Show simple item record

dc.contributor.authorMueller, D.
dc.contributor.authorWandinger, U.
dc.contributor.authorAnsmann, A.
dc.date.accessioned2014-01-22T09:30:27Z
dc.date.available2014-01-22T09:30:27Z
dc.date.issued1999-04-20
dc.identifier.citationMueller , D , Wandinger , U & Ansmann , A 1999 , ' Microphysical particle parameters from extinction and backscatter lidar data by inversion with regularization: theory ' , Applied Optics , vol. 38 , no. 12 , pp. 2346-2357 . https://doi.org/10.1364/AO.38.002346
dc.identifier.issn0003-6935
dc.identifier.otherPURE: 1982937
dc.identifier.otherPURE UUID: 97518fbb-5cd8-429f-8e70-41da9d94a0b3
dc.identifier.otherWOS: 000079725400004
dc.identifier.otherScopus: 0043044720
dc.identifier.urihttp://hdl.handle.net/2299/12603
dc.description.abstractA method is proposed that permits one to retrieve physical parameters of tropospheric particle size distributions, e.g., effective radius, volume, surface-area, and number concentrations, as well as the mean complex refractive index on a routine basis from backscatter and extinction coefficients at multiple wavelengths. The optical data in terms of vertical profiles are derived from multiple-wavelength lidar measurements at 355, 400, 532, 710, 800, and 1064 nm for backscatter data and 355 and 532 nm for extinction data. The algorithm is based on the concept of inversion with regularization. Regularization is performed by generalized cross-validation. This method does not require knowledge of the shape of the particle size distribution and can handle measurement errors of the order of 20%. It is shown that at least two extinction data are necessary to retrieve the particle parameters to an acceptable accuracy. Simulations with monomodal and bimodal logarithmic-normal size distributions show that it is possible to derive effective radius, volume, and surface-area concentrations to an accuracy of +/-50%, the real part of the complex refractive index to +/-0.05, and the imaginary part to +/-50%. Number concentrations may have errors larger than +/-50%. (C) 1999 Optical Society of America.en
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofApplied Optics
dc.subjectSCATTERING MEASUREMENTS
dc.subjectANALYTIC INVERSION
dc.subjectLIGHT-SCATTERING
dc.subjectDIFFUSION BATTERY DATA
dc.subjectFREDHOLM INTEGRAL-EQUATIONS
dc.subjectGENERALIZED CROSS-VALIDATION
dc.subjectAEROSOL SIZE DISTRIBUTION
dc.subjectINFORMATION-CONTENT
dc.subjectANOMALOUS DIFFRACTION APPROXIMATION
dc.subjectREMOTE-SENSING DATA
dc.titleMicrophysical particle parameters from extinction and backscatter lidar data by inversion with regularization: theoryen
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
dcterms.dateAccepted1999-04-20
rioxxterms.versionofrecordhttps://doi.org/10.1364/AO.38.002346
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record