THE RELATIONSHIPS BETWEEN TROPICAL CYCLONE TRACKS AND LOCAL SST OVER THE WESTERN NORTH PACIFIC

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摘要 TropicalCyclone(TC)tracksoverthewesternNorthPacific(WNP)during1949–2007,obtainedfromChinaMeteorologicalAdministration/ShanghaiTyphooninstitute,areclassifiedintothreetracktypes.ThesetypesarethemainpathwaysbywhichTCsinfluencethecoastofEastAsia.Therelationshipsbetweenlocalseasurfacetemperature(SST)inWNPandTCtracksarerevealed.ResultsshowthatthelocalSSTplaysanimportantroleinTCtracks,thoughtherelationshipsbetweenlocalSSTandthefrequenciesofdifferentTCtracksareverydissimilar.ThelocalSSThassignificantpositivecorrelationwithnorthwest-pathTCs,andnegativecorrelationwithrecurving-pathTCs.However,thewest-pathTCsdonothavestatisticallysignificantrelationshipwiththelocalSST.TheupperseatemperatureanomalieswhichinfluenceTCtrackslastaboutsixmonthsbeforeTCoccurrence.FurtheranalysisindicatesthattheoceanconditionsinfluenceTCtracksbymodifyingtheatmosphericcirculation,andthenthemodifiedatmosphericcirculationcanaffectTC’sgenesislocationandmotion.
机构地区 不详
出版日期 2011年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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