Abstract
Rugged terrain significantly complicates the land surface albedo modeling and retrievals in remote sensing. Neglecting the topographic effects may lead to large uncertainties when estimating land surface albedo over rugged terrain. In this study’ the sensitivities of snow-free vegetation shortwave albedo to topography are quantitatively investigated and analyzed based on the Moderate Resolution Imaging Spectroradiometer (MODIS) land surface albedo data and the global sensitivity analysis of a mechanistically-based land surface albedo parameterized model over rugged terrain. The results reveal that the topography can account for more than 30% of the total variabilities of the land surface albedo and the topographic effects on land surface albedo cannot be neglected even for the terrain with the mean slope of 10°.
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