25 years ago . . .

25 years ago . . . A SHORT COURSE IN CLOUD PHYSICS The "About our Members" section of the September 1964 3rd Edition BULLETIN* included the following item: Dr. Francis W. Reichelderfer, retired chief of the U.S. Weather R R Roger s an d M K Yau , Department of Bureau and past president of the AMS, was awarded the International Meteorology,McGill University,MontrealH3A 2K6, Meteorological Organization Prize for 1964 by the WMO Executive Committee at its 16th session on 8 June. The IMO Prize, established Canada by the WMO in 1955, is awarded annually for outstanding work in Cover s essentia l part s of clou d an d precipitation meteorology and international collaboration. Dr. Reichelderfer has par- physic s an d ha s bee n extensivel y rewritte n wit h ticipated most actively in international meteorological work both in the IMO (1938-1951) and in the WMO (1951-). He took an active part ove r 60 ne w illustration s an d man y ne w an d u p in the organization of the WMO and served as its first president (1951— t o dat e references . Th e earl y chapter s revie w 1955) and as a member of the Executive Committee until his retirement atmospheri c thermodynamics , providin g a in 1963. He also participated in the international meteorological activ- backgroun d fo r a ne w chapte r o n observe d cloud ities conducted by the IUGG. The prize consists of a gold medal, properties , an d revise d chapter s o n th e $1,200 (U.S.), and a diploma giving the citation for the award. • nucleatio n of wate r droplet s an d ice crystals , thei r growt h an d th e developmen t of precipitation . Man y curren t topic s ar e covere d suc h as * Bull. Amer. Meteor. Soc., 45, 619. mesoscal e meteorology , rada r clou d studie s an d numerica l clou d modelling , an d topic s fro m th e secon d edition , suc h a s sever e storms , precipitatio n processe s an d larg e scal e aspect s of 50 years ago.. . clou d physics , hav e bee n revised . Problem s ar e include d a s example s an d t o supplemen t th e text. Weather Bureau Adopts the International CONTENT S INCLUDE : Thermodynamic s of dr y Number Code* air . Parce l buoyanc y an d atmospheri c stability. Mixin g an d convection . Formatio n of clou d After nearly a half century of sending weather observations by coded droplets . Drople t growt h b y condensation . words, the Weather Bureau has changed to the use of numerals. Be- ginning in July, weather observers in continental U.S. are using com- Formatio n an d growt h of ice crystals . Rai n an d binations of the 10 numerals in sending their daily reports to the central snow . Precipitatio n processes . Sever e stor m an d office in Washington, D.C., and to other forecast centers. hail . Weathe r modification . Numerica l clou d The new arrangement keeps the United States in step with weather models . services in other nations and with ships at sea. Code messages in numerals are an international "language" and may be received and 307p p 114 illu s 200 lit ref s April 1989 sent by stations all over the world. Telegraph companies in this country 0 0 8 034863 7 (F) US$27.00 have agreed to transmit as many as five numerals as one word. More 0 08 034864 5 (H) US$54.00 information may be sent with fewer "words " and decoding of messages US Dollar prices quote d are valid for all countrie s except is simpler. Australia , Austria , German y (BRD), Ne w Zealand , UK and With the numbers code—for example—it is possible to report 99 Eire. Prices for thes e countries are available fro m the different kinds of weather, 16 wind directions, more than 50 varieties appropriat e Pergamo n office. of precipitation, about 30 cloud types, and about 10° each of wind velocity and visibility, as well as barometer pressures and changes, Fo r a full y descriptiv e brochur e o n A Short temperatures, and other detailed weather information. Also, each weather Course in Cloud Physics, please contac t you r station in the United States and Canada is now listed by an international index number. neares t Pergamo n office. The Bureau has issued a new code book, to which there are already Nam e some mimeographed amendments. While the confusion in changing over to such a radically different code will lead to some concern and Addres s inconvenience at first, in the long run the new code should prove advantageous. There is opinion in some quarters that the use of number codes results in greater errors in coding and transmission of reports, Pergamo n Press pic, Headingto n Hill Hall, and more loss from garbled messages. However, it remains to be seen Oxfor d OX 3 0BW, U K how serious this will be after the novelty of the system has passed. It should be noted that the new code is not exactly identical to the Pergamo n Press Inc, Fairvie w Park , Elmsford, International code used abroad through the principle and general struc- Ne w York 10523, US A ture is the same. • Pergamo n Press Member of Maxwell Macmillan Pergamon Publishing Corporation * Bull. Amer. Meteor. Soc., 20, 322. Bulletin American Meteorological Society http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the American Meteorological Society American Meteorological Society

