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Hadley's Principle: Understanding and Misunderstanding the Trade
History of Meteorology 3 (2006) 17 Hadley’s Principle: Understanding and Misunderstanding the Trade Winds Anders O. Persson Department for research and development Swedish Meteorological and Hydrological Institute SE 601 71 Norrköping, Sweden [email protected] Old knowledge will often be rediscovered and presented under new labels, causing much confusion and impeding progress—Tor Bergeron.1 Introduction In May 1735 a fairly unknown Englishman, George Hadley, published a groundbreaking paper, “On the Cause of the General Trade Winds,” in the Philosophical Transactions of the Royal Society. His path to fame was long and it took 100 years to have his ideas accepted by the scientific community. But today there is a “Hadley Crater” on the moon, the convectively overturning in the tropics is called “The Hadley Cell,” and the climatological centre of the UK Meteorological Office “The Hadley Centre.” By profession a lawyer, born in London, George Hadley (1685-1768) had in 1735 just became a member of the Royal Society. He was in charge of the Society’s meteorological work which consisted of providing instruments to foreign correspondents and of supervising, collecting and scrutinizing the continental network of meteorological observations2. This made him think about the variations in time and geographical location of the surface pressure and its relation to the winds3. Already in a paper, possibly written before 1735, Hadley carried out an interesting and far-sighted discussion on the winds, which he found “of so uncertain and variable nature”: Hadley’s Principle 18 …concerning the Cause of the Trade-Winds, that for the same Cause the Motion of the Air will not be naturally in a great Circle, for any great Space upon the surface of the Earth anywhere, unless in the Equator itself, but in some other Line, and, in general, all Winds, as they come nearer the Equator will become more easterly, and as they recede from it, more and more westerly, unless some other Cause intervene4. -
Remember the Met Office in World War One and World War Two
Remember The Met Office in World War One and World War Two National Meteorological Library and Archive The National Meteorological Library and Archive Many people have an interest in the weather and the processes that cause it and the National Meteorological Library and Archive is a treasure trove of meteorological and related information. We are open to everyone. The Library and Archive are vital for maintaining the public memory of the weather, storing meteorological records and facilitating learning. Our collections We hold a world class collection on meteorology which includes a comprehensive library of published books, journals and reports as well as a unique archive of original meteorological data, weather charts, private weather diaries and much more. These records provide access to historical data and give a snapshot of life and the weather both before and after the establishment of the Met Office in 1854 when official records began. Online catalogue Details of all our holdings are catalogued and access to this is available across the internet just go to www.library.metoffice.gov.uk. From here you will also be able to directly access any of our electronic content. The Meteorological Office in World War One The Meteorological Office in World War One At the start of the war little significance was attached to the importance of meteorology in warfare; a pilot would simply look out of the window to assess whether conditions were suitable for flying and hope that they remained so. Following losses in the air and on the ground, and the deployment of gas as a weapon on the battlefield, attitudes changed rapidly. -
Meteorological Glossary
METEOROLOGICAL GLOSSARY Met. O. 842 A.P.897 Meteorological Office Meteorological Glossary Compiled by D. H. Mclntosh, M.A., D.Sc. London: Her Majesty's Stationery Office: 1972 U.D.C. 551.5(038) First published 1916 Fifth edition 1972 © Crown copyright 1972 Printed and published by HER MAJESTY'S STATIONERY OFFICE To be purchased from 49 High Holborn, London WC1V 6HB 13a Castle Street, Edinburgh EH2 3AR 109 St Mary Street, Cardiff CF1 1JW Brazennose Street, Manchester M60 8AS 50 Fairfax Street, Bristol BS1 3DE 258 Broad Street, Birmingham Bl 2HE 80 Chichester Street, Belfast BT1 4JY or through booksellers Price £2-75 net SBN 11 400208 8* PREFACE TO THE FIFTH EDITION When, in 1967, the Meteorological glossary came under consideration for reprinting, it was decided to ask Dr Mclntosh to undertake a revised edition, with co operation from within the Meteorological Office. The opportunity has been taken in this edition, to delete some terms which are considered no longer appropriate, and to include various new entries and revisions which stem from recent advances and practice. Units of the Systeme International have been adopted in this edition. In some cases, however, the traditional British or metric units are also included because of existing World Meteorological Organization recommendations and for the con venience of user interests during the period before complete national and inter national adoption of SI units. Meteorological Office, 1970. PREFACE TO THE FOURTH EDITION In 1916, during the directorship of Sir Napier Shaw, the Meteorological Office published two pocket-size companion volumes, the 'Weather map' to explain how weather maps were prepared and used by the forecasters, and the 'Meteorological glossary' to explain the technical meteorological terms then employed. -
