 20-21-22 1.8 0.2 2.0 23-24-25 1.6 0.8 0.2 2.6 26-27-28 0.6 0.6 1.2 29-30-31 1.0 1.0 32-33-34 0.2 0.2

TOTAL 5.6 14.8 4.8 0.4 0.2 25.8

99 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 5.0 5.0 Variable 35-36-01 02-03-04 0.6 0.6 05-06-07 0.8 0.4 0.2 1.4 08-09-10 3.2 1.2 4.4 11-12-13 2.0 1.6 3.6 14-15-16 0.4 0.2 0.6 17-18-19 0.4 0.4 20-21-22 1.6 0.2 1.8 23-24-25 2.4 0.8 3.2 26-27-28 2.2 1.4 0.2 3.8 29-30-31 0.6 0.2 0.8 32-33-34

TOTAL 5.0 14.2 6.0 0.4 25.6

100 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 13.0 13.0 Variable 35-36-01 0.2 0.2 02-03-04 0.6 0.2 0.8 05-06-07 2.2 2.2 08-09-10 3.6 0.8 4.4 11-12-13 1.6 0.6 2.2 14-15-16 0.4 0.4 17-18-19 0.6 0.6 20-21-22 0.2 0.2 23-24-25 2.0 2.0 26-27-28 2.0 0.6 2.6 29-30-31 0.6 0.2 0.8 32-33-34 0.4 0.4

TOTAL 13.0 14.4 2.4 29.8

101 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 3.6 3.6 Variable 35-36-01 0.6 0.4 1.0 02-03-04 0.2 0.2 05-06-07 1.0 0.2 1.2 08-09-10 3.0 2.0 5.0 11-12-13 2.8 1.0 3.8 14-15-16 0.4 0.2 0.6 17-18-19 0.8 0.8 20-21-22 0.8 0.2 1.0 23-24-25 1.2 0.8 0.2 2.2 26-27-28 3.6 3.6 0.6 7.8 29-30-31 1.2 0.4 1.6 32-33-34 0.6 0.2 0.8

TOTAL 3.6 16.2 9.0 0.8 29.6

102 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.2 2.2 Variable 35-36-01 0.6 0.4 1.0 02-03-04 1.2 0.2 1.4 05-06-07 1.6 0.4 2.0 08-09-10 1.0 2.2 0.2 3.4 11-12-13 1.6 1.0 2.6 14-15-16 1.2 0.6 1.8 17-18-19 0.6 0.6 20-21-22 0.2 0.4 0.6 23-24-25 1.0 0.4 1.4 26-27-28 1.6 3.0 0.8 5.4 29-30-31 1.0 3.2 1.0 5.2 32-33-34 0.6 1.4 2.0

TOTAL 2.2 12.2 13.2 2.0 29.6

103 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.0 2.0 Variable 35-36-01 0.6 0.8 0.40.2 2.0 02-03-04 0.8 1.0 0.2 2.0 05-06-07 1.6 0.8 2.4 08-09-10 1.8 2.0 0.20.2 0.2 4.4 11-12-13 0.2 1.2 0.4 1.8 14-15-16 0.6 0.4 1.0 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 0.2 0.2 0.4 26-27-28 0.6 2.0 0.4 3.0 29-30-31 1.4 3.0 1.2 5.6 32-33-34 1.2 3.0 0.4 4.6

TOTAL 2.0 9.6 14.4 3.20.4 0.2 29.8

104 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.8 2.8 Variable 35-36-01 2.0 2.0 0.2 4.2 02-03-04 1.8 1.0 0.2 3.0 05-06-07 0.8 1.2 2.0 08-09-10 3.0 1.0 0.2 4.2 11-12-13 1.4 0.8 2.2 14-15-16 0.6 0.6 17-18-19 0.4 0.4 20-21-22 23-24-25 0.6 0.2 0.8 26-27-28 0.8 0.4 1.2 29-30-31 1.2 2.2 0.6 4.0 32-33-34 1.6 2.8 4.4

TOTAL 2.8 14.2 11.4 1.4 29.8

105 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 11.0 11.0 Variable 35-36-01 2.8 0.4 3.2 02-03-04 2.0 0.2 2.2 05-06-07 2.8 0.2 3.0 08-09-10 2.8 1.0 0.4 4.2 11-12-13 1.4 1.4 14-15-16 1.6 0.2 1.8 17-18-19 0.4 0.4 20-21-22 0.2 0.2 23-24-25 26-27-28 0.2 0.2 0.4 29-30-31 0.2 0.2 32-33-34 1.0 0.4 1.4

TOTAL 11.0 15.4 2.6 0.4 29.4

106 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 13.2 13.2 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.4 0.4 05-06-07 1.8 1.8 08-09-10 3.6 1.0 4.6 11-12-13 1.6 0.8 2.4 14-15-16 1.8 1.8 17-18-19 0.8 0.8 20-21-22 0.6 0.6 23-24-25 0.8 0.2 1.0 26-27-28 0.8 0.2 1.0 29-30-31 0.6 0.2 0.8 32-33-34 0.4 0.2 0.6

TOTAL 13.2 13.6 2.8 29.6

107 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 13.0 13.0 Variable 35-36-01 0.2 0.2 02-03-04 0.4 0.4 05-06-07 1.0 0.2 1.2 08-09-10 4.2 0.8 5.0 11-12-13 3.0 0.4 3.4 14-15-16 0.6 0.2 0.8 17-18-19 1.0 1.0 20-21-22 0.6 0.6 23-24-25 2.2 2.2 26-27-28 0.4 0.2 0.6 29-30-31 0.6 0.2 0.8 32-33-34 0.6 0.6

TOTAL 13.0 14.6 2.2 29.8

108 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 22.2 22.2 Variable 35-36-01 02-03-04 05-06-07 08-09-10 2.6 0.6 3.2 11-12-13 1.8 0.4 2.2 14-15-16 0.6 0.6 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 1.6 1.6 26-27-28 0.2 0.2 29-30-31 32-33-34 0.2 0.2 0.4

TOTAL 22.2 7.6 1.2 31.0

109 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 10.0 10.0 Variable 35-36-01 02-03-04 05-06-07 0.8 0.2 1.0 08-09-10 2.2 1.2 3.4 11-12-13 1.2 0.4 1.6 14-15-16 2.0 0.6 2.6 17-18-19 0.6 0.2 0.8 20-21-22 1.2 1.2 23-24-25 6.2 6.2 26-27-28 2.6 0.8 3.4 29-30-31 0.2 0.2 32-33-34 0.6 0.6

TOTAL 10.0 17.6 3.4 31.0

110 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.2 4.2 Variable 35-36-01 0.2 0.2 02-03-04 0.4 0.2 0.6 05-06-07 0.6 0.6 08-09-10 1.2 2.0 0.2 3.4 11-12-13 1.2 0.6 1.8 14-15-16 1.8 0.6 2.4 17-18-19 1.6 0.2 1.8 20-21-22 1.4 1.4 23-24-25 1.8 1.2 3.0 26-27-28 3.6 1.0 4.6 29-30-31 1.8 1.6 0.2 3.6 32-33-34 2.4 0.8 0.2 3.4

TOTAL 4.2 18.0 8.2 0.6 31.0

111 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 3.2 3.2 Variable 35-36-01 3.0 0.8 0.2 4.0 02-03-04 0.6 0.6 1.2 05-06-07 1.6 1.0 2.6 08-09-10 0.8 1.0 0.4 2.2 11-12-13 1.2 0.4 1.6 14-15-16 0.2 0.2 0.4 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 0.4 0.2 0.2 0.8 26-27-28 1.4 1.2 2.6 29-30-31 3.0 3.0 0.4 6.4 32-33-34 2.4 2.6 0.4 5.4

