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1、RemoteSensingofEnvironment113(2009)610–621ContentslistsavailableatScienceDirectRemoteSensingofEnvironmentjournalhomepage:www.elsevier.com/locate/rseSpectraloptimizationforconstituentretrievalinCase2watersII:ValidationstudyintheChesapeakeBayaa,?,L.W.Har
2、dingJr.baC.P.Kuchinke,H.R.Gordon,K.J.VossaDepartmentofPhysics,UniversityofMiami,POBox248046,CoralGables,Florida33124,USAbHornPointLaboratory,UniversityofMarylandCenterforEnvironmentalScience,Box775/2020HornsPointRoad,Cambridge,Maryland21613,USA.article
3、infoabstractArticlehistory:Coastalwaters(Case2)aregenerallymoreopticallycomplexthanoceanicwatersandcontainmuchhigherReceived31October2008quantitiesofcoloreddetritalmatter(CDM,acombinationofdissolvedorganicmatteranddetritalReceivedinrevisedform31October
4、2008particulates)aswellassuspendedsediment.ExclusionofCDMintheretrievalcanleadtoanoverestimationAccepted1November2008ofchlorophyllaconcentration(C).WepresentavalidationofaCase2versionofthecoupledspectraloptimizationalgorithm(SOA)forsimultaneousatmosphe
5、riccorrectionandwaterparameterretrievalusingKeywords:Sea-viewingWideField-of-viewSensor(SeaWiFS)satelliteoceancolordata.ModelingofwaterconstituentsSatelliteOceanographyusestheGarver,SiegelandMaritorena(GSM)semi-analyticbio-opticalmodellocallytunedforCh
6、esapeakeOceancolorSeaWiFSBay.ThisincludesaparameterizationforCDMthroughitsabsorptionspectrum.AtmosphericcorrectionSOA-retrievedCandCDMarecomparedwithinsitumeasurementsinChesapeakeBay.ResultsarealsoCase2waterscomparedwithoutputfromtwoalternatemodels1)th
7、estandardalgorithm(Std)and2)thestandardChlorophyllaatmosphericcorrectioncombinedwiththelocallytunedGSMmodel(StdGSM).ThecomparisonsindicatethatColoredDissolvedMaterialtheSOAisaviablealternativetobothgivenmodelsinChesapeakeBay.Incontrast,StdGSMappearstor
8、equireBackscatteringimprovementbeforeitcanbeconsideredforoperationaluseinthesewaters.PerhapsthemostimportantresultBio-opticsisthehigh-qualityofCDMretrievalswiththeSOA.TheysuggestthatthereisvalueaddedusingtheSOAmethodinChesapeakewaters,a
