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    Evaluation of the Upper-Tropospheric Moisture Climatology in a General Circulation Model Using TOVS Radiance Observations

    Source: Journal of Climate:;1995:;volume( 008 ):;issue: 010::page 2404
    Author:
    Salathé, Eric P.
    ,
    Chesters, Dennis
    ,
    Sud, Y. C.
    DOI: 10.1175/1520-0442(1995)008<2404:EOTUTM>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: TOVS satellite observations are used to evaluate the upper-tropospheric (400?200 mb) moisture distribution simulated by the GLA GCM in a 10-yr (1979?1988) integration produced for the Atmospheric Model Inter-comparison Project, in which several models participated worldwide. The simulated moisture fields show remarkable success in duplicating the large-scale structure and seasonal features in the observations, but they show insufficient contrast between very dry and very moist regions. The simulation generally does well in northern summer (June?July?August) but worse in northern winter. This is consistent with deficiencies in the annual cycle of moist convection so that convective rain stays too close to the equator in northern winter. The related misplacement of convective activity associated with the Asian monsoon produces discrepancies in the moisture over much of the Eastern Hemisphere. The simulation also shows a too weak moisture response to interannual fluctuations in the sea surface temperature, even for the large El Niño episode of 1983. These results indicate that deficiencies in modeling oceanic convection may be in part responsible for errors in the simulated upper-tropospheric moisture patterns.
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      Evaluation of the Upper-Tropospheric Moisture Climatology in a General Circulation Model Using TOVS Radiance Observations

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    contributor authorSalathé, Eric P.
    contributor authorChesters, Dennis
    contributor authorSud, Y. C.
    date accessioned2017-06-09T15:27:38Z
    date available2017-06-09T15:27:38Z
    date copyright1995/10/01
    date issued1995
    identifier issn0894-8755
    identifier otherams-4436.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4183245
    description abstractTOVS satellite observations are used to evaluate the upper-tropospheric (400?200 mb) moisture distribution simulated by the GLA GCM in a 10-yr (1979?1988) integration produced for the Atmospheric Model Inter-comparison Project, in which several models participated worldwide. The simulated moisture fields show remarkable success in duplicating the large-scale structure and seasonal features in the observations, but they show insufficient contrast between very dry and very moist regions. The simulation generally does well in northern summer (June?July?August) but worse in northern winter. This is consistent with deficiencies in the annual cycle of moist convection so that convective rain stays too close to the equator in northern winter. The related misplacement of convective activity associated with the Asian monsoon produces discrepancies in the moisture over much of the Eastern Hemisphere. The simulation also shows a too weak moisture response to interannual fluctuations in the sea surface temperature, even for the large El Niño episode of 1983. These results indicate that deficiencies in modeling oceanic convection may be in part responsible for errors in the simulated upper-tropospheric moisture patterns.
    publisherAmerican Meteorological Society
    titleEvaluation of the Upper-Tropospheric Moisture Climatology in a General Circulation Model Using TOVS Radiance Observations
    typeJournal Paper
    journal volume8
    journal issue10
    journal titleJournal of Climate
    identifier doi10.1175/1520-0442(1995)008<2404:EOTUTM>2.0.CO;2
    journal fristpage2404
    journal lastpage2414
    treeJournal of Climate:;1995:;volume( 008 ):;issue: 010
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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