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

    Numerical Investigations with a Hybrid Isentropic–Sigma Model. Part I: Normal-Mode Characteristics

    Source: Journal of the Atmospheric Sciences:;1991:;Volume( 048 ):;issue: 018::page 2005
    Author:
    Pierce, R. Bradley
    ,
    Reames, Fred M.
    ,
    Zapotocny, Tom H.
    ,
    Johnson, Donald R.
    ,
    Wolf, Bart J.
    DOI: 10.1175/1520-0469(1991)048<2005:NIWAHI>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: In a validation experiment of a hybrid isentropic?sigma coordinate primitive equation model developed at the University of Wisconsin (the UW ??σ model), an initial value technique is used to investigate numerically the normal-mode characteristics of baroclinically amplifying disturbances over a spectrum of meteorologically significant wavelength. The experiments are designed to determine the impact of coupling an isentropic-coordinate free atmospheric domain to a sigma-coordinate planetary boundary layer (PBL) on the normal-mode characteristics. The growth rate and phase speed spectra of the most unstable normal modes are obtained for an analytically prescribed zonal flow field. The evolution and vertical structure of the kinetic energy, energy conversions, growth rates, and geopotential fields are investigated. Several modifications have been made to earlier versions of the UW ??σ model to overcome noise introduced by adjustments associated with emerging and submerging grid volumes at the sigma?isentropic interface. With these modifications, the hybrid model accurately simulates the evolution and structure of normal-mode baroclinic disturbances for all wavenumbers considered except for wavenumber two. The normal-mode growth rate and phase speed spectra compare well with previous studies using standard sigma coordinate models. There is no evidence of aliasing the baroclinic normal-mode characteristics due to the coupling of isentropic and sigma domains.
    • Download: (1.386Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Numerical Investigations with a Hybrid Isentropic–Sigma Model. Part I: Normal-Mode Characteristics

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4156840
    Collections
    • Journal of the Atmospheric Sciences

    Show full item record

    contributor authorPierce, R. Bradley
    contributor authorReames, Fred M.
    contributor authorZapotocny, Tom H.
    contributor authorJohnson, Donald R.
    contributor authorWolf, Bart J.
    date accessioned2017-06-09T14:30:31Z
    date available2017-06-09T14:30:31Z
    date copyright1991/09/01
    date issued1991
    identifier issn0022-4928
    identifier otherams-20595.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4156840
    description abstractIn a validation experiment of a hybrid isentropic?sigma coordinate primitive equation model developed at the University of Wisconsin (the UW ??σ model), an initial value technique is used to investigate numerically the normal-mode characteristics of baroclinically amplifying disturbances over a spectrum of meteorologically significant wavelength. The experiments are designed to determine the impact of coupling an isentropic-coordinate free atmospheric domain to a sigma-coordinate planetary boundary layer (PBL) on the normal-mode characteristics. The growth rate and phase speed spectra of the most unstable normal modes are obtained for an analytically prescribed zonal flow field. The evolution and vertical structure of the kinetic energy, energy conversions, growth rates, and geopotential fields are investigated. Several modifications have been made to earlier versions of the UW ??σ model to overcome noise introduced by adjustments associated with emerging and submerging grid volumes at the sigma?isentropic interface. With these modifications, the hybrid model accurately simulates the evolution and structure of normal-mode baroclinic disturbances for all wavenumbers considered except for wavenumber two. The normal-mode growth rate and phase speed spectra compare well with previous studies using standard sigma coordinate models. There is no evidence of aliasing the baroclinic normal-mode characteristics due to the coupling of isentropic and sigma domains.
    publisherAmerican Meteorological Society
    titleNumerical Investigations with a Hybrid Isentropic–Sigma Model. Part I: Normal-Mode Characteristics
    typeJournal Paper
    journal volume48
    journal issue18
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1991)048<2005:NIWAHI>2.0.CO;2
    journal fristpage2005
    journal lastpage2024
    treeJournal of the Atmospheric Sciences:;1991:;Volume( 048 ):;issue: 018
    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