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IOMASA Résumé de rapport

Project ID: EVK3-CT-2002-00067
Financé au titre de: FP5-EESD
Pays: Germany

Retrieval algorithm for surface emissivity at AMSU-A window channel frequencies from AMSU-A data

This algorithm retrieves the surface emissivity at window channels of the Advanced Microwave Sounding Unit (AMSU) radiometers in polar regions. The instruments are on the new generation satellites of National Oceanic and Atmospheric administration (NOAA-15, 16, 17).

The method assumes hypothetical surfaces with emissivities 0 and 1 and simulates brightness temperatures at the top of the atmosphere using atmospheric profiles, e.g., from the European Centre for Medium Range Weather Forecasts (ECMWF), as input for a radiative transfer model. Surface emissivity can then be calculated from simulated brightness temperatures and satellite-measured brightness temperatures.

Informations connexes


Georg HEYGSTER, (Group leader)
Tél.: +49-4212183910
Fax: +49-4212184555