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Proceedings Paper

Lidar measurements of tropospheric aerosol and water vapor profiles during the winter season campaigns over the metropolitan area of Sao Paulo, Brazil
Author(s): Fábio J. S. Lopes; Gregori A. Moreira; Patricia F. Rodrigues; Juan Luis Guerrero-Rascado; Maria F. Andrade; Eduardo Landulfo
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Paper Abstract

The so-called Metropolitan Area of São Paulo, one of the largest megacities in the world, faces several problems related to the air quality due the high concentrations of aerosols produced either by local sources or by long-range transporting. Concerned with the elevated concentrations of aerosol and their impact in the air quality and the climate changes inside MASP, a measurement campaign were conducted during the South hemisphere winter of 2012, when the low temperatures and the low level of precipitation contribute to the poor dispersion of aerosols. A Raman Lidar system and air quality monitoring stations from University of São Paulo and Environment Agency of São Paulo State (CETESB) were employed in order to monitor the increasing of aerosol load in the atmosphere. Satellite data, in synergy with HYSPLIT air masses backward trajectories, were applied to track the aerosol from the long-range distanced regions to Metropolitan Area of São Paulo. In the beginning of September 2012, MASP experienced episodes of high air pollution concentration, reaching Aerosol Optical Depth (AOD) values up to 0.89 at 550 nm and particulate matter concentration up to 293 µ g/cm3 . Particle lidar ratio values of 60 to 70 sr retrieved by a Raman Lidar system at 532 nm provided information of the aerosol type, helping to determine the influence of biomass burning advected from large range distance to megacities such as São Paulo

Paper Details

Date Published: 20 October 2014
PDF: 14 pages
Proc. SPIE 9246, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing X, 92460H (20 October 2014); doi: 10.1117/12.2067374
Show Author Affiliations
Fábio J. S. Lopes, Univ. de São Paulo (Brazil)
Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Gregori A. Moreira, Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Patricia F. Rodrigues, Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Juan Luis Guerrero-Rascado, Instituto Interuniversitario de Investigación del Sistema Tierra en Andalucía (Spain)
Univ. de Granada (Spain)
Maria F. Andrade, Univ. de São Paulo (Brazil)
Eduardo Landulfo, Instituto de Pesquisas Energéticas e Nucleares (Brazil)


Published in SPIE Proceedings Vol. 9246:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing X
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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