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          Institute: MPI für Meteorologie     Collection: Climate Processes     Display Documents



  history
ID: 223475.0, MPI für Meteorologie / Climate Processes
Aerosol lidar intercomparison in the framework of the EARLINET project. 3. Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio
Authors:Pappalardo, G.; Amodeo, A.; Pandolfi, M.; Wandinger, U.; Ansmann, A.; Bösenberg, Jens; Matthias, Volker; Amirdis, V.; De Tomasi, F.; Frioud, M.; Iarlori, M.; Komguem, L.; Papayannis, A.; Rocadenbosch, F.; Wang, X.
Language:English
Date of Publication (YYYY-MM-DD):2004-10-01
Title of Journal:Applied Optics
Journal Abbrev.:Appl. Optics
Volume:43
Issue / Number:28
Start Page:5370
End Page:5385
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:An intercomparison of the algorithms used to retrieve aerosol extinction and backscatter starting from Raman lidar signals has been performed by 11 groups of lidar scientists involved in the European Aerosol Research Lidar Network (EARLINET). This intercomparison is part of an extended quality assurance program performed on aerosol lidars in the EARLINET. Lidar instruments and aerosol backscatter algorithms were tested separately. The Raman lidar algorithms were tested by use of synthetic lidar data, simulated at 355, 532, 386, and 607 nm, with realistic experimental and atmospheric conditions taken into account. The intercomparison demonstrates that the data-handling procedures used by all the lidar groups provide satisfactory results. Extinction profiles show mean deviations from the correct solution within 10% in the planetary boundary layer (PBL), and backscatter profiles, retrieved by use of algorithms based on the combined Raman elastic-backscatter lidar technique, show mean deviations from solutions within 20% up to 2 km. The intercomparison was also carried out for the lidar ratio and produced profiles that show a mean deviation from the solution within 20% in the PBL. The mean value of this parameter was also calculated within a lofted aerosol layer at higher altitudes that is representative of typical layers related to special events such as Saharan dust outbreaks, forest fires, and volcanic eruptions. Here deviations were within 15%. (C) 2004 Optical Society of America.
Free Keywords:WATER-VAPOR; SIZE DISTRIBUTION; REFRACTIVE-INDEX; SCATTERING; ATMOSPHERE; PROFILES; COEFFICIENT; SYSTEM; LASER
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Affiliations:MPI für Meteorologie/Climate Processes/Active Remote Sensing
External Affiliations:CNR, Ist Metodol Anal Ambientale, I-85050 Potenza, Italy.; Inst Tropospher Res, D-04303 Leipzig, Germany.; Aristotle Univ Thessaloniki, Lab Atmospher Phys, Thessaloniki 54124, Greece.; Univ Lecce, Dipartimento Fis, INFM, I-73100 Lecce, Italy.; Observ Neuchatel, CH-2000 Neuchatel, Switzerland.; Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy.; Univ Wales, Dept Phys, Aberystwyth SY23 3BZ, Dyfed, Wales.; Natl Tech Univ Athens, Dept Phys, Zografos 5780, Greece.; Univ Politecn Catalunya, Dept Signal Theory & Commun, ES-08034 Barcelona, Spain.; Complesso Univ Monte S Angelo, INFM, I-80126 Naples, Italy.
Identifiers:ISI:000224355600013 [ID No:1]
ISSN:0003-6935 [ID No:2]
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