YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Barotropic and Baroclinic Annular Variability in the Southern Hemisphere

    Source: Journal of the Atmospheric Sciences:;2013:;Volume( 071 ):;issue: 004::page 1480
    Author:
    Thompson, David W. J.
    ,
    Woodworth, Jonathan D.
    DOI: 10.1175/JAS-D-13-0185.1
    Publisher: American Meteorological Society
    Abstract: he leading patterns of large-scale climate variability in the Southern Hemisphere are examined in the context of extratropical kinetic energy. It is argued that variability in the Southern Hemisphere extratropical flow can be viewed in the context of two distinct and largely independent structures, both of which exhibit a high degree of annularity: 1) a barotropic structure that dominates the variance in the zonal-mean kinetic energy and 2) a baroclinic structure that dominates the variance in the eddy kinetic energy. The former structure corresponds to the southern annular mode (SAM) and has been extensively examined in the literature. The latter structure emerges as the leading principal component time series of eddy kinetic energy and has received seemingly little attention in previous work.The two structures play very different roles in cycling energy through the extratropical troposphere. The SAM is associated primarily with variability in the meridional propagation of wave activity, has a surprisingly weak signature in the eddy fluxes of heat, and can be modeled as Gaussian red noise with an e-folding time scale of approximately 10 days. The baroclinic annular structure is associated primarily with variations in the amplitude of vertically propagating waves, has a very weak signature in the wave fluxes of momentum, and exhibits marked quasi periodicity on time scales of approximately 25?30 days. Implications for large-scale climate variability are discussed.
    • Download: (1.914Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Barotropic and Baroclinic Annular Variability in the Southern Hemisphere

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4219285
    Collections
    • Journal of the Atmospheric Sciences

    Show full item record

    contributor authorThompson, David W. J.
    contributor authorWoodworth, Jonathan D.
    date accessioned2017-06-09T16:56:33Z
    date available2017-06-09T16:56:33Z
    date copyright2014/04/01
    date issued2013
    identifier issn0022-4928
    identifier otherams-76799.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4219285
    description abstracthe leading patterns of large-scale climate variability in the Southern Hemisphere are examined in the context of extratropical kinetic energy. It is argued that variability in the Southern Hemisphere extratropical flow can be viewed in the context of two distinct and largely independent structures, both of which exhibit a high degree of annularity: 1) a barotropic structure that dominates the variance in the zonal-mean kinetic energy and 2) a baroclinic structure that dominates the variance in the eddy kinetic energy. The former structure corresponds to the southern annular mode (SAM) and has been extensively examined in the literature. The latter structure emerges as the leading principal component time series of eddy kinetic energy and has received seemingly little attention in previous work.The two structures play very different roles in cycling energy through the extratropical troposphere. The SAM is associated primarily with variability in the meridional propagation of wave activity, has a surprisingly weak signature in the eddy fluxes of heat, and can be modeled as Gaussian red noise with an e-folding time scale of approximately 10 days. The baroclinic annular structure is associated primarily with variations in the amplitude of vertically propagating waves, has a very weak signature in the wave fluxes of momentum, and exhibits marked quasi periodicity on time scales of approximately 25?30 days. Implications for large-scale climate variability are discussed.
    publisherAmerican Meteorological Society
    titleBarotropic and Baroclinic Annular Variability in the Southern Hemisphere
    typeJournal Paper
    journal volume71
    journal issue4
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/JAS-D-13-0185.1
    journal fristpage1480
    journal lastpage1493
    treeJournal of the Atmospheric Sciences:;2013:;Volume( 071 ):;issue: 004
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian