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Proceedings Paper

A preliminary classification of cirrus clouds over Sao Paulo city by systematic lidar observations and comparison with CALIPSO and AERONET data
Author(s): Eduardo Landulfo; Eliane G. Larroza; Fábio J. S. Lopes; Christophe Hoareau
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Paper Abstract

Cirrus clouds in the upper troposphere and the lower stratosphere have recently drawn much attention due to their important role and impact on the atmospheric radiative balance. To understand and quantify its impact on earth's atmosphere radiative transfer it is necessary to have information about its optical properties. Such a knowledge is necessary both for comparison with others datasets of cirrus measurements as well as for its influence on radiative transfer models. Cirrus clouds measurements have been performed since 2005 in the Metropolitan Sao Paulo, Brazil (23°33'S, 46o44'W). From MSP-lidar backscatter profiles at 532 nm, and eventually 355 nm, the cloud optical depth (COD) as well as the high of base and top of the clouds are retrieved. A preliminary climatology of cirrus clouds over Sao Paulo using this method has been set. The measurements from Aerosol Robotic Network (AERONET), the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and GOES-10 observations are compared with a ground based lidar dataset for a wide range of cloud types.

Paper Details

Date Published: 29 September 2009
PDF: 9 pages
Proc. SPIE 7475, Remote Sensing of Clouds and the Atmosphere XIV, 747506 (29 September 2009); doi: 10.1117/12.829923
Show Author Affiliations
Eduardo Landulfo, Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Eliane G. Larroza, Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Univ. Versailles (France)
Fábio J. S. Lopes, Instituto de Pesquisas Energéticas e Nucleares (Brazil)
Christophe Hoareau, Univ. Versailles (France)


Published in SPIE Proceedings Vol. 7475:
Remote Sensing of Clouds and the Atmosphere XIV
Richard H. Picard; Klaus Schäfer; Adolfo Comeron; Evgueni I. Kassianov; Christopher J. Mertens, Editor(s)

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