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    Tropopause-Level Waveguides

    Source: Journal of the Atmospheric Sciences:;2010:;Volume( 067 ):;issue: 003::page 866
    Author:
    Martius, O.
    ,
    Schwierz, C.
    ,
    Davies, H. C.
    DOI: 10.1175/2009JAS2995.1
    Publisher: American Meteorological Society
    Abstract: Jet streams located on the dynamical tropopause are accompanied by coaligned bands of enhanced potential vorticity (PV) gradients, and these bands can serve as space?time evolving waveguides for synoptic and larger-scale flow. Consideration is given to the detection and examination of the along-flow extent and lateral confinement of the waveguides on the dynamic tropopause (i.e., iso-PV surface) and on tropopause-cutting isentropic surfaces. Thereafter a two-part study is undertaken of the possible interaction between such waveguides (i.e., jet streams). First, a highly idealized theoretical model points to the nature of the dynamical linkage that can exist between perturbations on coaligned waveguides. Second, diagnostic analysis of two observed events helps identify the contemporaneous space?time evolution of the jets and serves to illustrate the nature of the transfer of wave activity from the extratropical waveguide onto a subtropical and a polar waveguide, respectively.
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      Tropopause-Level Waveguides

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4209999
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    contributor authorMartius, O.
    contributor authorSchwierz, C.
    contributor authorDavies, H. C.
    date accessioned2017-06-09T16:28:13Z
    date available2017-06-09T16:28:13Z
    date copyright2010/03/01
    date issued2010
    identifier issn0022-4928
    identifier otherams-68441.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4209999
    description abstractJet streams located on the dynamical tropopause are accompanied by coaligned bands of enhanced potential vorticity (PV) gradients, and these bands can serve as space?time evolving waveguides for synoptic and larger-scale flow. Consideration is given to the detection and examination of the along-flow extent and lateral confinement of the waveguides on the dynamic tropopause (i.e., iso-PV surface) and on tropopause-cutting isentropic surfaces. Thereafter a two-part study is undertaken of the possible interaction between such waveguides (i.e., jet streams). First, a highly idealized theoretical model points to the nature of the dynamical linkage that can exist between perturbations on coaligned waveguides. Second, diagnostic analysis of two observed events helps identify the contemporaneous space?time evolution of the jets and serves to illustrate the nature of the transfer of wave activity from the extratropical waveguide onto a subtropical and a polar waveguide, respectively.
    publisherAmerican Meteorological Society
    titleTropopause-Level Waveguides
    typeJournal Paper
    journal volume67
    journal issue3
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/2009JAS2995.1
    journal fristpage866
    journal lastpage879
    treeJournal of the Atmospheric Sciences:;2010:;Volume( 067 ):;issue: 003
    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