THE RELATIONSHIPS BETWEEN TROPICAL CYCLONE TRACKS AND LOCAL SST OVER THE WESTERN NORTH PACIFIC-中国Betway体育网页登陆

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.

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

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