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    Two Years of Operational Comprehensive Hydrostatic Quality Control at the National Meteorological Center

    Source: Weather and Forecasting:;1993:;volume( 008 ):;issue: 001::page 57
    Author:
    Gandin, Lev S.
    ,
    Morone, Lauren L.
    ,
    Collins, William G.
    DOI: 10.1175/1520-0434(1993)008<0057:TYOOCH>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A comprehensive hydrostatic quality control (CHQC) procedure for rawinsonde heights and temperatures was implemented into operational use at the National Meteorological Center (NMC) in December 1988. The CHQC uses a sophisticated decision-making algorithm to detect so-called rough errors in rawinsonde observations and to confidently correct many of them. Statistics gathered over a two-year period are presented to provide information on the frequency, geographical distribution, and origin of these errors. During this period, approximately 7% of the rawinsonde reports received at the NMC contained a hydrostatically detectable error. The number of errors has stayed relatively constant over the two-year period. The geographic distribution of the errors is uneven, with most of them originating in countries where many of the steps involved in computing and coding the reports are performed manually. Other characteristics as well indicate that almost all problems that are detected by the CHQC are caused by human error. This article proposes several measures as a means of reducing these errors. An analysis of the performance of the CHQC, which reveals that fully 50% of the errors that are detected by the CHQC are corrected automatically by it as well, is also presented. Information about the remaining errors along with suggested corrections is made available to specialists in NMC's Meteorological Operations Division where a final decision is made. This type of information has been discovered to also be quite useful in monitoring the quality of data in near-real time. Its use has led to a quick resolution of many problems associated with data transmission and decoding procedures. Several examples are discussed.
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      Two Years of Operational Comprehensive Hydrostatic Quality Control at the National Meteorological Center

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    contributor authorGandin, Lev S.
    contributor authorMorone, Lauren L.
    contributor authorCollins, William G.
    date accessioned2017-06-09T14:47:22Z
    date available2017-06-09T14:47:22Z
    date copyright1993/03/01
    date issued1993
    identifier issn0882-8156
    identifier otherams-2681.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4163745
    description abstractA comprehensive hydrostatic quality control (CHQC) procedure for rawinsonde heights and temperatures was implemented into operational use at the National Meteorological Center (NMC) in December 1988. The CHQC uses a sophisticated decision-making algorithm to detect so-called rough errors in rawinsonde observations and to confidently correct many of them. Statistics gathered over a two-year period are presented to provide information on the frequency, geographical distribution, and origin of these errors. During this period, approximately 7% of the rawinsonde reports received at the NMC contained a hydrostatically detectable error. The number of errors has stayed relatively constant over the two-year period. The geographic distribution of the errors is uneven, with most of them originating in countries where many of the steps involved in computing and coding the reports are performed manually. Other characteristics as well indicate that almost all problems that are detected by the CHQC are caused by human error. This article proposes several measures as a means of reducing these errors. An analysis of the performance of the CHQC, which reveals that fully 50% of the errors that are detected by the CHQC are corrected automatically by it as well, is also presented. Information about the remaining errors along with suggested corrections is made available to specialists in NMC's Meteorological Operations Division where a final decision is made. This type of information has been discovered to also be quite useful in monitoring the quality of data in near-real time. Its use has led to a quick resolution of many problems associated with data transmission and decoding procedures. Several examples are discussed.
    publisherAmerican Meteorological Society
    titleTwo Years of Operational Comprehensive Hydrostatic Quality Control at the National Meteorological Center
    typeJournal Paper
    journal volume8
    journal issue1
    journal titleWeather and Forecasting
    identifier doi10.1175/1520-0434(1993)008<0057:TYOOCH>2.0.CO;2
    journal fristpage57
    journal lastpage72
    treeWeather and Forecasting:;1993:;volume( 008 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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