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dc.contributor.authorWagner, F.
dc.contributor.authorMueller, D.
dc.contributor.authorAnsmann, A.
dc.date.accessioned2014-01-20T11:00:28Z
dc.date.available2014-01-20T11:00:28Z
dc.date.issued2001-10-16
dc.identifier.citationWagner , F , Mueller , D & Ansmann , A 2001 , ' Comparison of the radiative impact of aerosols derived from vertically resolved (lidar) and vertically integrated (Sun photometer) measurements : Example of an Indian aerosol plume ' Journal of Geophysical Research: Atmospheres , vol. 106 , no. D19 , pp. 22861-22870 . https://doi.org/10.1029/2001JD000320
dc.identifier.issn2169-897X
dc.identifier.otherPURE: 1982519
dc.identifier.otherPURE UUID: 80ac93e0-fb72-4c9b-b1db-406fe2c47f8b
dc.identifier.otherWOS: 000171538600021
dc.identifier.otherScopus: 0034754609
dc.identifier.urihttp://hdl.handle.net/2299/12574
dc.description.abstractRadiative forcing calculations both at the top of the atmosphere (TOA) and at the surface were done for vertically varying particle properties and their approximation through vertically constant properties. The data sets followed from combined six wavelength aerosol lidar and Sun photometer measurements made on March 25, 1999, in the framework of the Indian Ocean Experiment (INDOEX). On this day a multilayered pollution plume, which was characterized by highly absorbing particles, extended to 3.5 km above ground. The aerosol optical thickness was as high as 0.57 at 530 nm. The uncertainty of the radiative forcing can be as large as 30% owing to the uncertainty of the refractive index and size distribution, which are only given as column-averaged values if Sun photometer measurements are used alone. The radiative forcing calculated for an ocean albedo of 0.05 varies between -5 and -12 W m(-2) at TOA and -55 and -81 W m(-2) at the surface, whereas the forcing determined by height dependent aerosol properties is about -10 W m(-2) at TOA and -60 W m(-2) at the surface. The forcing efficiency is in the range -11 and -24 W m(-2) per unit optical thickness at TOA and -101 and -154 W m(-2) per unit optical thickness at the surface.en
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofJournal of Geophysical Research: Atmospheres
dc.subjectMICROPHYSICAL PARTICLE PARAMETERS
dc.subjectATLANTIC
dc.subjectANTHROPOGENIC AEROSOLS
dc.subjectEXTINCTION
dc.subjectBACKSCATTER LIDAR
dc.subjectRAYLEIGH-SCATTERING
dc.subjectCLIMATE
dc.subjectTERRESTRIAL ATMOSPHERE
dc.subjectSULFATE AEROSOLS
dc.subjectOCEAN EXPERIMENT
dc.titleComparison of the radiative impact of aerosols derived from vertically resolved (lidar) and vertically integrated (Sun photometer) measurements : Example of an Indian aerosol plumeen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
rioxxterms.versionofrecordhttps://doi.org/10.1029/2001JD000320
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstyperestrictedAccess


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