Impact of MODIS BRDF and Albedo on Land Surface Models
نویسندگان
چکیده
Land surface albedo describes the fraction of incoming solar energy reflected at a given point and time, and hence determines the surface temperature and evapotranspiration. It is strongly dependent on the solar zenith angle and the three-dimensional structure of vegetation canopy (e.g., Yang et al. 2001; Schaaf et al. 2002). The land surface albedo in regional and global models can be specified using empirical observations or computed based on a radiation submodel for canopy plus underlying soil. These approaches do not consider the three-dimensional structure of vegetation.
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