automatic collection and transmission of ... - E-Library - WMO
automatic collection and transmission of ... - E-Library - WMO
automatic collection and transmission of ... - E-Library - WMO
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FOR E W0 R DAt its third sessioIT the <strong>WMO</strong> Commission for Hydrology (CHy) established aWorking Group on Instruments ond Methods <strong>of</strong> Observation. One <strong>of</strong> the tasks <strong>of</strong> theGroup was to complete a report on <strong>automatic</strong> equipment for observing <strong>and</strong> transmittinghydrological elements•. The G~oup consisted <strong>of</strong> Messrs. E. Walser (Switzerl<strong>and</strong>)(Chairman), M~ Hendler (Canada), M. F. E. Hinzpeter (Federal Republic <strong>of</strong>Germany), E. L. Peck (U.S.A.), K. D. Zavjalov (U.S.S.R.) <strong>and</strong> H. Schtlfer (IAHS).Dr. K. D. Zavjalov was later replaced by Mr. N. Ja Solov'ev (U.S.S.R.). The reportwas accordingly prepared <strong>and</strong> is reproduced in this present publication entitledIIAutomatic <strong>collection</strong> <strong>and</strong> <strong>transmission</strong> <strong>of</strong> hydrological observations".It is believed that it will be <strong>of</strong> particular value to national services <strong>and</strong>in particular to experts who have to install <strong>automatic</strong> stations <strong>and</strong> to select for thispurpose the most useful instrumental equipment.The terms <strong>of</strong> reference <strong>of</strong> the CHy Rapporteur on Instruments, Dr. E. L. Peck,required him to collect recommendations from Members on hydrometeorological instrumentswhich they have found reliable in specified environments, <strong>and</strong> to consolidatethese recommendations in a report for the use <strong>of</strong> Members <strong>and</strong> others in establishingnetworks. The group therefore maintained close collaboration with him especially incollecting information from Members. Analysis <strong>of</strong> the information he collectedrevealed that most <strong>of</strong> it could with advantage be included in the present. report,which is, therefore, the result <strong>of</strong> the common efforts <strong>of</strong> the Working Group <strong>and</strong> <strong>of</strong> theRapporteur on Instruments.Taking into account the rapid developments in the field <strong>of</strong> equipment foroperational hydrology, the report corefully combines the new advanced data <strong>collection</strong><strong>and</strong> <strong>transmission</strong> systems with the present conventional approaches, thus increasing itsapplicobility to different stages <strong>of</strong> development ond modernization in differentcountries. The report is a timely contribution which provides 0 useful link betweensimple, classical instrumentation <strong>and</strong> the complex modern installations for transmittingdata by satellites.I am pleased to have this opportunity <strong>of</strong> expressing to Mr. Walser <strong>and</strong> theother members <strong>of</strong> the Working Group, <strong>and</strong> to Dr. Peck, the sincere appreciation <strong>of</strong> theWorld Meteorological Organization for the time <strong>and</strong> effort they have devoted to thepreparation <strong>of</strong> this publication.~.. .D. A. DaviesSecretary-General
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