TOTAL 3.2 15.2 11.0 1.6 31.0

112 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.6 6.6 Variable 35-36-01 1.4 0.2 1.6 02-03-04 3.2 0.2 3.4 05-06-07 3.6 0.2 3.8 08-09-10 2.2 0.6 0.4 3.2 11-12-13 1.4 0.2 1.6 14-15-16 17-18-19 0.2 0.2 20-21-22 23-24-25 0.2 0.2 26-27-28 0.2 0.2 29-30-31 3.4 1.4 4.8 32-33-34 3.4 1.8 5.2

TOTAL 6.6 19.2 4.6 0.4 30.8

113 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 17.2 17.2 Variable 35-36-01 0.6 0.2 0.8 02-03-04 0.8 0.8 05-06-07 2.8 0.2 0.2 3.2 08-09-10 4.0 0.8 4.8 11-12-13 1.4 0.4 1.8 14-15-16 0.8 0.8 17-18-19 20-21-22 0.2 0.2 23-24-25 26-27-28 0.6 0.6 29-30-31 0.4 0.4 32-33-34 0.4 0.4

TOTAL 17.2 12.0 1.6 0.2 31.0

114 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 18.8 18.8 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 1.4 0.2 1.6 08-09-10 4.6 0.6 0.2 5.4 11-12-13 2.6 0.2 2.8 14-15-16 0.8 0.8 17-18-19 0.6 0.6 20-21-22 23-24-25 0.2 0.2 26-27-28 0.2 0.2 29-30-31 0.2 0.2 32-33-34 0.2 0.2

TOTAL 18.8 11.0 1.0 0.2 31.0

115 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 20.4 20.4 Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 1.0 1.0 08-09-10 2.4 0.4 2.8 11-12-13 3.8 0.2 4.0 14-15-16 0.6 0.6 17-18-19 0.2 0.2 0.4 20-21-22 0.2 0.2 23-24-25 0.8 0.8 26-27-28 29-30-31 0.2 0.2 32-33-34

TOTAL 20.4 9.4 0.8 30.6

116 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 22.8 22.8 Variable 35-36-01 02-03-04 05-06-07 0.4 0.4 08-09-10 1.0 1.0 11-12-13 0.6 0.2 0.8 14-15-16 0.2 0.2 17-18-19 20-21-22 1.2 1.2 23-24-25 2.2 2.2 26-27-28 1.0 1.0 29-30-31 0.2 0.2 32-33-34

TOTAL 22.8 6.8 0.2 29.8

117 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 10.2 10.2 Variable 35-36-01 02-03-04 05-06-07 0.6 0.6 08-09-10 1.2 0.2 1.4 11-12-13 0.8 0.8 14-15-16 0.6 0.6 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 9.0 0.2 0.2 9.4 26-27-28 4.4 1.0 5.4 29-30-31 0.8 0.2 1.0 32-33-34

TOTAL 10.2 18.0 1.6 0.2 30.0

118 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 234meters above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.4 4.4 Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.2 0.2 05-06-07 1.0 0.2 1.2 08-09-10 0.4 0.2 0.6 11-12-13 0.6 0.4 1.0 14-15-16 1.0 0.2 1.2 17-18-19 1.4 0.2 1.6 20-21-22 0.4 0.4 23-24-25 1.4 0.6 2.0 26-27-28 3.8 2.6 0.2 0.2 6.8 29-30-31 3.0 2.4 0.4 5.8 32-33-34 3.0 1.0 0.2 4.2

TOTAL 4.4 16.6 8.0 0.8 0.2 30.0

119 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 2.2 2.2 Variable 35-36-01 2.0 1.2 3.2 02-03-04 0.8 0.2 1.0 05-06-07 1.2 0.2 1.4 08-09-10 0.4 0.6 1.0 11-12-13 0.2 0.2 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.2 0.2 23-24-25 26-27-28 0.6 2.2 0.4 3.2 29-30-31 2.0 5.0 2.2 0.2 9.4 32-33-34 2.6 5.2 7.8

TOTAL 2.2 10.2 14.8 2.6 0.2 30.0

120 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 6.6 6.6 Variable 35-36-01 1.2 1.2 02-03-04 1.8 1.8 05-06-07 2.2 0.2 2.4 08-09-10 0.8 0.2 1.0 11-12-13 0.2 0.2 14-15-16 17-18-19 20-21-22 23-24-25 0.2 0.2 26-27-28 2.4 1.0 3.4 29-30-31 7.0 1.2 8.2 32-33-34 4.2 0.8 5.0

TOTAL 6.6 20.0 3.4 30.0

121 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 21.0 21.0 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 1.2 1.2 08-09-10 1.8 0.4 0.2 2.4 11-12-13 0.6 0.6 14-15-16 0.2 0.2 0.4 17-18-19 20-21-22 0.4 0.4 23-24-25 0.4 0.4 26-27-28 1.6 0.2 1.8 29-30-31 0.8 0.8 32-33-34 0.2 0.2

TOTAL 21.0 7.4 1.0 0.2 29.6

122 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 23.2 23.2 Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.2 0.2 08-09-10 2.6 2.6 11-12-13 0.8 0.4 1.2 14-15-16 17-18-19 0.2 0.2 20-21-22 23-24-25 0.2 0.2 26-27-28 1.2 1.2 29-30-31 0.4 0.2 0.6 32-33-34 0.2 0.2

TOTAL 23.2 5.8 0.8 29.8

123 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 22.2 22.2 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.6 0.6 08-09-10 1.4 0.2 1.6 11-12-13 1.2 1.2 14-15-16 0.4 0.4 17-18-19 20-21-22 0.8 0.8 23-24-25 1.6 1.6 26-27-28 0.2 0.2 0.4 29-30-31 0.4 0.2 0.6 32-33-34 0.2 0.2

TOTAL 22.2 7.2 0.6 30.0

124 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 00 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 20.4 20.4 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.2 0.2 08-09-10 1.8 0.2 2.0 11-12-13 0.4 0.2 0.6 14-15-16 17-18-19 20-21-22 1.6 1.6 23-24-25 2.4 2.4 26-27-28 1.4 0.2 1.6 29-30-31 1.0 0.2 1.2 32-33-34

TOTAL 20.4 9.2 0.8 30.4

125 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 03 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 14.0 14.0 Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 08-09-10 0.4 0.2 0.6 11-12-13 1.8 0.2 2.0 14-15-16 0.2 0.2 0.4 17-18-19 0.2 0.2 20-21-22 0.8 0.8 23-24-25 6.2 0.8 7.0 26-27-28 3.2 0.4 3.6 29-30-31 1.0 0.6 1.6 32-33-34 0.2 0.2

TOTAL 14.0 14.4 2.4 30.8

126 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 meters above MSL Period : 1998 – 2002

Time : 06 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 4.4 4.4 Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.4 0.4 08-09-10 0.2 0.4 0.6 11-12-13 0.8 0.4 1.2 14-15-16 1.2 0.4 1.6 17-18-19 0.2 0.2 20-21-22 0.6 0.6 23-24-25 2.6 0.6 3.2 26-27-28 6.2 2.8 0.2 9.2 29-30-31 3.8 3.2 0.2 7.2 32-33-34 1.2 0.2 1.4

