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    Omega Diagnosis of a Cold Vortex with Severe Convection

    Source: Weather and Forecasting:;1988:;volume( 003 ):;issue: 004::page 296
    Author:
    Chen, Shou-Jun
    ,
    Bai, Le-sheng
    ,
    Barnes, Stanley L.
    DOI: 10.1175/1520-0434(1988)003<0296:ODOACV>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A real-time quasi-geostrophic omega diagnostic scheme, based on Hoskins' Q-vector analysis and developed by Barnes, was applied to a cold mesoscale vortex with severe convection over northeast China in summer. The limited area model used at the Beijing Weather Center did not predict this event because the baroclinic forcing was rather weak, but the Q-vector analysis clearly indicated the forcing 12 h before. In addition to Barnes' diagnostics, we estimate divergence tendency in low levels through computation of the rotational component of the Q-vector. Combined with the diagnosed stability tendency, moisture analysis, and low-level wind convergence zone, the convective area can be identified. This microcomputer diagnostic-graphics scheme, when coupled with intelligent use of conventional data, has potential as an aid for local short-range weather forecasting.
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      Omega Diagnosis of a Cold Vortex with Severe Convection

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4161290
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    contributor authorChen, Shou-Jun
    contributor authorBai, Le-sheng
    contributor authorBarnes, Stanley L.
    date accessioned2017-06-09T14:41:36Z
    date available2017-06-09T14:41:36Z
    date copyright1988/12/01
    date issued1988
    identifier issn0882-8156
    identifier otherams-2460.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4161290
    description abstractA real-time quasi-geostrophic omega diagnostic scheme, based on Hoskins' Q-vector analysis and developed by Barnes, was applied to a cold mesoscale vortex with severe convection over northeast China in summer. The limited area model used at the Beijing Weather Center did not predict this event because the baroclinic forcing was rather weak, but the Q-vector analysis clearly indicated the forcing 12 h before. In addition to Barnes' diagnostics, we estimate divergence tendency in low levels through computation of the rotational component of the Q-vector. Combined with the diagnosed stability tendency, moisture analysis, and low-level wind convergence zone, the convective area can be identified. This microcomputer diagnostic-graphics scheme, when coupled with intelligent use of conventional data, has potential as an aid for local short-range weather forecasting.
    publisherAmerican Meteorological Society
    titleOmega Diagnosis of a Cold Vortex with Severe Convection
    typeJournal Paper
    journal volume3
    journal issue4
    journal titleWeather and Forecasting
    identifier doi10.1175/1520-0434(1988)003<0296:ODOACV>2.0.CO;2
    journal fristpage296
    journal lastpage304
    treeWeather and Forecasting:;1988:;volume( 003 ):;issue: 004
    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