Initial analysis from a lidar observation campaign of sugar cane fires in the central and western portion of the São Paulo State, Brazil

Fábio Juliano da Silva Lopes; Gerhard Held; Walter Morinobu Nakaema; Patricia Ferrini Rodrigues; Jose Marcio Bassan; Eduardo Landulfo

doi:10.1117/12.898119

30 September 2011 Initial analysis from a lidar observation campaign of sugar cane fires in the central and western portion of the São Paulo State, Brazil

Fábio Juliano da Silva Lopes, Gerhard Held, Walter Morinobu Nakaema, Patricia Ferrini Rodrigues, Jose Marcio Bassan, Eduardo Landulfo

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Proceedings Volume 8182, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VII; 818214 (2011) https://doi.org/10.1117/12.898119
Event: SPIE Remote Sensing, 2011, Prague, Czech Republic

Abstract

The central and western portion of the Sao 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 Sao 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.

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Fábio Juliano da Silva Lopes, Gerhard Held, Walter Morinobu Nakaema, Patricia Ferrini Rodrigues, Jose Marcio Bassan, and Eduardo Landulfo "Initial analysis from a lidar observation campaign of sugar cane fires in the central and western portion of the São Paulo State, Brazil", Proc. SPIE 8182, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VII, 818214 (30 September 2011); https://doi.org/10.1117/12.898119

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KEYWORDS

LIDAR

Aerosols

Raman spectroscopy

Combustion

Atmospheric particles

Radar

Satellites

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