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Abstract

A SHORT COURSE IN CLOUD PHYSICS The "About our Members" section of the September 1964 3rd Edition BULLETIN* included the following item: Dr. Francis W. Reichelderfer, retired chief of the U.S. Weather R R Roger s an d M K Yau , Department of Bureau and past president of the AMS, was awarded the International Meteorology,McGill University,MontrealH3A 2K6, Meteorological Organization Prize for 1964 by the WMO Executive Committee at its 16th session on 8 June. The IMO Prize, established Canada by the WMO in 1955, is awarded annually for outstanding work in Cover s essentia l part s of clou d an d precipitation meteorology and international collaboration. Dr. Reichelderfer has par- physic s an d ha s bee n extensivel y rewritte n wit h ticipated most actively in international meteorological work both in the IMO (1938-1951) and in the WMO (1951-). He took an active part ove r 60 ne w illustration s an d man y ne w an d u p in the organization of the WMO and served as its first president (1951— t o dat e references . Th e earl y chapter s revie w 1955) and as a member of the Executive Committee until his retirement atmospheri c thermodynamics , providin g a in 1963. He also participated in the international meteorological activ- backgroun d fo r a ne w chapte r o n observe d cloud ities conducted by the IUGG. The prize consists of a gold medal, properties , an d revise d chapter s o n th e $1,200 (U.S.), and a diploma giving the citation for the award. • nucleatio n of wate r droplet s an d ice crystals , thei r growt h an d th e developmen t of precipitation . Man y curren t topic s ar e covere d suc h as * Bull. Amer. Meteor. Soc., 45, 619. mesoscal e meteorology , rada r clou d studie s an d numerica l clou d modelling , an d topic s fro m th e secon d edition , suc h a s sever e storms , precipitatio n processe s an d larg e scal e aspect s of 50 years ago.. . clou d physics , hav e bee n revised . Problem s ar e include d a s example s an d t o supplemen t th e text. Weather Bureau Adopts the International CONTENT S INCLUDE : Thermodynamic s of dr y Number Code* air . Parce l buoyanc y an d atmospheri c stability. Mixin g an d convection . Formatio n of clou d After nearly a half century of sending weather observations by coded droplets . Drople t growt h b y condensation . words, the Weather Bureau has changed to the use of numerals. Be- ginning in July, weather observers in continental U.S. are using com- Formatio n an d growt h of ice crystals . Rai n an d binations of the 10 numerals in sending their daily reports to the central snow . Precipitatio n processes . Sever e stor m an d office in Washington, D.C., and to other forecast centers. hail . Weathe r modification . Numerica l clou d The new arrangement keeps the United States in step with weather models . services in other nations and with ships at sea. Code messages in numerals are an international "language" and may be received and 307p p 114 illu s 200 lit ref s April 1989 sent by stations all over the world. Telegraph companies in this country 0 0 8 034863 7 (F) US$27.00 have agreed to transmit as many as five numerals as one word. More 0 08 034864 5 (H) US$54.00 information may be sent with fewer "words " and decoding of messages US Dollar prices quote d are valid for all countrie s except is simpler. Australia , Austria , German y (BRD), Ne w Zealand , UK and With the numbers code—for example—it is possible to report 99 Eire. Prices for thes e countries are available fro m the different kinds of weather, 16 wind directions, more than 50 varieties appropriat e Pergamo n office. of precipitation, about 30 cloud types, and about 10° each of wind velocity and visibility, as well as barometer pressures and changes, Fo r a full y descriptiv e brochur e o n A Short temperatures, and other detailed weather information. Also, each weather Course in Cloud Physics, please contac t you r station in the United States and Canada is now listed by an international index number. neares t Pergamo n office. The Bureau has issued a new code book, to which there are already Nam e some mimeographed amendments. While the confusion in changing over to such a radically different code will lead to some concern and Addres s inconvenience at first, in the long run the new code should prove advantageous. There is opinion in some quarters that the use of number codes results in greater errors in coding and transmission of reports, Pergamo n Press pic, Headingto n Hill Hall, and more loss from garbled messages. However, it remains to be seen Oxfor d OX 3 0BW, U K how serious this will be after the novelty of the system has passed. It should be noted that the new code is not exactly identical to the Pergamo n Press Inc, Fairvie w Park , Elmsford, International code used abroad through the principle and general struc- Ne w York 10523, US A ture is the same. • Pergamo n Press Member of Maxwell Macmillan Pergamon Publishing Corporation * Bull. Amer. Meteor. Soc., 20, 322. Bulletin American Meteorological Society

Journal

Bulletin of the American Meteorological SocietyAmerican Meteorological Society

Published: Sep 1, 1989

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