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Proceedings Paper

Estimation of TOA radiative fluxes from the GERB instrument data
Author(s): Nicolas Clerbaux; Cedric Bertrand; Steven Dewitte; Luis Gonzalez; Alessandro Ipe; Bogdan Nicula
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Paper Abstract

The first Meteosat Second Generation (MSG) satellite was launched in August 2002. This EUMETSAT satellite carries 2 new instruments on the geostationary orbit: the Spinning Enhanced Visible and InfraRed Imager, SEVIRI, and the Geostationary Earth Radiation Budget, GERB. The unique feature of GERB in comparison with previous measurement missions of the Earth's radiation budget (e.g. ERBE, ScaRab and CERES experiments) is the high temporal sampling afforded by the geostationary orbit, albeit for a limited region of the globe. The GERB instrument provides accurate broadband measurements of the radiant energy originating in the reflection of the incoming solar energy by the Earth-atmosphere system and in the thermal emission within this system. The synergetic use of the SEVIRI data is needed to convert these directional measurements (radiances) into radiative fluxes at the top-of-atmosphere. Additionally, the SEVIRI data allows the enhancement of the spatial resolution of the GERB measurement. This paper describes the near real-time GERB processing system that has been set up at the Royal Meteorological Institute of Belgium (RMIB). This includes the unfiltering of the instrument data, the radiance-to-flux conversions and the enhancement of the instrument spatial resolution. An early validation of the instrument data by comparison with CERES data is presented. Finally, the different data formats, the way to access them and their expected accuracy are presented.

Paper Details

Date Published: 10 November 2003
PDF: 11 pages
Proc. SPIE 5152, Infrared Spaceborne Remote Sensing XI, (10 November 2003); doi: 10.1117/12.503820
Show Author Affiliations
Nicolas Clerbaux, Royal Meteorological Institute of Belgium (Belgium)
Cedric Bertrand, Royal Meteorological Institute of Belgium (Belgium)
Steven Dewitte, Royal Meteorological Institute of Belgium (Belgium)
Luis Gonzalez, Royal Meteorological Institute of Belgium (Belgium)
Alessandro Ipe, Royal Meteorological Institute of Belgium (Belgium)
Bogdan Nicula, Royal Meteorological Institute of Belgium (Belgium)

Published in SPIE Proceedings Vol. 5152:
Infrared Spaceborne Remote Sensing XI
Marija Strojnik, Editor(s)

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