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1、NumericalsimulationoftheYellowSeacoldwatermassseasonalchangesAbstract:YellowSeacoldwatermass,isauniquehydrologicalphenomenapresentedintheYellowSea,therehavetwocoldcenterintheSouthYellowSeaandnortherninSummer.TheFVCOMmodel(FVCOM,FiniteVolumeCoastandOceanModel)byf
2、initevolumemethodwithirregulartriangularmeshisusedinthispaper.Basedonthenewterrainandshorelinedata,thetidesandtidalcurrentsaswellastemperatureinYellowandBohaiSeaareaccuratelysimulated.Throughnumericalexperiments,thetemperatureandcirculationoftheYellowSeaColdWate
3、rMassareinvestigatedintheseasonalscaleandtheinfluencesofseaice,windandtidesarediscussed.Firstly,theYellowSea,theBohaiSeatides,positivetrendsweresimulatedandthemainfeaturesofthetides,tideandtide-inducedresidualcurrentEuler;simulationresultsshow:ThemaintidalM2andS
4、2formfourrotatingsystemineachoftheBohaiSeaandtheYellowSea,thetidepointsdeviatetotheChinalandside。Full-daytidalwaveK1and01aredistributedintheYellowSeaandBohaiSeasimilarly。Theyareallhaveano-tidepointclosetothecentralYellowSeaandBohaiStrait,Thesameamplitudelinesare
5、distributedliketheconcentricasthecenteroftheno-tidepoint,Allthetidalwavesystemarecounterclockwise,SofromHebei,ShandongandJiangsucoastalview,thetidalwaveispropagatingfromnorthtosouth.Eulerresidentialcurrentaregenerallyweak,theflowrateisgenerallylessthan5cm/s.万方数据
6、AccordingtohighspatialandtemporalresolutionofNCEP-CFSRdatasets,addingseaicemoduleintothemodelaswellasconsideringtheeffectsoftide,windfield,heatflux,solarshortwaveradiation,precipitationandevaporation,three-dimensionalthermohalinestructureissuccessfullysimulatedt
7、hroughouttheyearinYellowandBohaiSea.AnalysisofmodelresultsindicatesthatthewinterSSTdistributionshowsthetendencyoflowwesthigheastaswellasnorthandsouthhighlowcenterinoverallinYellowandBohaiSea.Inaddition,centralwatersisothermpresentszonaldistributionandeachlayerof
8、theSSTdistributesuniformity.InSpring,thedistributionofSSTismoreuniformonsurface.Withtheincreaseofdepth,coastalandcentraltemperaturedifferenceincreasesgradually,theund