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    Barotropic Model Simulations of the North Pacific Retrograde Disturbances

    Source: Journal of the Atmospheric Sciences:;1995:;Volume( 052 ):;issue: 010::page 1630
    Author:
    Huang, Huei-Ping
    ,
    Robinson, Walter A.
    DOI: 10.1175/1520-0469(1995)052<1630:BMSOTN>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Branstator?Kushnir-type large-scale westward propagating waves are investigated using linear and nonlinear global barotropic models with an idealized zonally asymmetric basic state. Retrograde waves are found in the most unstable normal mode of the zonally asymmetric basic state with a jet in the Northern Hemisphere. West-ward propagating waves also exist in nonlinear equilibrium states under a wide range of supercriticality and in both periodic and chaotic regimes. The frequency of the most unstable mode remains as a peak in the frequency spectrum through the nonlinear equilibration process. That frequency matches the frequency of the westward propagating waves in the nonlinear equilibrium states. Local energetics analyses of the linear and nonlinear cases show that the barotropic energy conversion concentrated in the jet exit supplies the perturbation energy of the disturbances all over the globe. Under a traditional spherical-harmonic decomposition, the westward propagating waves consist of several spherical-harmonic components. In the weakly chaotic nonlinear equilibrium states, these components show higher regularity in time than the others and may possess higher predictability.
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      Barotropic Model Simulations of the North Pacific Retrograde Disturbances

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4157805
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    contributor authorHuang, Huei-Ping
    contributor authorRobinson, Walter A.
    date accessioned2017-06-09T14:33:02Z
    date available2017-06-09T14:33:02Z
    date copyright1995/05/01
    date issued1995
    identifier issn0022-4928
    identifier otherams-21463.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4157805
    description abstractBranstator?Kushnir-type large-scale westward propagating waves are investigated using linear and nonlinear global barotropic models with an idealized zonally asymmetric basic state. Retrograde waves are found in the most unstable normal mode of the zonally asymmetric basic state with a jet in the Northern Hemisphere. West-ward propagating waves also exist in nonlinear equilibrium states under a wide range of supercriticality and in both periodic and chaotic regimes. The frequency of the most unstable mode remains as a peak in the frequency spectrum through the nonlinear equilibration process. That frequency matches the frequency of the westward propagating waves in the nonlinear equilibrium states. Local energetics analyses of the linear and nonlinear cases show that the barotropic energy conversion concentrated in the jet exit supplies the perturbation energy of the disturbances all over the globe. Under a traditional spherical-harmonic decomposition, the westward propagating waves consist of several spherical-harmonic components. In the weakly chaotic nonlinear equilibrium states, these components show higher regularity in time than the others and may possess higher predictability.
    publisherAmerican Meteorological Society
    titleBarotropic Model Simulations of the North Pacific Retrograde Disturbances
    typeJournal Paper
    journal volume52
    journal issue10
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1995)052<1630:BMSOTN>2.0.CO;2
    journal fristpage1630
    journal lastpage1641
    treeJournal of the Atmospheric Sciences:;1995:;Volume( 052 ):;issue: 010
    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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