Biographical Sketches of Leading Meteorologists and Scientists of the Period from 1830 to 1920
Appendix Biographical Sketches of Leading Meteorologists and Scientists of the Period from 1830 to 1920 The scientists listed in this Appendix made important contributions to Nine teenth and early Twentieth Century meteorology and, in particular, to the develop ment of the thermal theory of cyclones .1 Their work forms the focus of this study. The brief sketches are intended to provide in a condensed form information about important steps in the professional careers of the scientists listed, and some indication of their major contributions to science. Information on aspects of the personal lives of these scientists has been included only sparingly. In many cases I found the source material very meager, especially with regard to personal informa tion; this is reflected in the brevity of a great number of the entries. The bibliographical references at the end of each sketch consist primarily of obituaries and contemporary memoirs. Modem biographies and memoirs have been listed whenever available. JOHANN FRIEDRICH WILHELM VON BEZOLD (1837 -1907) was born in Miinchen, Germany, the son of a high government official. He studied physics in Miinchen and Gottingen (under W. Weber and B. Riemann). After receiving his doctorate in 1860 he was appointed assistant to the physicist von Jolly in Miinchen. In 1861 he became privatdocent, and he was named extraordinary professor of physics 1 J. Bjerknes and H.' Solberg, who in 1920 stood just at the beginning of their careers, have not been included in this list. Accounts of J. Bjerknes' professional career may be found in J. A. B. Bjerknes, Selected Papers (Western Periodicals Company, 1975), pp. -
History Group Newsletter
HISTORY GROUP NEWSLETTER News, views and a miscellany published by the Royal Meteorological Society’s Special Interest Group for the History of Meteorology and Physical Oceanography Issue No.2, 2014 CONTENTS Introduction ............................................... 1 INTRODUCTION Forthcoming meeting .................................. 1 Darwin and FitzRoy play .............................. 2 from Malcolm Walker, History Group Chairman The history of weather ships ....................... 3 I am sorry this issue of the newsletter is a month or 100 years ago .............................................. 6 so late. Thank you for being patient. I had to get my Under-reporting of tornadoes ..................... 7 book about the organs and organists of Exeter Recording the wind, Part 2 .......................... 8 Cathedral to the publisher by the end of July. World War II ocean weather ships ............... 9 Thank you also to those who have contributed 175 years ago .............................................. 11 articles to this newsletter. Please keep fingers on 75 years ago ................................................. 12 word processor (or typewriter) keys and send me Pressure ...................................................... 13 articles for the autumn 2014 newsletter. The New Occasional Paper ................................. 13 deadline is 15 October. Southwick House, summer 1944 ................. 14 This newsletter acknowledges a number of The man who named clouds ........................ 17 anniversaries: 75 years since the outbreak of the Our Society, 150 years ago .......................... 17 Second World War, 70 years since D-Day and, of Sir Napier Shaw Christmas Card ................... 18 course, 100 years since the Great War began. You The wet weather in January 1877 ................ 18 will see that the newsletter also contains items from D-Day meteorology revisited ....................... 20 150 and 175 years ago, as well as something from South Polar Times, Volume IV ...................... 21 1877. -
Copyrighted Material
