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Previously, a few bidirectional reflectance distribution function (BRDF) archetypes were distilled from the routine MODIS BRDF product for capturing the major variability of anisotropic reflectance of a large number of land surfaces from MODIS, based on the RossThick-LiSparseReciprocal (RTLSR) model. Since the routine RTLSR BRDF model tends to underestimate the hotspot effect, the resulting hotspot...
The RossThick-LiSparse-Reciprocal (RTLSR) Bidirectional Reflectance Distribution Function (BRDF) model has been developped to derive the operational Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo product due to its simplicity and the underlying physics; however, early research showed that this model deficiency mainly comes from its underestimation of the hotspot directional signatures...
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