YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Monthly Weather Review
    • View Item
    •   YE&T Library
    • AMS
    • Monthly Weather Review
    • 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

    Dynamic Initialization of a Three-Dimensional Primitive-Equation Model of Hurricane Alma of 1962

    Source: Monthly Weather Review:;1977:;volume( 105 ):;issue: 010::page 1266
    Author:
    Hoke, James E.
    ,
    Anthes, Richard A.
    DOI: 10.1175/1520-0493(1977)105<1266:DIOATD>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A technique of dynamic initialization previously studied with two-dimensional models is applied to a forecast of Hurricane Alma (1962) over a 24 h period. In the dynamic-initialization experiment, first-guess horizontal winds and the surface pressure in a four-layer primitive-equation model are driven, or relaxed, toward the observed fields during a 12 h preforecast integration, while the temperature and moisture fields are allowed to adjust freely. The observed data are successfully assimilated into the model during the dynamic initialization. A reasonable 12 h forecast is produced in terms of storm track and maintenance of storm structure. The reduced dynamic imbalance at the beginning of the forecast utilizing dynamic initialization is beneficial. First of all, because the model state is not obscured by nonmeterological oscillations, this portion of the forecast is more useful than that of a forecast without dynamic initialization. Second, the meteorologically important features of the atmospheric circulation are not modified as much by a large mutual adjustment of the mass and momentum fields at the outset of the forecast. Also, the additional integration time in the dynamic-initialization experiment permits the small-scale forcing processes in the model to generate a finer scale precipitation band than present in the initial conditions. The forecast of the storm track was slightly better during the first 6 h but was slightly worse by the end of the forecast, in the experiment with dynamic initialization, however. This latter result, together with the fact that these experiments pertain to only one case, makes the conclusion of the superiority of the dynamic-initialization scheme tentative.
    • Download: (1.178Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Dynamic Initialization of a Three-Dimensional Primitive-Equation Model of Hurricane Alma of 1962

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4199720
    Collections
    • Monthly Weather Review

    Show full item record

    contributor authorHoke, James E.
    contributor authorAnthes, Richard A.
    date accessioned2017-06-09T16:01:45Z
    date available2017-06-09T16:01:45Z
    date copyright1977/10/01
    date issued1977
    identifier issn0027-0644
    identifier otherams-59190.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4199720
    description abstractA technique of dynamic initialization previously studied with two-dimensional models is applied to a forecast of Hurricane Alma (1962) over a 24 h period. In the dynamic-initialization experiment, first-guess horizontal winds and the surface pressure in a four-layer primitive-equation model are driven, or relaxed, toward the observed fields during a 12 h preforecast integration, while the temperature and moisture fields are allowed to adjust freely. The observed data are successfully assimilated into the model during the dynamic initialization. A reasonable 12 h forecast is produced in terms of storm track and maintenance of storm structure. The reduced dynamic imbalance at the beginning of the forecast utilizing dynamic initialization is beneficial. First of all, because the model state is not obscured by nonmeterological oscillations, this portion of the forecast is more useful than that of a forecast without dynamic initialization. Second, the meteorologically important features of the atmospheric circulation are not modified as much by a large mutual adjustment of the mass and momentum fields at the outset of the forecast. Also, the additional integration time in the dynamic-initialization experiment permits the small-scale forcing processes in the model to generate a finer scale precipitation band than present in the initial conditions. The forecast of the storm track was slightly better during the first 6 h but was slightly worse by the end of the forecast, in the experiment with dynamic initialization, however. This latter result, together with the fact that these experiments pertain to only one case, makes the conclusion of the superiority of the dynamic-initialization scheme tentative.
    publisherAmerican Meteorological Society
    titleDynamic Initialization of a Three-Dimensional Primitive-Equation Model of Hurricane Alma of 1962
    typeJournal Paper
    journal volume105
    journal issue10
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1977)105<1266:DIOATD>2.0.CO;2
    journal fristpage1266
    journal lastpage1280
    treeMonthly Weather Review:;1977:;volume( 105 ):;issue: 010
    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