Initial analysis from a Lidar observation campaign of sugar cane fires in the central and western portion of the S̃ao Paulo State - Brazil

• Autor(a) principal: Da Silva Lopes, Fábio Juliano
• Data de Publicação: 2011
• Outros Autores: Held, Gerhard [UNESP], Nakaema, Walter Morinobu, Rodrigues, Patricia Ferrini, Bassan, José Márcio [UNESP], Landulfo, Eduardo
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1117/12.898119; http://hdl.handle.net/11449/72807
• topic: Aerosols; Biomass burning; CALIPSO; LIDAR; Radar; Aerosol optical property; Channel analysis; Field campaign; Growing demand; HYSPLIT model; Lidar observation; Lidar ratio; Lidar systems; Raman lidar system; Satellite observations; Sugar cane fires; Atmospheric aerosols; Biomass; Doppler radar; Optical properties; Optical radar; Remote sensing; Sugar cane; Sugars; Meteorological radar

The central and western portion of the S̃ao Paulo State has large areas of sugar cane plantations, and due to the growing demand for biofuels, the production is increasing every year. During the harvest period some plantation areas are burnt a few hours before the manual cutting, causing significant quantities of biomass burning aerosol to be injected into the atmosphere. During August 2010, a field campaign has been carried out in Ourinhos, situated in the south-western region of S̃ao Paulo State. A 2-channel Raman Lidar system and two meteorological S-Band Doppler Radars are used to indentify and quantify the biomass burning plumes. In addiction, CALIPSO Satellite observations were used to compare the aerosol optical properties detected in that region with those retrieved by Raman Lidar system. Although the campaign yielded 30 days of measurements, this paper will be focusing only one case study, when aerosols released from nearby sugar cane fires were detected by the Lidar system during a CALIPSO overpass. The meteorological radar, installed in Bauru, approximately 110 km northeast from the experimental site, had recorded echoes (dense smoke comprising aerosols) from several fires occurring close to the Raman Lidar system, which also detected an intense load of aerosol in the atmosphere. HYSPLIT model forward trajectories presented a strong indication that both instruments have measured the same air masss parcels, corroborated with the Lidar Ratio values from the 532 nm elastic and 607 nm Raman N2 channel analyses and data retrieved from CALIPSO have indicated the predominance of aerosol from biomass burning sources. © 2011 SPIE.