KINEMATIC ANALYSIS OF TYPHOON POLLY (No.9216)

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    摘要 WepartitiontheobservedwindfieldintorotationalanddivergentwindfieldstoanalyzethestreamfieldofTy-phoonPolly(No.9216),whichlandedon31August1992andcausedsevereweatherandlargedamageintheeasternChina.Theresultsindicatethatthepreservationoftyphoonintensityafterlandingandtheheavyrainfalltookplaceonthenorthernperipheryoftyphoonareduetothestrongdivergentwindsontheregionsoflowleveljet(LLJ)andhighleveljet(HLJ)aroundthetyphoon.ThedirectionofdivergentwindsintheLLJisperpendiculartotheobservedwind.But,thedirectionofdivergentwindsaroundtheHLJaxisisparalleltotheobservedwinds.Thestreamfunctionandtherotationalwindcorrespondingtothehorizontalvorticitydisplaytheverticalcirculationassociatedwiththeheavyrain,whichisstrongerthantheverticalcirculationaroundthetyphooncenter.Thethree-dimensionaltrajectoriesexhibitthewarmandmoistairparcelsofLLJtravelingnorthwardintotheheavyrainfallregionandascending,thenturningeastwardintheHLJ.
    机构地区 不详
    出处 《气象学报:英文版》 1994年4期
    出版日期 1994年04月14日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
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