TOTAL 4.4 17.8 8.0 0.4 30.6

127 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 09 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 1.8 1.8 Variable 35-36-01 0.8 0.6 1.4 02-03-04 0.6 0.6 05-06-07 1.0 1.0 08-09-10 0.6 0.8 1.4 11-12-13 0.2 0.2 0.2 0.6 14-15-16 0.6 0.6 17-18-19 20-21-22 0.8 0.8 23-24-25 0.6 0.2 0.8 26-27-28 2.8 2.6 0.4 5.8 29-30-31 4.8 4.2 2.2 11.2 32-33-34 1.6 2.8 0.2 4.6

TOTAL 1.8 14.4 11.4 2.80.2 30.6

128 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 12 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 7.6 7.6 Variable 35-36-01 0.2 0.2 02-03-04 0.6 0.6 05-06-07 1.2 1.2 08-09-10 0.8 0.2 1.0 11-12-13 0.8 0.2 1.0 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 23-24-25 0.8 0.8 26-27-28 6.8 0.6 7.4 29-30-31 6.8 1.6 8.4 32-33-34 1.6 0.2 1.8

TOTAL 7.6 20.0 2.8 30.4

129 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 15 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 20.2 20.2 Variable 35-36-01 0.6 0.6 02-03-04 05-06-07 0.6 0.6 08-09-10 0.8 0.2 1.0 11-12-13 0.6 0.4 0.2 1.2 14-15-16 0.2 0.2 0.4 17-18-19 20-21-22 0.2 0.2 23-24-25 0.2 0.2 26-27-28 2.6 2.6 29-30-31 2.8 0.4 3.2 32-33-34 0.4 0.2 0.6

TOTAL 20.2 9.0 1.4 0.2 30.8

130 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 18 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 23.6 23.6 Variable 35-36-01 0.6 0.6 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 2.2 0.4 2.6 11-12-13 0.6 0.6 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.2 0.2 23-24-25 0.6 0.6 26-27-28 0.8 0.8 29-30-31 0.8 0.8 32-33-34 0.2 0.2

TOTAL 23.6 6.6 0.8 31.0

131 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – D

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 – 2002

Time : 21 UTC

Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.

WIND SPEED WIND 1 6 11 16 21 26 31 36 41 46 DIRECTION 0 to to to to to to to to to to >50 TOTAL 5 10 15 20 25 30 35 40 45 50

Calm 21.4 21.4 Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.4 0.2 0.6 08-09-10 2.0 0.2 2.2 11-12-13 0.6 0.2 0.8 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.6 0.6 23-24-25 2.6 2.6 26-27-28 1.2 0.2 1.4 29-30-31 0.2 0.2 0.2 0.6 32-33-34

TOTAL 21.4 8.2 1.0 0.2 30.8

132 BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

461 422 463 36 28 16

JANUARY FEBRUARY MARCH

448 463 435 12 7 8

APRIL MAY JUNE

450 11 463 443 8 17 AUGUST

JULY SEPTEMBER

463 450 460 42 45 52

OCTOBER NOVEMBER DECEMBER

SCALE OF FREQUENCIES (%)

N 0 10 20 30 40 50 1 - 5 6 - 11 12 - 19 > 19 kmph. N

C 1 - 3 4 - 6 7 - 10 > 10 knots. N - Total No. of Observations C - Total No. of Calms in Percentage Frequencies

Fig. 5. Windroses - Morning (0300 UTC) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

459 422 448 10 7 3

JANUARY FEBRUARY MARCH

447 464 437 5 5 5

APRIL MAY JUNE

458 445 446 7 11 11

JULY AUGUST SEPTEMBER

465 449 462 29 39 38

OCTOBER NOVEMBER DECEMBER

SCALE OF FREQUENCIES (%)

N 0 10 20 30 40 50 1-5 6-11 12-19 >19kmph. N

C 1 - 3 4 - 6 7 - 10 > 10 knots. N - Total No. of Observations C - Total No. of Calms in Percentage Frequencies

Fig. 6. Windroses - Afternoon (1200 UTC) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

OE E - MODEL

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH

APRIL MAY JUNE

JULY AUGUST SEPTEMBER

OCTOBER NOVEMBER DECEMBER M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 1.4 16.4 6.0 0.8 24.6 01 1.6 16.4 6.4 0.4 24.8 02 2.6 16.0 6.2 0.4 25.2 03 0.2 16.0 8.2 0.8 25.2 04 9.8 12.0 3.4 25.2 05 3.8 12.4 8.6 0.6 25.4 06 2.4 8.4 11.2 2.6 0.2 24.8 07 0.4 6.8 13.2 4.8 0.2 25.4 08 5.0 12.0 8.0 0.4 25.4 09 3.4 13.0 8.6 0.4 25.4 10 2.6 13.8 8.6 0.4 25.4 11 3.0 15.0 6.8 0.4 0.2 25.4 12 6.0 14.6 4.8 25.4 13 11.0 13.2 0.8 25.0 14 0.4 14.6 9.8 0.4 25.2 15 0.6 18.6 6.0 0.2 25.4 16 1.8 18.6 5.0 25.4 17 4.8 16.6 4.0 25.4 18 7.2 15.6 2.6 25.4 19 10.0 13.2 2.0 25.2 20 11.8 11.8 1.2 24.8 21 0.2 14.2 9.2 1.4 25.0 22 0.2 15.2 8.8 0.8 25.0 23 0.2 17.0 7.0 0.6 24.8

TOTAL 6.4 164.2 231.4153.8 46.2 2.0 0.2 604.2

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

133 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 8.4 15.4 3.2 27.0 01 9.8 14.8 2.2 26.8 02 9.6 14.2 2.8 26.6 03 5.4 16.0 4.6 0.6 26.6 04 1.0 10.2 13.2 2.2 0.2 26.8 05 0.2 4.8 13.6 7.0 1.0 26.6 06 2.0 11.4 12.0 1.8 27.2 07 1.4 6.8 14.8 3.6 26.6 08 1.2 4.6 15.2 5.4 26.4 09 0.8 4.2 14.6 7.2 0.2 27.0 10 0.6 4.6 14.2 6.8 0.6 26.8 11 0.8 5.0 14.6 6.2 26.6 12 1.0 6.6 15.6 3.6 26.8 13 2.0 12.6 11.2 1.0 26.8 14 3.2 14.6 8.2 0.6 26.6 15 5.2 16.2 5.4 0.2 27.0 16 8.0 15.6 3.4 27.0 17 11.8 12.4 2.8 27.0 18 0.4 13.0 12.4 1.4 27.2 19 0.8 14.8 10.4 1.2 27.2 20 1.8 15.8 8.8 0.6 27.0 21 3.4 16.4 6.8 0.4 27.0 22 4.6 16.6 5.6 0.4 27.2 23 7.0 14.4 5.4 0.2 27.0

