Resumen de AERONET sunphotometer products and backscatter lidar data: Systematic intercomparison over the city of São Paulo, Brazil

Patricia Sawamura, Eduardo Landulfo

• Biomass burning is one of the largest sources of anthropogenic aerosols. Particles from biomass burning can affect the global atmospheric chemistry and the Earth's climate and South America is responsible for 30% of all tropical occurrences. Although São Paulo (Brazil) is approximately 2, 000 km away from the main biomass burning sources, the smoke can be transported because the particles, mostly from accumulation mode, can remain in the atmosphere for a week approximately. In this work we looked for signatures of biomass burning smoke transports from the source areas in Amazon and Central Brazilian regions into São Paulo by analyzing the annual evolution of the optical parameters and the relation between the lidar ratio S obtained from lidar and AERONET data. Two methods of obtaining S and aerosol optical thickness ? a at 532 from AERONET data are discussed and showed to be compatible to each other. The extinction-tobackscatter ratios from LIDAR were found systematically smaller than those from AERONET data and the seasonal signature within the lidar dataset was not clear.