EXPERIMENTS OF SEA ICE SIMULATION-中国Betway体育网页登陆

摘要 Asasubstitutefortheoriginaldisplacedpolegrids,asimplerotatedsphericalcoordinatesystemwasintroducedintotheCommunitySeaIceModelversion4(CSIM4),whichisacomponentoftheCommunityClimateSystemModel(CCSM)oftheAmericanNationalCenterofAtmosphericResearch(NCAR),todealwiththe'poleproblems'.Inthenewcoordinates,boththegeographicalNorthPoleandSouthPolelieinthemodelequatorandgridsizesnearthepolarregionaremoreuniform.WithreanalysisdatasetofAmericanNationalCentersforEnvironmentPrediction(NCEP)andLevitusdatasetwithoutconsideringsub-mixedlayerheatflux,themodelwasintegratedfor100yearswiththermodynamicsprocessinvolvedonlyintheformer49yearsandbothdynamicandthermodynamicprocessesinvolvedinthelefttime.Innerconsistencyofmodelresultswascheckedwithnocontradictionfound.Theresultsoflast10years'modeloutputwereanalyzedanditisshownthatthesimulatedseaiceseasonalvariationisrationalwhereasseaiceextentintheBarentsSeainwinterislargerthanthatofobservation.Numericalexperimentoninfluenceofsub-mixedlayerheatfluxwasalsocarriedoutanditisshownthatthesub-mixedlayerheatfluxcanmodulateseasonalvariationofseaicegreatly.Asamodelcomponent,theseaicemodelwithrotatedsphericalcoordinateswascoupledwithothermodels(theoceanicgeneralcirculationmodelistheLASG/IAPClimateSystemOceanModel(LICOM)withreducedgrid,othermodelsarecomponentsofNCARCCSM2)formingaclimatesystemmodelanditspreliminaryresultswerealsogivenbriefly.

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EXPERIMENTS OF SEA ICE SIMULATION

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