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    Mesoscale Simulation of Rapid Soil Drying and Its Implications for Predicting Daytime Temperature

    Source: Journal of Hydrometeorology:;2001:;Volume( 002 ):;issue: 001::page 71
    Author:
    Santanello, Joseph A.
    ,
    Carlson, Toby N.
    DOI: 10.1175/1525-7541(2001)002<0071:MSORSD>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Rapid soil-surface drying, which is called ?decoupling,? accompanied by an increase in near-surface air temperature and sensible heat flux, is typically confined to the top 1?2 cm of the soil, while the deeper layers remain relatively moist. Because decoupling depends also on a precise knowledge of fractional vegetation cover, soil properties, and soil water content, an accurate knowledge of these parameters is essential for making good predictions of temperature and humidity. Accordingly, some simulations centered on the Atmospheric Radiation Measurement Program Cloud and Radiation Test Bed Southern Great Plains site in Kansas and Oklahoma using a high-resolution substrate layer (Simulator for Hydrology and Energy Exchange at the Land Surface), the Fifth-Generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model, and derived and default values for soil water content and fractional vegetation cover are presented. In so doing, the following points are made: 1) decoupling occurs only within certain threshold ranges of soil water content that are closely related to the soil type and 2) a knowledge of fractional vegetation cover derived from concurrent observations is necessary for capturing the spatial variation in rapid soil drying in forecast models.
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      Mesoscale Simulation of Rapid Soil Drying and Its Implications for Predicting Daytime Temperature

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4206153
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    • Journal of Hydrometeorology

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    contributor authorSantanello, Joseph A.
    contributor authorCarlson, Toby N.
    date accessioned2017-06-09T16:17:05Z
    date available2017-06-09T16:17:05Z
    date copyright2001/02/01
    date issued2001
    identifier issn1525-755X
    identifier otherams-64980.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4206153
    description abstractRapid soil-surface drying, which is called ?decoupling,? accompanied by an increase in near-surface air temperature and sensible heat flux, is typically confined to the top 1?2 cm of the soil, while the deeper layers remain relatively moist. Because decoupling depends also on a precise knowledge of fractional vegetation cover, soil properties, and soil water content, an accurate knowledge of these parameters is essential for making good predictions of temperature and humidity. Accordingly, some simulations centered on the Atmospheric Radiation Measurement Program Cloud and Radiation Test Bed Southern Great Plains site in Kansas and Oklahoma using a high-resolution substrate layer (Simulator for Hydrology and Energy Exchange at the Land Surface), the Fifth-Generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model, and derived and default values for soil water content and fractional vegetation cover are presented. In so doing, the following points are made: 1) decoupling occurs only within certain threshold ranges of soil water content that are closely related to the soil type and 2) a knowledge of fractional vegetation cover derived from concurrent observations is necessary for capturing the spatial variation in rapid soil drying in forecast models.
    publisherAmerican Meteorological Society
    titleMesoscale Simulation of Rapid Soil Drying and Its Implications for Predicting Daytime Temperature
    typeJournal Paper
    journal volume2
    journal issue1
    journal titleJournal of Hydrometeorology
    identifier doi10.1175/1525-7541(2001)002<0071:MSORSD>2.0.CO;2
    journal fristpage71
    journal lastpage88
    treeJournal of Hydrometeorology:;2001:;Volume( 002 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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