TOTAL 52.4 204.4203.6 146.0 37.6 0.8 644.8

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

134 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 10.8 14.2 3.6 28.6 01 11.0 14.0 3.4 28.4 02 9.8 14.2 4.2 0.4 28.6 03 3.4 12.8 10.2 2.6 29.0 04 0.4 9.2 12.2 6.2 1.0 29.0 05 0.2 3.2 11.8 10.4 3.0 0.2 28.8 06 1.6 9.8 11.0 5.6 0.4 28.4 07 0.8 6.2 14.0 6.8 0.8 28.6 08 0.4 5.0 13.8 8.4 1.4 29.0 09 0.6 3.8 13.4 8.8 2.0 28.6 10 0.6 2.6 14.4 9.0 2.2 28.8 11 0.8 3.6 14.2 8.2 2.0 28.8 12 0.6 6.8 13.0 7.2 1.0 28.6 13 1.8 10.4 11.4 5.2 0.2 29.0 14 0.2 2.2 13.4 10.6 2.6 29.0 15 0.2 3.8 16.6 8.0 0.4 29.0 16 0.4 6.2 16.2 5.6 0.2 28.6 17 0.6 9.0 13.6 5.6 28.8 18 1.6 11.0 13.4 3.0 29.0 19 2.2 12.8 11.8 2.2 29.0 20 3.2 13.6 10.6 1.4 28.8 21 4.4 15.0 8.4 1.0 28.8 22 6.4 14.4 7.0 0.6 28.4 23 8.6 14.2 5.4 0.4 28.6

TOTAL 63.4 177.0210.0 163.2 66.4 10.2 690.2

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

135 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 4.2 13.6 11.2 0.6 29.6 01 4.2 12.6 12.8 0.4 30.0 02 1.2 11.8 14.4 2.4 29.8 03 7.6 12.2 10.2 30.0 04 1.8 10.6 15.2 2.4 30.0 05 0.2 6.6 15.0 8.2 30.0 06 3.4 12.2 13.4 0.6 29.6 07 0.2 2.2 10.4 14.2 3.0 30.0 08 0.2 1.2 9.4 14.8 4.4 30.0 09 1.0 8.4 13.8 6.6 29.8 10 0.2 1.0 7.8 12.4 8.2 29.6 11 1.2 7.8 13.4 7.2 29.6 12 1.6 8.6 14.2 5.0 29.4 13 0.6 2.8 11.8 12.6 1.8 29.6 14 0.4 6.6 13.6 8.8 0.4 29.8 15 1.0 9.8 14.0 4.8 0.2 29.8 16 1.8 11.8 14.2 2.0 29.8 17 2.4 13.2 13.4 0.8 29.8 18 4.4 15.4 9.8 0.4 30.0 19 6.2 16.4 7.4 30.0 20 0.2 8.8 15.2 5.6 0.2 30.0 21 0.6 10.6 15.4 3.4 30.0 22 1.4 12.6 13.4 2.2 29.6 23 3.0 12.6 13.0 1.4 30.0

TOTAL 14.8 109.6 212.4 205.2 136.4 37.4 715.8

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

136 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 0.2 3.4 16.4 11.0 31.0 01 0.2 2.8 15.6 11.6 0.2 30.4 02 0.2 0.2 1.6 10.4 16.4 1.8 30.6 03 0.2 1.0 6.0 15.8 7.6 30.6 04 1.2 3.6 12.0 13.6 0.6 31.0 05 0.6 2.2 8.0 15.8 4.4 31.0 06 0.2 2.2 5.6 14.2 8.6 30.8 07 0.2 1.4 4.8 12.2 11.6 0.4 30.6 08 1.6 3.4 10.6 14.0 0.8 30.4 09 1.0 4.0 9.2 15.2 1.6 31.0 10 0.6 4.2 8.6 14.2 3.0 30.6 11 0.2 0.8 3.4 9.8 13.8 2.6 30.6 12 0.4 5.2 9.8 14.6 0.8 30.8 13 1.2 5.2 12.6 11.2 0.2 30.4 14 0.2 2.4 7.0 15.4 5.6 30.6 15 0.2 4.0 8.4 16.6 1.8 31.0 16 0.2 5.4 10.8 14.0 0.6 31.0 17 0.8 6.2 12.8 10.8 30.6 18 0.6 6.8 17.0 6.4 30.8 19 1.0 8.4 17.0 4.4 30.8 20 1.4 8.6 18.0 3.0 31.0 21 1.4 11.2 17.2 1.2 31.0 22 2.2 12.8 14.8 0.6 30.4 23 0.2 2.4 14.0 13.6 0.2 30.4

TOTAL 0.2 1.0 21.6 143.2 247.2 198.6 116.2 9.4 737.4

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

137 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 1.2 17.8 9.4 28.4 01 0.6 16.8 11.2 28.6 02 0.6 11.2 16.0 0.8 28.6 03 0.6 6.0 20.0 1.8 28.4 04 0.8 3.4 17.6 6.4 28.2 05 0.6 3.0 12.4 12.4 28.4 06 0.6 2.0 9.6 15.0 0.8 28.0 07 0.4 2.2 5.8 17.2 2.8 28.4 08 0.8 2.8 4.8 16.0 4.0 28.4 09 3.0 4.8 14.0 6.2 28.0 10 0.4 3.6 4.0 13.4 6.8 28.2 11 0.4 3.0 5.4 12.6 7.0 28.4 12 0.2 3.4 7.0 12.6 5.4 28.6 13 0.2 4.2 7.6 13.4 3.2 28.6 14 0.2 4.8 10.6 11.0 1.6 28.2 15 0.2 6.2 13.2 8.4 28.0 16 0.2 6.6 14.0 7.2 28.0 17 0.2 7.6 16.0 4.6 28.4 18 0.4 8.2 17.2 2.8 28.6 19 0.4 9.4 16.4 2.0 28.2 20 0.4 10.8 15.4 1.2 27.8 21 0.4 12.6 15.0 0.2 28.2 22 0.6 14.6 13.0 0.2 28.4 23 1.2 14.4 12.2 27.8

TOTAL 11.6 177.6 278.6 173.2 37.8 678.8

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

138 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 0.4 20.6 10.0 31.0 01 0.4 19.2 10.8 30.4 02 0.4 17.2 13.0 30.6 03 12.8 18.0 0.2 31.0 04 9.4 17.2 4.2 30.8 05 0.2 6.2 16.6 7.6 30.6 06 5.2 15.4 10.0 30.6 07 4.2 13.8 12.4 30.4 08 3.4 14.0 11.4 1.6 30.4 09 2.2 13.2 12.0 2.8 30.2 10 3.8 12.6 11.0 3.4 30.8 11 3.8 14.0 9.6 3.4 30.8 12 4.4 14.2 9.2 2.8 30.6 13 5.2 15.0 9.6 1.0 30.8 14 7.8 14.8 8.2 30.8 15 9.0 14.6 7.0 30.6 16 12.0 13.4 5.6 31.0 17 13.4 13.2 4.2 30.8 18 0.2 14.4 14.2 2.2 31.0 19 0.2 15.6 13.8 1.4 31.0 20 17.2 13.8 31.0 21 18.4 12.2 30.6 22 19.0 11.8 30.8 23 0.2 20.4 10.4 31.0

TOTAL 2.0 264.8 330.0 125.8 15.0 737.6

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

139 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 0.2 22.4 2.8 0.2 25.6 01 0.2 22.0 2.8 0.2 25.2 02 0.2 18.0 7.0 25.2 03 0.2 10.6 15.0 25.8 04 5.8 19.6 0.2 25.6 05 3.4 20.2 2.0 25.6 06 2.6 18.2 4.8 25.6 07 2.6 14.8 8.2 25.6 08 2.8 12.2 10.6 25.6 09 3.2 11.2 11.6 26.0 10 3.0 10.8 12.2 26.0 11 3.4 10.4 12.2 26.0 12 5.2 10.6 10.0 25.8 13 0.2 5.2 14.4 6.2 26.0 14 6.6 15.6 3.8 26.0 15 7.8 16.4 1.8 26.0 16 10.0 15.8 0.2 26.0 17 11.4 14.6 26.0 18 0.2 12.0 13.6 25.8 19 0.2 14.0 11.4 25.6 20 0.2 16.0 9.8 26.0 21 0.2 17.8 7.6 25.6 22 0.2 19.2 6.2 25.6 23 0.2 20.6 5.0 25.8

