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    A New Methodology for Assimilation of Initial Soil Moisture Fields in Weather Prediction Models Using Meteosat and NOAA Data

    Source: Journal of Applied Meteorology:;1997:;volume( 036 ):;issue: 009::page 1271
    Author:
    van den Hurk, Bart J. J. M.
    ,
    Bastiaanssen, Wim G. M.
    ,
    Pelgrum, Henk
    ,
    van Meijgaard, Erik
    DOI: 10.1175/1520-0450(1997)036<1271:ANMFAO>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: In this study, a simple method is described and tested for deriving initial soil moisture fields for numerical weather prediction purposes using satellite imagery. Recently, an algorithm was developed to determine surface evaporation maps from high- and low-resolution satellite data, which does not require information on land use and synoptic data. A correction to initial soil moisture was calculated from a comparison between the evaporation fields produced by a numerical weather prediction model and the satellite algorithm. As a case study, the method was applied to the Iberian Peninsula during a 7-day period in the summer of 1994. Two series of short-term forecasts, initialized from a similar initial soil moisture field, were run in parallel: a control run in which soil moisture evolved freely and an experimental run in which soil moisture was updated daily using the simple assimilation procedure. The simple assimilation resulted in a decrease of the bias of temperature and specific humidity at 2-m height during the daytime and a small decrease of the root-mean-square error of these quantities. The results show that the surface evaporation maps, derived from the satellite data, contain a signal that may be used to assimilate soil moisture in numerical weather prediction models.
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      A New Methodology for Assimilation of Initial Soil Moisture Fields in Weather Prediction Models Using Meteosat and NOAA Data

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4147884
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    • Journal of Applied Meteorology

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    contributor authorvan den Hurk, Bart J. J. M.
    contributor authorBastiaanssen, Wim G. M.
    contributor authorPelgrum, Henk
    contributor authorvan Meijgaard, Erik
    date accessioned2017-06-09T14:06:24Z
    date available2017-06-09T14:06:24Z
    date copyright1997/09/01
    date issued1997
    identifier issn0894-8763
    identifier otherams-12534.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4147884
    description abstractIn this study, a simple method is described and tested for deriving initial soil moisture fields for numerical weather prediction purposes using satellite imagery. Recently, an algorithm was developed to determine surface evaporation maps from high- and low-resolution satellite data, which does not require information on land use and synoptic data. A correction to initial soil moisture was calculated from a comparison between the evaporation fields produced by a numerical weather prediction model and the satellite algorithm. As a case study, the method was applied to the Iberian Peninsula during a 7-day period in the summer of 1994. Two series of short-term forecasts, initialized from a similar initial soil moisture field, were run in parallel: a control run in which soil moisture evolved freely and an experimental run in which soil moisture was updated daily using the simple assimilation procedure. The simple assimilation resulted in a decrease of the bias of temperature and specific humidity at 2-m height during the daytime and a small decrease of the root-mean-square error of these quantities. The results show that the surface evaporation maps, derived from the satellite data, contain a signal that may be used to assimilate soil moisture in numerical weather prediction models.
    publisherAmerican Meteorological Society
    titleA New Methodology for Assimilation of Initial Soil Moisture Fields in Weather Prediction Models Using Meteosat and NOAA Data
    typeJournal Paper
    journal volume36
    journal issue9
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1997)036<1271:ANMFAO>2.0.CO;2
    journal fristpage1271
    journal lastpage1283
    treeJournal of Applied Meteorology:;1997:;volume( 036 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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