摘要
Thehigh-resolutionWeatherResearchandForecasting(WRF)modeliscoupledtothePrincetonOceanModel(POM)toinvestigatetheeffectofair-seainteractionduringTyphoonKaemithatformedintheNorthwestPacificat0000UTC19July2006.Thecoupledmodelcanreasonablyreproducethemajorfeaturesofoceanresponsetothemovingtropicalcyclone(TC)forcing,includingthedeepeningofoceanmixedlayer(ML),coolingofseasurfacetemperature(SST),anddecayingoftyphoon.DuetotheappearanceofmaximumSSTcoolingtotheleftofthesimulatedtyphoontrack,twopointsrespectivelylocatedtotheleft(16.25N,130.1E,namedasA,themaximumSSTcoolingregion)andright(17.79N,130.43E,namedasB)ofthetyphoontrackaretakenasthesamplingpointstostudythemechanismsofSSTcooling.ThelowtemperatureatpointAhasagoodcorrelationwiththe10-mwindsbutdoesnotpersistforalongtime,whichillustratesthatthetemperaturedroppingproducedbyupwellingisaquickprocess.Althoughthewind-currentresonancecausesoscillationstotheleftoftyphoontrackatpointA,thefluctuationisnotsostrongasthatatpointB.ThethinMLandupwellingproducedbytheEkmanpumpingfromstrong10-mwindsarethemainreasonofmaximumSSTcoolingappearingtotheleftofthetyphoontrack.Duetoweaker10-mwindsandthickerandwarmerMLatpointB,thecolderwaterunderthethermoclineissurpressedandthetemperaturedroppingisnotdramaticwhenthestrongest10-mwindsoccur.Afterwards,thetemperaturegraduallydecreases,whichisfoundtobecausedbytheinertialoscillationsofthewind-currentsystem.
出版日期
2011年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)