Using analytical description of snow BRDF for visible channel calibration

Vicarious calibration using different types of land surface and deep convective clouds is considered as a mode to monitor the sensor performance. Snow cover as the brightest and in many cases spatially uniform surface has a significant potential as a calibration target. Proposed in this presentation approach is based on the creation and implementation of analytical bidirectional reflectance distribution functions (BRDF) model as distinct from the empirical and semi-empirical ones obtained in other works. An accurate analytical description of snow BRDF makes calibration possible without using in-situ observations.