TOTAL 2.2 245.6 286.0 84.2 618.0

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

140 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 6.2 23.0 0.6 29.8 01 6.2 22.8 0.4 29.4 02 3.8 23.2 2.4 0.2 29.6 03 0.6 19.2 9.8 29.6 04 0.6 9.4 19.2 0.4 29.6 05 0.6 5.2 23.6 0.4 29.8 06 0.6 3.2 19.6 6.2 29.6 07 0.2 3.4 16.6 9.4 29.6 08 0.4 3.4 15.4 10.6 29.8 09 0.6 3.2 12.8 13.2 29.8 10 0.6 3.6 12.6 13.0 29.8 11 0.6 5.2 13.6 10.4 29.8 12 0.8 5.6 15.6 7.8 29.8 13 1.2 6.6 19.8 2.2 29.8 14 1.2 8.4 20.2 29.8 15 0.8 13.0 15.6 29.4 16 1.2 16.8 11.4 29.4 17 1.2 19.6 8.6 29.4 18 1.6 23.2 4.8 29.6 19 2.2 23.8 3.8 29.8 20 2.4 25.0 2.2 29.6 21 3.4 24.6 1.8 29.8 22 4.2 24.4 0.8 0.2 29.6 23 5.8 23.4 0.4 29.6

TOTAL 47.0 339.2 251.6 74.0 711.8

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

141 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 5.4 21.0 4.6 31.0 01 5.4 21.0 4.4 30.8 02 3.2 19.2 7.8 30.2 03 0.4 11.8 18.4 0.4 31.0 04 0.2 3.4 21.0 6.4 31.0 05 0.8 13.4 16.8 31.0 06 0.8 6.8 22.4 1.0 31.0 07 0.8 3.0 22.2 4.2 30.2 08 1.0 1.6 20.8 7.0 30.4 09 0.8 1.0 19.8 9.4 31.0 10 0.8 0.8 20.6 8.6 30.8 11 0.6 1.8 23.4 5.0 30.8 12 1.0 6.6 22.0 1.2 30.8 13 0.8 17.8 12.2 30.8 14 3.2 22.4 5.2 30.8 15 4.8 24.2 2.0 31.0 16 8.4 21.6 0.8 30.8 17 10.8 20.2 31.0 18 16.8 14.2 31.0 19 18.6 12.2 30.8 20 0.8 20.8 9.0 30.6 21 1.2 21.2 8.2 30.6 22 1.8 22.6 6.6 31.0 23 4.0 21.8 5.2 31.0

TOTAL 22.4 232.8 252.8 195.0 36.4 739.4

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

142 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 0.6 11.014.6 3.6 29.8 01 0.4 11.814.0 3.4 29.6 02 0.6 10.814.2 4.2 29.8 03 4.0 17.2 7.8 1.0 30.0 04 11.8 14.6 3.6 30.0 05 2.6 17.0 9.0 1.4 30.0 06 0.2 10.8 15.8 3.2 30.0 07 6.0 18.8 5.2 30.0 08 3.6 20.0 6.0 0.4 30.0 09 0.2 2.0 20.2 7.2 0.4 30.0 10 0.2 1.6 20.4 7.4 0.4 30.0 11 0.2 4.2 20.2 4.8 0.4 29.8 12 0.2 11.8 16.6 1.4 30.0 13 2.2 18.6 8.8 0.2 29.8 14 6.4 17.6 5.8 29.8 15 0.2 9.8 16.0 3.6 29.6 16 0.8 12.8 13.8 2.4 29.8 17 1.0 14.2 13.2 1.4 0.2 30.0 18 1.6 17.2 10.2 0.8 29.8 19 3.2 17.8 8.6 0.2 29.8 20 4.8 19.0 6.2 30.0 21 6.4 18.2 5.4 30.0 22 9.0 17.0 3.8 0.2 30.0 23 11.0 15.2 3.2 0.4 29.8

TOTAL 1.8 75.6225.0 207.2 169.2 37.0 1.6 717.4

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

143 M O D E L -

CLIMATOLOGICAL SUMMARY

MODEL – E

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.

TEMPERATURE TIME -10 -5 0 5 10 15 20 25 30 35 40 45 (UTC) to to to to to to to to to to to to TOTAL -5 0 5 10 15 20 25 30 35 40 45 50

00 0.2 13.2 16.6 0.4 30.4 01 0.2 15.0 15.0 0.2 30.4 02 0.2 16.0 13.4 0.8 30.4 03 8.2 20.4 2.2 30.8 04 3.8 12.2 13.4 0.8 30.2 05 2.4 4.8 16.8 6.6 30.6 06 0.6 3.4 10.4 15.4 0.8 30.6 07 3.8 5.0 18.8 3.0 30.6 08 2.6 3.0 19.4 5.6 30.6 09 1.2 3.8 17.6 8.0 30.6 10 0.8 4.6 17.0 8.2 30.6 11 1.2 5.6 18.2 5.6 30.6 12 3.0 11.2 15.6 0.6 30.4 13 3.8 21.4 5.6 30.8 14 6.4 22.2 2.0 30.6 15 0.2 10.2 19.4 1.0 30.8 16 1.2 13.4 16.2 0.2 31.0 17 1.8 15.4 13.6 0.2 31.0 18 3.2 19.6 8.2 31.0 19 3.6 22.0 5.2 30.8 20 5.8 21.2 3.8 30.8 21 7.2 21.6 2.0 30.8 22 9.6 20.0 1.0 30.6 23 12.0 18.0 0.8 30.8

TOTAL 0.6 103.8 270.0191.2 138.4 31.8 735.8

Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive

144 BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

Temperature

50

40

30

C 0C ° 20

10

0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

mean maximum mean minimum

Fig. 7 (a) Mean Monthly Temperature

50 45 40 35 30

C

° 25 20 15 10

27.7,7/1973 33.4,5/1967 30.0, 12/1968 39.3,29/1973 45.3,25/1970 47.2,20/1978 46.5,19/1972 44.5, 2/1974 41.9, 3/1972 40.6, 2/1979 5 39.6, 2/1961 35.2, 6/1978 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Fig. 7 (b) Highest Maximum Temperature (ever recorded)

25

20

15

C

°

9.9, 30/1964

10 8.6, 6/1967

5 3.4, 1/1972

2.1, 30/1966

-2.2,11/1967

-1.6, 6/1974

-1.3, 30/1973

14.6, 2/1966 19.8, 6/1970 0 17.8, 7/1964 20.2, 30/1968 13.6, 23/1972 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Fig. 7 (c) Lowest Minimum Temperature (ever recorded) BACK NEXT CONTENTS