JWST490-c01 JWST490-Harrison Printer: Yet to Come October 6, 2014 14:11 244mm×170mm 1 Introduction The appearance of the sky and its relationship to the atmosphere’s properties have, no doubt, always provoked curiosity, with early ideas on explaining its variations available from Aristotle. A defining change in the philosophy of atmospheric stud- ies occurred in the seventeenth century, however, with the beginning of quantitative measurements, and the dawn of the instrumental age. Since then, elaborate devices to monitor and record changes in the elements have continued to develop, providing, along the way, measurements underpinning the instrumental record of past environ- mental changes, most notably in air temperature. This means that characterising and understanding early meteorological instruments are of much more than solely histor- ical interest, as recovering past measurements, whilst recognising their limitations, can also have immediate geophysical relevance. An important meteorological example is the reconstruction of past temperature variations from the miscellaneous thermometer records originally undertaken to sat- isfy personal curiosity. Ships’ logbooks provide another example, in terms of geomag- netic field changes. Beyond the actual data produced in either case, this also provides a reminder that all measurements can have unforeseen applications well beyond their original motivation [1], either through a change of context in which the measurements are evaluated, or because other subsequently important information has unwittingly been included.i Such future scope is probably impossible to predict completely, but it can to some extent be allowed for by ensuring a full appreciation of the related measurement science through careful description of the construction, calibration and recording procedures for the instrumentation employed. -
History Group Newsletter
HISTORY GROUP NEWSLETTER News, views and a miscellany published by the Royal Meteorological Society’s Special Interest Group for the History of Meteorology and Physical Oceanography Issue No.3, 2012 CONTENTS In this bumper issue of the newsletter, we continue 20 years of the World Wide Web .................. 1 with the theme of anniversaries (inspired by 2012 Under the weather ....................................... 4 being the year of Her Majesty’s Diamond Jubilee). Under the weather in India ........................... 4 We have, in this issue, features that take us back The British Antarctic Expedition – Part VIII .... 5 20, 25, 50, 60, 70, 100 and 150 years. We hope you The Great Storm of 25 years ago ................... 6 enjoy reading them. Climythology ................................................. 8 New book ..................................................... 9 A model of scientific reasoning ................... 10 20 YEARS OF THE WORLD WIDE WEB The Meteorological Research Flight ............ 11 by Malcolm Walker Subscriptions .............................................. 11 History Group Chairman Lynmouth 1952 ........................................... 12 The Great Smog of 1952 ............................. 12 One afternoon in November 1992, the telephone in my office rang. The call was from my wife, who was, 100 years ago in Symons’s Met Mag ........... 13 at the time, Head of IT Training in Cardiff University. Blowing hot and cold .................................. 15 I was an academic in that same university, my Remember these? ....................................... 15 subjects being marine meteorology and physical An unsung hero in meteorology .................. 16 oceanography. Above the clouds 150 years ago .................. 19 Recent publications .................................... 24 “I’ve got a weather satellite image on the screen of my computer monitor”, my wife said, or words to Forthcoming events .................................... 24 that effect. I didn’t understand. -
Dr. GT Bennett, FR S
558 NATURE NOVEMBER 13, 1943, VOL. 152 energy to its solution. In this way seismology, atmo in London, under the L.C.C., was placed above the spheric electricity and meteorological optics with senior wrangler. Soon after Bennett's consequent their innumerable concrete problems interested him election to a fellowship at St. John's College, he immensely and he became an authority on all these followed a precedent set by A. G. Greenhill, and subjects. It was the exhibition by Sir Napier Shaw became mathematical lecturer and fellow at Em at the British Association meeting in Dublin of a manuel College. Here he continued to live, in rooms diagram showing unexplained pressure waves on a increasingly in tune with the rising style of amenity microbarograph record which led to his outstanding in Cambridge, and for many years, until his death, paper on the great Siberian meteor, and it was the had presided, as senior fellow, at the College dinner. audibility in England of gun-fire on the Western Until after the War of 1914-18, mathematical Front during the War of 1914-18 which led directly lectures in Cambridge were organized for groups of to his major work on the transmission of sound, which colleges separately, and Bennett would lecture for has given us so much information about the tempera the group of which Emmanuel was part, possibly an ture of the upper atmosphere. Practically the whole enigma for some of his hearers ; and he offered, -of Whipple's numerous publications deal with prob besides, an algebraical lecture on line-geometry open lems of this nature. -
The Meteorological Research Flight and Its Predecessors and Successors
