Study of aerosol optical properties on South America using AERONET data analysis
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2021
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WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 11th
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In the last decade, a new generation of satellite missions have been developed using advanced
lidar systems capable to retrieve several cloud and aerosol optical properties and distinguish different aerosol
types by applying a polarization sensitive high spectral resolution lidar (HSRL) technique, as is the case of the
Earth Clouds, Aerosols and Radiation Explorer (EarthCARE) mission, developed by the European Space
Agency (ESA) together with the Japan Aerospace Exploration Agency (JAXA). The EarthCARE payload will
be compound by four main instruments, a cloud profiling radar, with Doppler capability, the HSRL system, a
multispectral imager and a broadband radiometer, enabling the retrieval of global profiles of clouds, aerosols,
precipitation and radiation field properties. The Atmospheric Lidar system (ATLID) on board of EarthCARE
will operate at 355 nm and will use the cross and co-polarized components of Mie and Rayleigh scattering to
derive aerosol properties. An important task to be developed by ground-based research groups is the data
validation process. In this context, the Latin American LIdar NETwork (LALINET) has been playing a key role
in the cloud and aerosol studies by using lidar and/or the AERONET sunphotometers data. In order to prepare
the most suitable strategy for calibration and validation (CAL/VAL) processes of the EarthCARE mission, we
have employed an extensive study of aerosol optical properties derived from 21 AERONET sunphotometer
stations all over South America, from a period of at least 20 year. The aim of this work is to present preliminary
results of columnar aerosol optical properties, such as AOD, lidar ratio, scattering and absorption Angstrom
Exponent, single-scaterring albedo and aerosol fine-mode fraction, in order to select cluster-zones by aerosol
types to guide the validation methodology for ATLID system products, since the continent is dominated by high
spatial and temporal variability of aerosol systems.
Como referenciar
JESUS, ESTER O. de; ROSARIO, NILTON M.E. do; YOSHIDA, ALEXANDRE C.; CACHEFFO, ALEXANDRE; GUERRERO-RASCADO, JUAN L.; LANDULFO, EDUARDO; LOPES, FABIO J.S. Study of aerosol optical properties on South America using AERONET data analysis: preparation for EARTHCare ESA Satellite mission. In: WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 11th, October 19-22, 2021, Punta Arenas, Chile. Abstract... Punta Arenas, Chile: Universidad de Magallanes, 2021. p. 21-21. Disponível em: http://repositorio.ipen.br/handle/123456789/33305. Acesso em: 18 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.