MODEL AMODELAMODELAMODELAMODELA MODEL B MODEL C MODEL D MODEL E TABLE VI

AL -VI TABLE

AERONAUTICAL CLIMATOLOGICAL SUMMARIES

JANUARY FEBRUARY MARCH

APRIL MAY JUNE

JULY AUGUST SEPTEMBER

OCTOBER NOVEMBER DECEMBER T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : January Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 991.8 992.3 992.3 992.0 991.6 02 991.6 992.9 994.0 991.0 992.4 03 991.4 992.8 993.6 990.5 991.3 04 990.9 992.7 993.5 990.6 991.1 05 989.8 991.4 991.6 988.4 989.3 06 988.2 987.5 990.6 987.9 989.5 07 988.4 989.9 990.8 988.6 989.9 08 989.6 991.5 992.4 989.3 990.5 09 989.4 991.3 992.4 989.8 991.4 10 990.1 992.0 992.7 989.7 990.6 11 989.1 990.5 990.8 987.8 988.7 12 987.5 988.7 989.5 987.0 988.7 13 988.1 990.0 990.7 987.5 988.7 14 987.9 989.4 990.1 987.1 988.5 15 987.0 988.9 990.0 987.5 989.6 16 988.5 990.5 991.2 988.4 989.6 17 988.9 990.7 992.1 988.5 989.8 18 988.5 990.5 991.3 990.9 990.0 19 988.8 990.4 991.4 988.3 990.2 20 988.9 990.8 991.9 988.5 990.0 21 988.8 990.2 991.0 987.1 988.3 22 986.7 988.1 989.4 985.5 987.8 23 987.0 988.9 990.1 987.5 988.9 24 987.8 989.4 990.8 988.3 989.5 25 988.9 990.6 991.0 987.8 989.1 26 987.4 988.6 989.5 986.6 987.8 27 986.8 988.3 989.8 986.3 988.1 28 986.4 988.8 989.9 990.3 990.0 29 989.7 991.7 992.7 989.8 991.1 30 989.4 990.8 991.5 988.6 989.8 31 988.7 990.6 991.4 988.9 990.6

TOTAL 30652.0 30700.7 30730.0 30646.0 30682.4 Pm Mean 988.8 990.3 991.3 988.6 989.8

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

145 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : February Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 989.1 990.3 989.6 986.8 988.5 02 988.3 990.1 991.5 988.4 990.2 03 989.3 990.8 992.8 988.3 990.2 04 989.1 990.5 991.3 987.3 988.7 05 987.5 989.8 990.6 987.7 989.3 06 987.9 990.3 990.8 987.7 989.0 07 987.7 990.1 991.1 988.1 989.4 08 988.4 990.3 991.1 988.5 990.3 09 989.4 990.9 991.6 988.4 989.8 10 988.1 989.7 990.7 987.4 988.6 11 987.6 988.9 989.5 986.7 989.4 12 989.0 991.3 992.4 989.8 991.4 13 989.9 991.5 992.3 988.7 990.7 14 988.4 990.1 990.7 987.4 989.1 15 987.4 989.7 990.4 987.5 989.3 16 988.0 989.9 990.6 986.8 988.3 17 987.5 989.0 989.8 986.4 988.1 18 987.1 989.1 989.7 986.7 988.6 19 987.7 989.8 990.5 987.2 988.8 20 986.6 988.5 989.2 985.7 987.8 21 987.0 990.2 990.1 988.0 988.6 22 987.7 989.9 990.6 987.5 989.2 23 987.4 989.4 990.3 987.1 988.0 24 986.3 987.8 988.0 984.7 986.4 25 985.1 987.0 988.3 985.8 988.0 26 986.8 988.5 989.6 986.4 987.5 27 986.5 988.5 989.3 986.4 988.3 28 743.2 989.4 990.2 986.9 988.9 29 984.9 986.0 986.5 983.4 984.2 30 31

TOTAL 28398.9 28697.3 28719.1 28627.7 28674.6 Pm Mean 979.3 989.6 990.3 987.2 988.8

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

146 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : March Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 987.2 988.8 989.2 985.9 987.4 02 985.8 987.4 988.5 985.7 987.7 03 987.0 989.1 989.6 986.8 987.8 04 986.7 988.1 988.3 984.7 985.8 05 985.1 987.4 987.8 984.3 986.0 06 984.4 986.4 987.4 984.6 986.3 07 984.9 986.7 987.4 984.3 985.9 08 984.5 986.4 986.9 984.0 986.8 09 984.2 986.1 987.0 983.5 985.3 10 983.9 986.0 986.8 983.7 985.3 11 983.5 985.4 985.9 982.4 984.1 12 982.8 984.7 985.3 981.1 984.2 13 983.9 985.6 987.1 984.1 986.4 14 985.1 987.4 988.1 985.0 986.8 15 985.4 987.3 988.0 984.9 986.6 16 984.3 986.2 986.6 983.1 984.0 17 982.9 984.4 984.7 982.2 983.7 18 983.8 986.2 986.8 984.0 985.9 19 985.1 987.0 987.5 984.4 985.4 20 983.7 985.6 985.6 981.8 983.8 21 982.7 984.4 984.5 982.0 983.4 22 982.0 983.8 984.0 981.2 983.0 23 981.5 983.6 984.5 981.5 983.4 24 982.4 984.7 984.9 981.4 982.6 25 981.4 983.4 983.9 980.9 982.7 26 982.4 984.7 985.2 982.0 983.9 27 982.7 984.6 984.8 981.6 983.2 28 982.1 983.8 984.1 980.3 982.7 29 982.2 984.3 984.8 981.6 983.5 30 982.6 985.0 983.7 981.4 983.6 31 982.9 984.8 985.3 981.3 983.4

TOTAL 30499.1 30559.3 30574.2 30475.7 30530.6 Pm Mean 983.8 985.8 986.3 983.1 984.9

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

147 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : April Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 983.6 984.7 984.7 981.3 983.0 02 981.8 983.8 983.9 980.3 982.2 03 981.6 983.7 984.5 981.3 983.1 04 982.1 984.6 985.0 980.6 982.8 05 982.3 983.8 984.3 980.8 982.9 06 982.2 984.0 985.6 981.0 982.5 07 981.7 983.7 983.8 980.2 981.4 08 980.5 982.1 982.6 977.9 980.1 09 980.0 981.6 981.8 978.0 980.2 10 979.4 981.5 981.7 978.5 980.5 11 980.4 982.5 982.7 978.9 981.2 12 981.0 982.7 983.0 979.0 981.0 13 980.2 981.8 982.2 977.9 980.3 14 980.4 982.6 982.9 978.8 981.3 15 981.2 983.6 984.1 980.6 982.8 16 981.8 983.5 983.5 979.2 981.5 17 980.5 982.1 982.3 978.8 980.5 18 979.9 981.8 982.1 979.7 980.4 19 979.5 981.3 981.4 977.8 979.7 20 979.4 981.5 981.4 977.6 979.4 21 978.9 980.7 980.4 976.8 978.8 22 978.7 980.5 980.5 976.5 978.4 23 978.0 979.7 979.4 975.4 977.6 24 976.9 979.0 979.6 974.8 976.9 25 976.3 978.0 977.5 973.8 977.2 26 976.9 979.2 979.3 976.0 978.1 27 977.2 979.2 979.3 974.7 976.9 28 976.6 978.1 977.7 974.0 962.9 29 976.5 978.2 978.4 974.5 976.8 30 977.0 978.9 978.9 975.3 977.2 31

TOTAL 29392.5 29448.4 29454.5 29340.0 29387.6 Pm Mean 979.8 981.6 981.8 978.0 979.6

