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    A Case Study of the Sensitivity of the Eta Data Assimilation System

    Source: Weather and Forecasting:;2000:;volume( 015 ):;issue: 005::page 603
    Author:
    Zapotocny, Tom H.
    ,
    Nieman, Steven J.
    ,
    Menzel, W. Paul
    ,
    Nelson, James P.
    ,
    Jung, James A.
    ,
    Rogers, Eric
    ,
    Parrish, David F.
    ,
    DiMego, Geoffrey J.
    ,
    Baldwin, Michael
    ,
    Schmit, Timothy J.
    DOI: 10.1175/1520-0434(2000)015<0603:ACSOTS>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A case study is utilized to determine the sensitivity of the Eta Data Assimilation System (EDAS) to all operational observational data types used within it. The work described in this paper should be of interest to Eta Model users trying to identify the impact of each data type and could benefit other modelers trying to use EDAS analyses and forecasts as initial conditions for other models. The case study chosen is one characterized by strong Atlantic and Pacific maritime cyclogenesis, and is shortly after the EDAS began using three-dimensional variational analysis. The control run of the EDAS utilizes all 34 of the operational data types. One of these data types is then denied for each of the subsequent experimental runs. Differences between the experimental and control runs are analyzed to demonstrate the sensitivity of the EDAS system to each data type for the analysis and subsequent 48-h forecasts. Results show the necessity of various nonconventional observation types, such as aircraft data, satellite precipitable water, and cloud drift winds. These data types are demonstrated to have a significant impact, especially observations in maritime regions.
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      A Case Study of the Sensitivity of the Eta Data Assimilation System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4168890
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    contributor authorZapotocny, Tom H.
    contributor authorNieman, Steven J.
    contributor authorMenzel, W. Paul
    contributor authorNelson, James P.
    contributor authorJung, James A.
    contributor authorRogers, Eric
    contributor authorParrish, David F.
    contributor authorDiMego, Geoffrey J.
    contributor authorBaldwin, Michael
    contributor authorSchmit, Timothy J.
    date accessioned2017-06-09T14:59:22Z
    date available2017-06-09T14:59:22Z
    date copyright2000/10/01
    date issued2000
    identifier issn0882-8156
    identifier otherams-3144.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4168890
    description abstractA case study is utilized to determine the sensitivity of the Eta Data Assimilation System (EDAS) to all operational observational data types used within it. The work described in this paper should be of interest to Eta Model users trying to identify the impact of each data type and could benefit other modelers trying to use EDAS analyses and forecasts as initial conditions for other models. The case study chosen is one characterized by strong Atlantic and Pacific maritime cyclogenesis, and is shortly after the EDAS began using three-dimensional variational analysis. The control run of the EDAS utilizes all 34 of the operational data types. One of these data types is then denied for each of the subsequent experimental runs. Differences between the experimental and control runs are analyzed to demonstrate the sensitivity of the EDAS system to each data type for the analysis and subsequent 48-h forecasts. Results show the necessity of various nonconventional observation types, such as aircraft data, satellite precipitable water, and cloud drift winds. These data types are demonstrated to have a significant impact, especially observations in maritime regions.
    publisherAmerican Meteorological Society
    titleA Case Study of the Sensitivity of the Eta Data Assimilation System
    typeJournal Paper
    journal volume15
    journal issue5
    journal titleWeather and Forecasting
    identifier doi10.1175/1520-0434(2000)015<0603:ACSOTS>2.0.CO;2
    journal fristpage603
    journal lastpage621
    treeWeather and Forecasting:;2000:;volume( 015 ):;issue: 005
    contenttypeFulltext
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    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian