Abstract
During the period of August-September 2016 an intensive campaign was carried out to assess aerosol properties in São Paulo-Brazil aiming to detect long-range aerosol transport events and to characterize the instrument regarding data quality. Aerosol optical properties retrieved by the GALION - LALINET SPU lidar station and collocated AERONET sunphotometer system are presented as extinction/ backscatter vertical profiles with microphysical products retrieved with GRASP inversion algorithm.
Highlights
According to the Intergovernmental Panel on Climate Change (IPCC) [1], anthropogenic aerosols are responsible for a negative radiative forcing for climate, widely contributing to cooling or warming the atmosphere through different processes such as aerosol-radiation and aerosol-cloud interactions
The mean values and the standard deviation of aerosol optical depth (AOD) at 532 nm retrieved from AERONET were 0.22 ± 0.15 during August to September of 2016
For the RAPEL period, the number of focus fires in the brazillian territory increased around 65% compared to the wet season, according to brazillian National Institute For Space Research INPE
Summary
According to the Intergovernmental Panel on Climate Change (IPCC) [1], anthropogenic aerosols are responsible for a negative radiative forcing for climate, widely contributing to cooling or warming the atmosphere through different processes such as aerosol-radiation and aerosol-cloud interactions. The development of aerosol measurement networks, with rigorous and systematic protocols of measurements is an important step to increase the reliability of aerosol measurements In this context, the Latin America Lidar network (LALINET) [2], has been monitoring the vertical distribution of particle optical properties since 2001, and started to be operative with systematic measurements since 2013. During August and September of 2016 the LALINET São Paulo station (SPU) started a rehearsal performing a preproject field experiment to gather a high quality dataset to assess the atmospheric optical properties during biomass burning events and longrange transportation episodes at Metropolitan Area of São Paulo (MASP)-Brazil (RAPEL campaign). In this work the aerosol properties and microphysical properties using the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) inversion algorithm [5] were retrieved
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