We are working to investigate a Quality Assessment (QA) band for the Surface Reflectance product for excluding inaccurate surface reflectance pixels. In addition, Surface Reflectance version 2 will include additional MODIS-derived inputs for water vapor and ozone as well as improved methods for detecting clouds and cloud shadows at the pixel level. Bidirectional reflectance distribution function (BRDF) effects when mosaicking data over large areas and through time and the adjacency effect of neighboring pixels on the bidirectional reflectance function of target pixels also needs further research and understanding.
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