A comparison study of regional atmospheric simulations with and elastic backscattering lidar and sunphotometry in an urban area
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2009
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Atmospheric Chemistry and Physics
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Resumo
We describe a comparison study of aerosol optical thickness (AOT) from numerical
simulations using a regional atmospheric model with an elastic backscattering lidar
operating at 532 nm and a sunphotometer belonging to the AERONET network at São
Paulo (23º S 46º W) city, Brazil, a very populated urban area. The atmospheric model
includes an aerosol emission, transport and deposition module coupled to a radiative
transfer parameterization, which takes the interaction between aerosol particles and
short and long wave radiation into account. A period of one week was taken as case
study during the dry season (late August) when intense biomass burning activities occur in remote areas in South America, and meteorological conditions disfavor the
pollution dispersion in the city of São Paulo. The situation showed points out how smoke from biomass burning in remote areas is transported to the Southeast part
of Brazil and affects the optical atmospheric conditions in São Paulo. The numerical simulations are corroborated by in-situ measurements of Aerosol Optical Thickness.
Como referenciar
LANDULFO, E.; FREITAS, S.R.; LONGO, K.M.; UEHARA, S.T.; SAWAMURA, P. A comparison study of regional atmospheric simulations with and elastic backscattering lidar and sunphotometry in an urban area. Atmospheric Chemistry and Physics, v. 9, n. 18, p. 6767-6774, 2009. DOI: 10.5194/acpd-9-9151-2009. Disponível em: http://repositorio.ipen.br/handle/123456789/4840. Acesso em: 26 Mar 2025.
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