The Meteorological Institute of Portugal, in charge of the Land Surface Analysis (LSA) SAF, has identified Postel as a contact point of the AMMA community. In this framework :
  IM provides Medias-France, which hosts the Postel Service Center, the surface albedo derived from the SEVIRI / METEOSAT Second Generation (MSG) data.
  Postel collects, synthetize and transmits to IM the feedback of the users from the AMMA community.

The transfer of the SAF LSA products from IM to Medias-France is operational since July 2005. The hemispherical albedo integrated over the whole solar spectrum, available since September 2005, is re-sampled on a regular grid at 0.05° resolution, and the West African zone (25°W to 25°E, 5°S to 20°N) is extracted (image below). These files are transmitted to the AMMASAT database where they are accessible to the AMMA community.

Broadband Bi-hemispheric Albedo over West Africa, June 8, 2006.

Furthermore, in the frame of AMMA (African Monsoon Multi-disciplinary Analysis) project, Postel customise existing surface albedo products in order to standardize them in terms of projection, spatial resolution, and area coverage, and to make them easier to use by modellers community. Consequently, customisation consists in resampling products on pre-defined grids, and extracting areas of interest, which are :
  West Africa : from 25°W to 25°E, from 5°S to 20°N
  Atlantic : from 60°W to 40°E, from 35°S to 35°N

Postel has generated customized Surface Albedo products from the 10-day POLDER-1 (1996-1997) and POLDER-2 (2003) broadband hemispheric albedo, resampled on a regular grid at 0.05° resolution over "West Africa" area. They can be downloaded with their readme files.