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Surface bidirectional reflectance distribution function observed at global scale by POLDER/ADEOS
Author(s) -
Hautecœur Olivier,
Leroy Marc M.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1998gl900111
Subject(s) - bidirectional reflectance distribution function , remote sensing , biome , azimuth , environmental science , taiga , specular reflection , range (aeronautics) , geology , reflectivity , geography , optics , ecosystem , ecology , physics , materials science , forestry , composite material , biology
The spaceborne POLDER instrument presents the unique capability of sampling the surface Bidirectional Reflectance Distribution Function (BRDF) up to about 60° viewing angle for the full azimuth range of every point on Earth at 6 km resolution, when atmospheric conditions are favorable. This paper presents examples of BRDF signatures acquired at this resolution on several terrestrial biomes (desert, steppe, grassland, boreal forest, savanna, wetland). Well identified directional signatures for all azimuths are obtained and shown to be different for each biome. Specific directional effects in the hot spot and specular directions are well observed in the data.