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    Sensitivity of ECMWF Analyses-Forecasts of Tropical Cyclones to Cumulus Parameterization

    Source: Monthly Weather Review:;1990:;volume( 118 ):;issue: 009::page 1709
    Author:
    Puri, Kamal
    ,
    Miller, M. J.
    DOI: 10.1175/1520-0493(1990)118<1709:SOEAFO>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The sensitivity of the ECMWF analysis-forecast system for four tropical cyclones during the period spanned by the Australian Monsoon Experiment to cumulus parameterization and model resolution is presented. Two parameterization schemes were compared: namely, the Kuo cumulus parameterization and the Betts-Miller adjustment scheme. Both analyses and forecasts show considerable sensitivity with the Betts-Miller scheme generating more intense cyclonic systems as indicated by maps of sea-level pressure, low-level winds, vorticities, and cross sections in the neighborhood of the cyclones. The Betts-Miller scheme also results in better consistency of the fields in the vertical between the divergent circulation and vertical velocity. Of the two cases considered, one (for tropical cyclone Jason) showed a marked sensitivity to increased model resolution with the higher resolution forecast showing considerable improvement.
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      Sensitivity of ECMWF Analyses-Forecasts of Tropical Cyclones to Cumulus Parameterization

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4202448
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    contributor authorPuri, Kamal
    contributor authorMiller, M. J.
    date accessioned2017-06-09T16:07:56Z
    date available2017-06-09T16:07:56Z
    date copyright1990/09/01
    date issued1990
    identifier issn0027-0644
    identifier otherams-61644.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4202448
    description abstractThe sensitivity of the ECMWF analysis-forecast system for four tropical cyclones during the period spanned by the Australian Monsoon Experiment to cumulus parameterization and model resolution is presented. Two parameterization schemes were compared: namely, the Kuo cumulus parameterization and the Betts-Miller adjustment scheme. Both analyses and forecasts show considerable sensitivity with the Betts-Miller scheme generating more intense cyclonic systems as indicated by maps of sea-level pressure, low-level winds, vorticities, and cross sections in the neighborhood of the cyclones. The Betts-Miller scheme also results in better consistency of the fields in the vertical between the divergent circulation and vertical velocity. Of the two cases considered, one (for tropical cyclone Jason) showed a marked sensitivity to increased model resolution with the higher resolution forecast showing considerable improvement.
    publisherAmerican Meteorological Society
    titleSensitivity of ECMWF Analyses-Forecasts of Tropical Cyclones to Cumulus Parameterization
    typeJournal Paper
    journal volume118
    journal issue9
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1990)118<1709:SOEAFO>2.0.CO;2
    journal fristpage1709
    journal lastpage1742
    treeMonthly Weather Review:;1990:;volume( 118 ):;issue: 009
    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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