Development Of An Operational Procedure To Estimate Surface Albedo From The SEVIRI/MSG Observing System In Using Polder BRDF Measurements

摘要

A statistical inversion method is presented in support to the application of kernel-based BRDF (Bi-directional Reflectance Distribution Function) models for the calculation of the surface albedo. We present an operational procedure for the inversion of kernel-driven BRDF model and further albedo retrieval to be applicable to the SEVIRI/MSG reflectance measurements. The processing steps applied to space-borne POLDER sensor data were as follows: 1) quality control, 2) accumulation of a priori information on model coefficients of directional hemispherical reflectance, 3) implementation of the BRDF model inversion methods based on the biased estimation instead of usual non-biased least solution, which has too big variance.