摘要
Thevariabilityinglobaloceanicevaporationdatasetswasexaminedfortheperiod1988-2000.ThesedatasetsaresatelliteestimatesbasedonbulkaerodynamicformulationsandincludetheNASA/GoddardSpaceFlightCenterSatellite-basedSurfaceTurbulentFluxversion2(GSSTF2),theJapanese-oceanfluxusingremotesensingobservations(J-OFURO),andtheHamburgOcean-AtmosphereParametersandFluxesfromSatelliteversion2(HOAPS2).TheNationalCenterforEnvironmentalPrediction(NCEP)reanalysisisalsoincludedforcomparison.Anincreaseinglobalaveragesurfacelatentheatflux(SLHF)canbeobservedinallthedatasets.Empiricalmodedecomposition(EMD)showslong-termincreasesthatstartedaround1990forallremotesensingdatasets.TheeffectofMt.Pinatuboeruptionin1991isclearlyevidentinHOAPS2butisindependentofthelong-termincrease.Linearregressionanalysesshowincreasesof9.4%,13.0%,7.3%,and3.9%forGSSTF2,J-OFURO,HOAPS2andNCEP,fortheperiodsofthedatasets.Empiricalorthogonalfunction(EOF)analysesshowthatthepatternofthefirstEOFofalldatasetsisconsistentwithadecadalvariationassociatedwiththeenhancementofthetropicalHadleycirculation,whichissupportedbyothersatelliteobservations.ThesecondEOFofallfourdatasetsisanENSOmode,andthecorrelationsbetweentheirtimeseriesandanSOIare0.74,0.71,0.59,and0.61forGSSTF2,J-OFURO,HOAPS2,andNCEPinthatorder.WhentheHadleymodesareremovedfromtheremotesensingdata,theresidueglobalincreasesarereducedto2.2%,7.3%,and<1%forGSSTF2,J-OFUROandHOAPS,respectively.IftheENSOmodeisusedasacalibrationstandardforthedatasets,theHadleymodeisatleastcomparableto,ifnotlargerthan,theENSOmodeduringourstudyperiod.
出版日期
2008年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
