黄海冷水团季节性变化的数值模拟

黄海冷水团季节性变化的数值模拟

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时间:2019-03-01

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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

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