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    Response of Tropical Precipitation to Global Warming

    Source: Journal of the Atmospheric Sciences:;2010:;Volume( 068 ):;issue: 001::page 123
    Author:
    Romps, David M.
    DOI: 10.1175/2010JAS3542.1
    Publisher: American Meteorological Society
    Abstract: Using high-resolution cloud-resolving simulations with different CO2 concentrations, local precipitation fluxes are found to obey Clausius?Clapeyron (CC) scaling. Previous studies of the effect of CO2 concentration on precipitation extremes have used general circulation models, which are poor platforms for studying tropical convection because convection is parameterized. In idealized cloud-resolving simulations, it is possible to identify not only the changes in local precipitation fluxes, but also the factors responsible for those changes. There are many properties of convection that can change as the atmosphere warms, each of which could produce deviations from CC scaling. These properties include the effective water-vapor gradient, cloud pressure depth, and cloud velocity. A simple theory is developed that predicts the changes in these properties consistent with CC scaling. Convection in the cloud-resolving simulations is found to change as predicted by this theory, leading to an ?20% increase in local precipitation fluxes when the CO2 concentration is doubled. Overall, an increase in CO2 leads to more vigorous convection, composed of clouds that are wider, taller, and faster.
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      Response of Tropical Precipitation to Global Warming

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4212071
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    contributor authorRomps, David M.
    date accessioned2017-06-09T16:34:38Z
    date available2017-06-09T16:34:38Z
    date copyright2011/01/01
    date issued2010
    identifier issn0022-4928
    identifier otherams-70304.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4212071
    description abstractUsing high-resolution cloud-resolving simulations with different CO2 concentrations, local precipitation fluxes are found to obey Clausius?Clapeyron (CC) scaling. Previous studies of the effect of CO2 concentration on precipitation extremes have used general circulation models, which are poor platforms for studying tropical convection because convection is parameterized. In idealized cloud-resolving simulations, it is possible to identify not only the changes in local precipitation fluxes, but also the factors responsible for those changes. There are many properties of convection that can change as the atmosphere warms, each of which could produce deviations from CC scaling. These properties include the effective water-vapor gradient, cloud pressure depth, and cloud velocity. A simple theory is developed that predicts the changes in these properties consistent with CC scaling. Convection in the cloud-resolving simulations is found to change as predicted by this theory, leading to an ?20% increase in local precipitation fluxes when the CO2 concentration is doubled. Overall, an increase in CO2 leads to more vigorous convection, composed of clouds that are wider, taller, and faster.
    publisherAmerican Meteorological Society
    titleResponse of Tropical Precipitation to Global Warming
    typeJournal Paper
    journal volume68
    journal issue1
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/2010JAS3542.1
    journal fristpage123
    journal lastpage138
    treeJournal of the Atmospheric Sciences:;2010:;Volume( 068 ):;issue: 001
    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
    yabeshDSpacePersian