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    The Community Land Model and Its Climate Statistics as a Component of the Community Climate System Model

    Source: Journal of Climate:;2006:;volume( 019 ):;issue: 011::page 2302
    Author:
    Dickinson, Robert E.
    ,
    Oleson, Keith W.
    ,
    Bonan, Gordon
    ,
    Hoffman, Forrest
    ,
    Thornton, Peter
    ,
    Vertenstein, Mariana
    ,
    Yang, Zong-Liang
    ,
    Zeng, Xubin
    DOI: 10.1175/JCLI3742.1
    Publisher: American Meteorological Society
    Abstract: Several multidecadal simulations have been carried out with the new version of the Community Climate System Model (CCSM). This paper reports an analysis of the land component of these simulations. Global annual averages over land appear to be within the uncertainty of observational datasets, but the seasonal cycle over land of temperature and precipitation appears to be too weak. These departures from observations appear to be primarily a consequence of deficiencies in the simulation of the atmospheric model rather than of the land processes. High latitudes of northern winter are biased sufficiently warm to have a significant impact on the simulated value of global land temperature. The precipitation is approximately doubled from what it should be at some locations, and the snowpack and spring runoff are also excessive. The winter precipitation over Tibet is larger than observed. About two-thirds of this precipitation is sublimated during the winter, but what remains still produces a snowpack that is very large compared to that observed with correspondingly excessive spring runoff. A large cold anomaly over the Sahara Desert and Sahel also appears to be a consequence of a large anomaly in downward longwave radiation; low column water vapor appears to be most responsible. The modeled precipitation over the Amazon basin is low compared to that observed, the soil becomes too dry, and the temperature is too warm during the dry season.
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      The Community Land Model and Its Climate Statistics as a Component of the Community Climate System Model

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4220854
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    contributor authorDickinson, Robert E.
    contributor authorOleson, Keith W.
    contributor authorBonan, Gordon
    contributor authorHoffman, Forrest
    contributor authorThornton, Peter
    contributor authorVertenstein, Mariana
    contributor authorYang, Zong-Liang
    contributor authorZeng, Xubin
    date accessioned2017-06-09T17:01:51Z
    date available2017-06-09T17:01:51Z
    date copyright2006/06/01
    date issued2006
    identifier issn0894-8755
    identifier otherams-78210.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4220854
    description abstractSeveral multidecadal simulations have been carried out with the new version of the Community Climate System Model (CCSM). This paper reports an analysis of the land component of these simulations. Global annual averages over land appear to be within the uncertainty of observational datasets, but the seasonal cycle over land of temperature and precipitation appears to be too weak. These departures from observations appear to be primarily a consequence of deficiencies in the simulation of the atmospheric model rather than of the land processes. High latitudes of northern winter are biased sufficiently warm to have a significant impact on the simulated value of global land temperature. The precipitation is approximately doubled from what it should be at some locations, and the snowpack and spring runoff are also excessive. The winter precipitation over Tibet is larger than observed. About two-thirds of this precipitation is sublimated during the winter, but what remains still produces a snowpack that is very large compared to that observed with correspondingly excessive spring runoff. A large cold anomaly over the Sahara Desert and Sahel also appears to be a consequence of a large anomaly in downward longwave radiation; low column water vapor appears to be most responsible. The modeled precipitation over the Amazon basin is low compared to that observed, the soil becomes too dry, and the temperature is too warm during the dry season.
    publisherAmerican Meteorological Society
    titleThe Community Land Model and Its Climate Statistics as a Component of the Community Climate System Model
    typeJournal Paper
    journal volume19
    journal issue11
    journal titleJournal of Climate
    identifier doi10.1175/JCLI3742.1
    journal fristpage2302
    journal lastpage2324
    treeJournal of Climate:;2006:;volume( 019 ):;issue: 011
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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