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    The Vertical Profile of Radiative Cooling and Lapse Rate in a Warming Climate

    Source: Journal of Climate:;2022:;volume( 035 ):;issue: 019::page 2653
    Author:
    Dennis L. Hartmann
    ,
    Brittany D. Dygert
    ,
    Peter N. Blossey
    ,
    Qiang Fu
    ,
    Adam B. Sokol
    DOI: 10.1175/JCLI-D-21-0861.1
    Publisher: American Meteorological Society
    Abstract: The vertical profile of clear-sky radiative cooling places important constraints on the vertical structure of convection and associated clouds. Simple theory using the cooling-to-space approximation is presented to indicate that the cooling rate in the upper troposphere should increase with surface temperature. The theory predicts how the cooling rate depends on lapse rate in an atmosphere where relative humidity remains approximately a fixed function of temperature. Radiative cooling rate is insensitive to relative humidity because of cancellation between the emission and transmission of radiation by water vapor. This theory is tested with one-dimensional radiative transfer calculations and radiative–convective equilibrium simulations. For climate simulations that produce an approximately moist adiabatic lapse rate, the radiative cooling profile becomes increasingly top-heavy with increasing surface temperature. If the temperature profile warms more slowly than a moist adiabatic profile in midtroposphere, then the cooling rate in the upper troposphere is reduced and that in the lower troposphere is increased. This has important implications for convection, clouds, and associated deep and shallow circulations.
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      The Vertical Profile of Radiative Cooling and Lapse Rate in a Warming Climate

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4289891
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    contributor authorDennis L. Hartmann
    contributor authorBrittany D. Dygert
    contributor authorPeter N. Blossey
    contributor authorQiang Fu
    contributor authorAdam B. Sokol
    date accessioned2023-04-12T18:34:02Z
    date available2023-04-12T18:34:02Z
    date copyright2022/09/08
    date issued2022
    identifier otherJCLI-D-21-0861.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4289891
    description abstractThe vertical profile of clear-sky radiative cooling places important constraints on the vertical structure of convection and associated clouds. Simple theory using the cooling-to-space approximation is presented to indicate that the cooling rate in the upper troposphere should increase with surface temperature. The theory predicts how the cooling rate depends on lapse rate in an atmosphere where relative humidity remains approximately a fixed function of temperature. Radiative cooling rate is insensitive to relative humidity because of cancellation between the emission and transmission of radiation by water vapor. This theory is tested with one-dimensional radiative transfer calculations and radiative–convective equilibrium simulations. For climate simulations that produce an approximately moist adiabatic lapse rate, the radiative cooling profile becomes increasingly top-heavy with increasing surface temperature. If the temperature profile warms more slowly than a moist adiabatic profile in midtroposphere, then the cooling rate in the upper troposphere is reduced and that in the lower troposphere is increased. This has important implications for convection, clouds, and associated deep and shallow circulations.
    publisherAmerican Meteorological Society
    titleThe Vertical Profile of Radiative Cooling and Lapse Rate in a Warming Climate
    typeJournal Paper
    journal volume35
    journal issue19
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-21-0861.1
    journal fristpage2653
    journal lastpage2665
    page2653–2665
    treeJournal of Climate:;2022:;volume( 035 ):;issue: 019
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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