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

148 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : May Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 976.7 978.7 978.7 975.6 976.9 02 976.9 979.0 979.1 975.0 977.3 03 977.0 979.0 979.1 975.2 978.0 04 977.5 979.3 978.9 975.3 977.7 05 977.5 979.4 979.2 975.0 976.8 06 977.1 978.9 978.7 974.6 977.2 07 977.2 979.7 979.8 976.5 977.4 08 978.1 979.8 979.4 975.7 977.8 09 977.6 979.1 978.9 974.7 976.7 10 976.3 977.8 977.4 973.8 975.8 11 976.3 979.0 978.0 973.8 976.1 12 976.3 977.9 977.8 973.3 977.0 13 977.0 979.1 979.1 974.6 976.5 14 976.6 978.1 977.9 973.5 976.3 15 976.3 978.3 977.9 973.4 976.3 16 976.2 977.9 977.9 974.0 975.8 17 975.7 977.9 977.7 972.8 976.1 18 974.9 976.5 976.3 971.1 973.5 19 973.5 974.8 974.2 970.3 972.7 20 973.0 974.8 975.0 971.1 973.8 21 974.3 975.6 975.9 972.6 975.0 22 974.8 976.6 975.8 972.6 974.5 23 974.7 976.1 975.8 971.9 973.8 24 973.3 974.9 974.4 970.7 972.7 25 972.5 974.2 973.7 969.7 973.1 26 972.0 974.2 974.1 970.9 973.1 27 973.8 975.8 975.5 971.6 975.3 28 974.6 975.6 976.1 972.2 973.7 29 974.1 976.5 975.3 971.9 974.0 30 974.4 975.9 976.0 972.6 974.2 31 975.0 977.1 976.8 973.4 975.0

TOTAL 30241.2 30297.5 30290.4 30169.4 30240.1 Pm Mean 975.5 977.3 977.1 973.2 975.5

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

149 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : June Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 975.0 977.0 976.9 973.5 975.1 02 975.0 976.8 976.9 973.5 976.0 03 975.3 977.5 977.3 973.4 974.9 04 975.5 977.4 977.2 974.2 976.1 05 975.9 977.6 977.3 973.4 974.7 06 974.9 976.0 976.3 972.3 974.1 07 973.6 975.6 975.5 971.5 973.2 08 972.6 974.1 974.1 970.6 973.4 09 973.2 975.2 975.2 971.1 973.3 10 973.3 974.4 974.3 970.7 973.0 11 974.1 975.4 975.5 971.5 974.3 12 974.3 976.0 975.3 971.6 973.8 13 973.4 974.8 974.9 971.5 974.0 14 973.5 974.9 975.6 971.9 973.8 15 973.7 974.9 974.6 970.6 973.2 16 972.8 974.6 975.1 971.2 973.3 17 972.6 974.5 974.6 971.5 973.6 18 973.4 974.8 974.8 971.1 973.3 19 973.4 974.8 974.9 970.8 972.9 20 972.1 973.4 973.2 969.4 971.2 21 971.0 972.2 971.8 968.4 970.5 22 970.7 971.8 971.5 968.6 971.5 23 971.7 972.8 973.0 970.5 972.2 24 972.1 973.4 974.0 970.7 972.8 25 972.3 973.3 973.1 977.4 972.3 26 971.6 973.0 973.3 970.1 972.8 27 972.7 974.6 974.7 971.2 974.3 28 974.5 975.5 975.7 971.6 974.0 29 973.7 975.0 974.9 971.7 973.6 30 973.0 974.4 974.1 971.4 973.8 31

TOTAL 29200.9 29245.7 29245.6 29146.9 29205.0 Pm Mean 973.4 974.9 974.9 971.6 973.5

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

150 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : July Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 973.0 973.7 973.5 970.8 972.4 02 971.6 972.9 977.3 970.3 972.3 03 971.9 973.4 973.8 970.3 973.0 04 972.5 973.9 973.8 970.7 973.2 05 973.0 974.5 974.4 970.7 972.9 06 972.0 973.6 973.7 970.1 972.4 07 971.8 973.5 973.6 970.7 973.0 08 972.6 973.9 973.8 969.8 972.4 09 971.7 973.0 973.2 969.6 971.8 10 971.3 972.9 973.0 968.8 971.4 11 970.7 972.0 972.0 969.4 971.9 12 971.6 972.9 973.6 970.5 973.4 13 972.7 974.1 974.4 970.8 973.0 14 972.7 973.8 973.7 970.8 973.1 15 972.4 973.8 973.7 970.4 972.5 16 972.0 973.7 973.8 970.9 973.2 17 972.6 974.2 974.1 971.0 973.3 18 973.1 974.8 975.1 971.6 974.0 19 972.2 973.8 974.6 971.0 973.3 20 972.2 973.3 974.1 970.0 972.9 21 972.2 973.6 974.2 971.0 973.1 22 972.5 974.3 974.3 971.9 974.1 23 973.3 974.8 974.9 971.9 973.6 24 972.8 973.9 974.2 971.1 972.8 25 972.9 974.6 974.6 971.7 973.8 26 973.3 974.5 974.7 971.7 973.5 27 972.7 974.2 974.5 971.6 973.4 28 973.1 974.6 975.2 972.3 974.2 29 973.8 975.5 975.6 972.4 974.6 30 974.0 975.4 975.6 972.4 972.9 31 972.3 976.3 976.4 973.6 975.6

TOTAL 30146.5 30193.4 30203.4 30099.8 30167.0 Pm Mean 972.5 974.0 974.3 971.0 973.1

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

151 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : August Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 975.5 976.8 976.6 973.0 974.6 02 974.2 975.4 975.3 971.6 973.8 03 973.9 975.3 975.8 972.4 975.2 04 974.9 976.3 976.6 973.5 975.2 05 974.9 976.2 976.2 972.9 974.9 06 974.2 975.4 975.8 972.7 975.1 07 974.6 975.7 975.6 972.3 974.8 08 974.3 975.8 975.2 971.9 974.3 09 974.1 975.4 975.9 972.3 975.2 10 974.6 975.9 976.4 973.4 975.6 11 974.5 975.7 975.9 972.6 974.5 12 974.2 975.3 975.5 971.8 973.9 13 973.7 974.8 975.0 972.0 974.6 14 974.4 976.1 976.9 973.7 976.7 15 976.3 978.0 978.2 974.5 977.0 16 975.8 976.8 977.1 973.8 975.7 17 974.7 976.2 976.4 972.8 974.8 18 974.6 976.1 976.6 974.3 976.7 19 976.4 977.3 978.3 975.7 977.6 20 976.7 978.3 978.5 975.1 977.1 21 976.0 977.4 977.5 974.2 976.5 22 976.0 977.4 977.7 974.2 977.1 23 976.9 978.5 978.8 975.6 977.7 24 977.2 978.3 978.3 974.8 976.9 25 976.9 978.0 978.0 974.2 976.4 26 975.9 977.7 977.8 974.7 976.8 27 976.8 977.7 980.1 974.1 975.4 28 974.2 975.6 975.5 971.6 974.3 29 974.7 976.1 976.2 972.3 974.8 30 974.4 975.6 975.8 972.3 974.8 31 974.4 975.7 976.3 973.1 975.5

TOTAL 30229.9 30270.8 30279.8 30173.4 30243.5 Pm Mean 975.2 976.5 976.8 973.3 975.6

