Use of ERS/SAR measurements for soil geometric and aerodynamic roughness estimation in semi-arid and arid areas. - Sylvie Le Hégarat-Mascle; Mehrez Zribi; B. Marticorena; G. Bergametti; M. Kardous; Y. Callot; Patrick Chazette; Jean Louis Rajot (IGARSS, 2003)