Relative and multitemporal calibration of AVHRR, SeaWiFS, and VEGETATION using POLDER characterization of desert sites

This paper presents the last results of a continuing study aiming at a better characterization of desertic sites for satellite borne optical sensors calibration. The study relies on the gathering of long term archive of satellite data and coincident atmospheric variables, and use of physical properties of the surface as extracted from POLDER measurements, over a set of carefully selected desertic sites in North Africa and Saudi Arabia. All these data sets are included in a repository specifically designed which is also presented. Results are included for AVHRR/NOAA14, SeaWiFS and VEGETATION from 1996 up to present and extension to MODIS and MISR are presented.