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

152 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : September Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 975.8 977.6 977.8 974.7 977.4 02 976.8 978.2 978.4 975.1 981.6 03 977.5 978.7 978.8 976.4 978.5 04 978.2 979.5 979.6 976.0 978.6 05 977.8 979.2 979.3 975.9 978.2 06 976.9 978.7 978.9 975.5 977.7 07 977.3 979.0 979.4 976.6 978.8 08 978.9 980.1 980.3 977.1 979.3 09 978.6 979.8 979.8 977.2 978.2 10 977.5 979.0 979.0 976.0 977.9 11 977.8 979.2 979.4 976.0 978.5 12 978.1 979.9 979.6 977.0 979.0 13 978.4 979.8 979.8 976.9 979.5 14 978.9 980.5 980.7 977.8 979.1 15 978.7 980.3 980.5 977.0 978.9 16 978.3 979.9 980.0 976.7 978.9 17 978.5 979.8 980.1 976.8 978.9 18 978.7 980.3 980.5 977.5 979.9 19 980.1 981.7 981.9 978.9 981.5 20 981.0 982.5 982.4 979.6 981.5 21 981.2 982.8 983.0 979.0 981.2 22 981.3 982.9 983.0 979.5 981.3 23 981.1 983.0 983.1 979.5 981.7 24 980.8 982.6 982.5 979.2 981.5 25 981.4 982.5 982.9 979.1 981.3 26 981.4 983.3 983.6 980.0 982.1 27 981.9 981.5 983.6 970.0 982.1 28 982.2 983.7 983.6 980.1 982.0 29 982.3 984.5 983.6 980.0 982.4 30 982.0 983.5 983.5 980.1 982.3 31

TOTAL 29379.4 29424.0 29428.6 29321.2 29399.8 Pm Mean 979.3 980.8 981.0 977.4 980.0

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

153 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : October Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 982.2 983.6 983.9 980.5 983.0 02 982.8 984.4 985.2 980.7 978.6 03 981.9 983.5 983.5 979.9 981.9 04 982.0 983.9 984.1 980.5 982.6 05 982.2 984.3 984.3 981.5 982.9 06 983.2 984.8 984.8 981.6 983.5 07 983.4 985.0 984.8 981.5 983.3 08 983.3 985.1 984.9 981.2 982.7 09 982.4 984.1 984.1 980.8 982.7 10 983.1 985.1 984.7 981.3 982.9 11 983.0 984.5 984.6 981.0 982.3 12 982.5 984.4 984.6 981.4 983.3 13 983.4 985.3 985.2 981.9 983.4 14 983.4 985.3 985.0 981.6 983.2 15 983.7 985.5 985.4 982.7 984.2 16 983.7 985.5 985.3 981.9 983.7 17 982.7 984.1 983.8 980.7 982.1 18 981.1 982.4 982.5 977.9 981.4 19 981.1 983.0 983.1 980.5 982.1 20 981.9 984.0 984.1 982.0 983.8 21 983.3 984.9 984.2 982.1 983.7 22 983.7 985.9 985.8 983.1 984.9 23 984.5 986.4 986.0 983.1 985.0 24 984.7 986.9 986.7 984.5 985.1 25 984.6 986.5 986.6 983.7 985.2 26 984.9 986.8 986.7 983.8 985.0 27 984.5 986.4 986.4 983.6 985.0 28 984.7 986.4 986.1 983.0 984.6 29 984.3 986.0 985.9 982.9 984.7 30 983.9 985.8 986.2 982.9 984.5 31 984.0 986.0 986.0 983.4 985.5

TOTAL 30480.1 30535.8 30534.5 30437.2 30486.8 Pm Mean 983.2 985.0 985.0 981.8 983.4

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

154 T A B L E - VI

CLIMATOLOGICAL SUMMARY

TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : November Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 985.7 987.5 987.5 984.9 986.9 02 986.9 989.1 989.1 986.0 987.4 03 986.8 988.9 988.7 985.5 987.0 04 986.2 988.1 988.1 985.7 986.8 05 986.2 988.1 988.2 985.2 986.7 06 985.8 988.0 987.9 985.8 987.5 07 986.6 988.9 989.0 985.8 987.5 08 987.3 988.9 988.9 986.3 987.9 09 987.4 988.9 988.8 986.1 987.4 10 987.0 989.0 988.8 986.0 987.6 11 987.5 989.4 989.5 986.3 987.8 12 987.2 988.8 989.0 985.4 987.6 13 986.8 988.5 988.5 985.4 986.9 14 986.6 988.7 988.5 985.8 987.1 15 986.6 988.5 988.9 986.9 988.5 16 988.0 989.9 989.9 986.8 988.1 17 987.3 793.3 989.5 986.5 987.5 18 987.0 988.5 988.7 985.6 986.9 19 986.5 988.4 988.3 985.3 987.0 20 986.8 989.0 989.1 986.5 988.2 21 987.8 990.0 989.9 987.1 988.7 22 987.9 989.9 992.3 987.3 988.8 23 988.2 990.3 990.5 987.0 988.4 24 987.3 989.2 989.5 987.0 988.0 25 987.6 989.0 989.1 986.2 987.6 26 987.2 989.3 989.6 986.9 988.4 27 987.9 990.1 990.5 987.8 988.9 28 988.5 990.6 990.6 987.4 988.9 29 988.5 990.4 990.7 987.6 989.2 30 988.5 990.6 990.8 988.0 989.5 31

TOTAL 29615.6 29477.8 29678.4 29590.1 29634.7 Pm Mean 987.2 982.6 989.3 986.3 987.8

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

155 T A B L E - VI

CLIMATOLOGICAL SUMMARY TABLE – VI

Station : NEW DELHI (IGI) AIRPORT Month : December Latitude : 28o 34’ N Longitude : 077° 07’ E Elevation : 233 metres above MSL Period : 1998 - 2002

Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.

TIME IN UTC DATE 0000 0300 0600 1200 1800

01 988.9 990.6 991.1 988.2 989.7 02 988.9 990.8 991.2 988.4 990.1 03 989.6 991.7 992.0 989.9 990.5 04 989.5 991.2 991.1 987.5 988.8 05 987.8 989.8 989.9 987.1 988.7 06 988.2 990.1 990.6 987.9 990.1 07 988.9 990.7 991.1 987.9 989.3 08 988.7 990.7 991.2 988.4 990.2 09 988.9 990.7 991.0 988.4 989.8 10 988.8 990.8 991.2 988.6 990.3 11 990.0 992.0 992.5 989.6 991.1 12 990.4 992.4 992.7 990.5 992.0 13 991.3 992.9 992.9 990.0 991.3 14 990.3 992.1 992.3 989.5 990.8 15 989.8 991.3 991.6 988.6 989.8 16 989.5 991.5 992.0 989.1 990.4 17 989.4 991.1 991.7 988.8 989.9 18 988.1 989.6 990.7 987.7 989.4 19 988.5 990.3 991.0 988.1 989.3 20 988.5 990.1 990.8 987.9 989.4 21 988.8 990.5 991.0 988.4 990.2 22 989.9 991.9 992.3 989.6 991.1 23 990.0 991.9 992.3 989.1 990.5 24 991.0 991.9 992.5 989.4 991.0 25 990.0 991.7 992.3 989.6 991.0 26 990.1 991.9 992.5 989.9 991.0 27 990.2 991.9 992.8 990.2 991.8 28 990.9 992.9 993.4 989.8 992.0 29 990.7 992.0 991.9 989.3 990.3 30 988.9 990.5 990.9 988.3 989.5 31 988.3 989.8 990.4 988.0 990.3

TOTAL 30672.8 30727.3 30740.9 30653.7 30699.6 Pm Mean 989.4 991.2 991.6 988.8 990.3

• Required only if summary refers to a station at an international aerodrome

Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.

156 BACK NEXT CONTENTS

MODEL A MODEL B MODEL C MODEL D MODEL E TABLE VI

995.0

990.0

985.0

980.0 a

P 975.0 h

970.0

965.0

960.0

955.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec morning (0300 UTC) afternoon (1200 UTC)

Fig. 8. Station Level Pressure