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Aerosol lidar intercomparison in the framework of the EARLINET project: 3. Raman lidar algorithm for aerosol extinction, backscatter and lidar ratio.

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hdl:2117/13214

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Pappalardo, Gelsomina
Amodeo, Aldo
Pandolfi, Marco
Wandinger, Ulla
Ansmann, Albert
Bösenberg, Jens
Matthias, Volker
Amiridis, Vassilis
De Tomasi, Ferdinando
Frioud, Max
Iarlori, Marco
Komguem, Leonce
Papayannis, Alexandros
Rocadenbosch Burillo, FranciscoMés informacióMés informacióMés informació
Wang, Xuan
Document typeArticle
Defense date2004-10-31
PublisherOPTICAL SOC AMER
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 2.5 Generic
This work is protected by the corresponding intellectual and industrial property rights. Except where otherwise noted, its contents are licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 2.5 Generic
Abstract
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%.
CitationG. Pappalardo et al. (15 autores en representación de las instituciones participantes en el proyecto europeo EARLINET). (2004). Aerosol lidar intercomparison in the framework of the EARLINET project: 3. Raman lidar algorithm for aerosol extinction, backscatter and lidar ratio.. APPLIED OPTICS , 43 (28): 5370-5385. ISSN:0003-6935 
URIhttp://hdl.handle.net/2117/13214
ISSN0003-6935
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