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    Gravity Wave 1-leat Fluxes: A Lagrangian Approach

    Source: Journal of the Atmospheric Sciences:;1988:;Volume( 045 ):;issue: 012::page 1770
    Author:
    Coy, Lawrence
    ,
    Fritts, David C.
    DOI: 10.1175/1520-0469(1988)045<1770:GWLFAL>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The effect of a vertically propagating, internal gravity wave on the vertical flux of potential temperature (heat) is considered by averaging the local heat flux vector over a potential temperature surface. This approach gives the wave heat flux a simple physical picture which is not readily apparent from the more common Eulerian formulation. This method also allows the eddy diffusion coefficient to be a function of the phase of the wave. Such a phase dependent eddy diffusion has been previously considered from an Eulerian viewpoint as a model of a convectively unstable gravity wave. Here, the Lagrangian method confirms and corrects the Eulerian results. Earlier work is extended by modeling a constant amplitude ?breaking? wave, as well as by considering eddy diffusion coefficients that are asymmetric with respect to the wave breaking region. In all cases studied, 1ocalizing the eddy diffusion to the region of wayebreaking decreases the average heat flux.
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      Gravity Wave 1-leat Fluxes: A Lagrangian Approach

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4155994
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    contributor authorCoy, Lawrence
    contributor authorFritts, David C.
    date accessioned2017-06-09T14:28:17Z
    date available2017-06-09T14:28:17Z
    date copyright1988/06/01
    date issued1988
    identifier issn0022-4928
    identifier otherams-19834.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4155994
    description abstractThe effect of a vertically propagating, internal gravity wave on the vertical flux of potential temperature (heat) is considered by averaging the local heat flux vector over a potential temperature surface. This approach gives the wave heat flux a simple physical picture which is not readily apparent from the more common Eulerian formulation. This method also allows the eddy diffusion coefficient to be a function of the phase of the wave. Such a phase dependent eddy diffusion has been previously considered from an Eulerian viewpoint as a model of a convectively unstable gravity wave. Here, the Lagrangian method confirms and corrects the Eulerian results. Earlier work is extended by modeling a constant amplitude ?breaking? wave, as well as by considering eddy diffusion coefficients that are asymmetric with respect to the wave breaking region. In all cases studied, 1ocalizing the eddy diffusion to the region of wayebreaking decreases the average heat flux.
    publisherAmerican Meteorological Society
    titleGravity Wave 1-leat Fluxes: A Lagrangian Approach
    typeJournal Paper
    journal volume45
    journal issue12
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1988)045<1770:GWLFAL>2.0.CO;2
    journal fristpage1770
    journal lastpage1780
    treeJournal of the Atmospheric Sciences:;1988:;Volume( 045 ):;issue: 012
    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
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