Journal of Aeronautical History Paper No. 2012/06 The Meteorological Research Flight and its predecessors and successors G. B. Gratton Facility for Airborne Atmospheric Measurements Building 125, Cranfield University Cranfield, Bedfordshire, MK43 0AL, UK Abstract This paper surveys the history of atmospheric research flying in Britain. The history includes substantial use of balloons and kites before the first world war, and expanded with the wartime need for meteorological understanding, leading to the creation of the first dedicated “Meteor Flight” in 1918, which existed for nearly 2 years until being disbanded as part of a post war general demobilisation. Between the wars, regular meteorological observations from aircraft were taken, as well as the provision of crew meteorologists to the new airship services. But airborne atmospheric research activities and the improvement of such capability were minimal through 1941. The creation of a new organisation attached to the Boscombe Down High Altitude Flight in 1942 re-discovered and expanded a “three-strand” pattern of atmospheric research flying which combined instrument development, scientific understanding and enhanced aircraft capability. This led to the creation of the Met Research Flight or MRF in 1946, which from 1946 to 2001 established and maintained a British lead in such work, and led to many fundamental discoveries in meteorology, as well as in several distinct fields of instrument science. Other organisations contemporary with the early period of MRF carried out similar observational work, but lacked the three-strand approach which characterised MRF’s world leading organisation. They had all been disbanded by 1965, superseded by automated observations and irrelevant to research requirements. -
Meteorological
S\>mons'8 Meteorological No. 630. JULY, 1918. VOL. LIII. SIR NAPIER SHAW ON REVOLVING FLUID IN THE ATMOSPHERE. IN a recent memoir communicated to the Royal Society* Sir Napier Shaw gives an extremely interesting and important summary of his views on the subject of " revolving fluid in the atmosphere " following Lord Rayleigh's contribution to the dynamics of this subject based on the paper by Dr. John Aitken, F.R.S. on " The Dynamics of Cyclones and Anticyclones." Lord Rayleigh in the introduction to his paper remarked that " so much of meteorology depends ultimately upon the dynamics of revolving fluid that it is desirable to formulate as clearly as possible such simple conclusions as are within our reach," with the object of finding their application in the phenomena shown by cyclones and anticyclones. At the beginning of the paper Sir Napier Shaw states that in the twenty years during which he has been practically concerned with the progress of dynamical meteorology and the explanation of the observed phenomena of cyclones and anticyclones he has deliber ately avoided the discussion of the theory of revolving fluid because he could not find it in the weather maps which form the starting point for such an investigation. In several previous investigations, of which the most exhaustive was the well known memoir dealing with " The Life-History of Surface Air Currents," it was clearly shown that in our latitudes cyclones and anticyclones are not examples of revolving fluid in the special sense referred to, and for that reason cannot be explained on the hypothesis that they are. -
The Met Office Grows Up: in War and Peace
OCCASIONAL PAPERS ON METEOROLOGICAL HISTORY No.8 THE MET OFFICE GROWS UP: IN WAR AND PEACE by M E Crewe Published by The Royal Meteorological Society’s History of Meteorology and Physical Oceanography Special Interest Group MARCH 2009 PUBLISHED ONLINE ONLY ROYAL METEOROLOGICAL SOCIETY 104 OXFORD ROAD – READING – RG1 7LL – UNITED KINGDOM Telephone: +44 (0)118 956 8500 Fax: +44 (0)118 956 8571 E-mail: [email protected] Web: http://www.royalmetsoc.org Registered charity number 208222 © Royal Meteorological Society 2009 CONTENTS ILLUSTRATIONS......................................................................................................iii INTRODUCTION........................................................................................................1 STAFFING .................................................................................................................1 DRAMATIS PERSONÆ.............................................................................................2 Elen Elaine Austin ............................................................................................................................2 Charles Ernest Pelham Brooks ........................................................................................................2 Sir David Brunt..................................................................................................................................2 Charles John Philip Cave .................................................................................................................3