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1、AtmosphericEnvironment79(2013)36e40ContentslistsavailableatSciVerseScienceDirectAtmosphericEnvironmentjournalhomepage:www.elsevier.com/locate/atmosenvTechnicalnoteRetrievalofmulti-wavelengthaerosollidarratioprofilesusingRamanscatteringandMiebackscatteringsignalsabca,*aJiaSu,ZhaoyanLiu,YonghuaWu,
2、M.PatrickMcCormick,LiqiaoLeiaCenterforAtmosphericSciences,DepartmentofAtmosphericandPlanetarySciences,HamptonUniversity,Hampton,VA23668,USAbNationalInstituteofAerospace,Hampton,VA23666-6147,USAcOpticalRemoteSensingLaboratory,TheCityCollegeofNewYork,NewYork10031,USAarticleinfoabstractArticlehist
3、ory:WeadvanceanovelretrievaltechniquethatcombinesaRamanandmulti-wavelengthelasticback-Received17December2012scatteredsignalstoretrievemulti-wavelengthlidarratioprofilesofaerosol.WithprofileofbackscatterReceivedinrevisedformcoefficientsat355nmretrievedfromelasticbackscattersignalat355nmandRamanscat
4、teringsignalat7June2013387nm,lidarratioprofilescanbecalculatedat532nmand1064nmfromtheelasticbackscattersignalsAccepted11June2013atthesewavelengths,takingadvantagethatthe532nm/355nmand1064nm/355nmbackscatterratiosaregenerallyapproximatelyequalfortwoneighboringrangebins.Thistechniquehasbeentestedu
5、singKeywords:numericalsimulationsandappliedtolidarmeasurementsattheHamptonUniversity,Hampton,Virginia.AerosolÓ2013ElsevierLtd.Allrightsreserved.LidarratioMulti-wavelength1.Introductionvaryforalargerange(Mülleretal.,2007;Jossetetal.,2011;Burtonetal.,2012).Inthepracticeofbackscatterlidardataproce
6、ssing,theAtmosphericaerosolshaveasignificantimpactonclimatelidarratioisusuallyselectedbasedonthebestknowledgeofthechangethroughthescatteringandabsorptionofincomingsolaraerosoltypegainedfromthelidarmeasurementandotherinfor-andoutgoingthermalradiation(Charlsonetal.,1992;Liou,1986).mationsuchasgeol
7、ocation(Omaretal.,2005).However,aselectedTheyalsoinfluencetheenvironmentandourecology.Anaccuratelidarratiomaynotberepresentativewhentheaerosolcompositionmeasurementoftheopticalparametersofaerosolscanimproveourisnotuniformthroughout
