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Title: Aerosol characterization and optical thickness retrievals using GOME and METEOSAT satellite data
Authors: Costa, Maria João
Cervino, Marco
Cattani, Elsa
Torricella, Francesca
Levizzani, Vincenzo
Silva, Ana Maria
Melani, Samantha
Keywords: Aerosol properties
Satellite remote sensing
Issue Date: 2002
Publisher: Springer
Citation: Costa, M.J., Cervino, M., Cattani, E., Torricella, F., Levizzani, V., Silva, A.M., Melani, S., Aerosol characterization and optical thickness retrievals using GOME and METEOSAT satellite data. Meteorology and Atmospheric Physics.Volume 81, Numbers 3-4 (2002), 289-298, DOI: 10.1007/s00703-002-0553-y .
Abstract: Retrievals of atmospheric aerosol optical thickness are highly dependent on the choice of the class describing the aerosol properties leading to significant errors while using classes available in the literature. High spectral resolution measurements from GOME (Global Ozone Monitoring Experiment) between the ultraviolet and the near infrared can be used for an accurate characterization of the aerosol optical properties. The radiometer MVIRI (METEOSAT Visible and Infrared Imager) on board the geostationary satellite METEOSAT, while being equipped only with broadband VIS channel, ensures an adequate half-hourly monitoring of the atmospheric conditions over a large portion of the Earth. The present algorithm is based on a combination of data from both sensors for the retrieval of the aerosol optical thickness at the reference wavelength of 0.55μm (AOT). A case of a desert dust outbreak from the African continent over the Atlantic Ocean is examined. AOT values obtained using a priori fixed classes taken from the literature are compared with those retrieved with this algorithm using the GOME-derived classes. Systematic differences of the order of a few tenths on average are found which remain significant also after considering the measurement errors. This represents a novelty introduced by the synergetic use of both sensors.
Type: article
Appears in Collections:CGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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