Development Of An Operational Procedure To Estimate Surface Albedo From The SEVIRI/MSG Observing System In Using Polder BRDF Measurements
نویسنده
چکیده
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.
منابع مشابه
DEVELOPMENT OF AN OPERATIONAL PROCEDURE TO ESTIMATE SURFACE ALBEDO FROM THE SEVIRI/MSG OBSERVING SYSTEM BY USING POLDER BRDF MEASUREMENTS: I. Data quality control and accumulation of information corresponding to the IGBP land cover classes
In this paper, we present an operational procedure for the inversion of kernel-driven bi-directional reflectance distribution function (BRDF) model and further albedo retrieval to be applicable to the SEVIRI/MSG reflectance measurements. Our approach aims at bringing solutions to an ill posed problem that is when the ratio of extreme eigenvalues of the inverse matrix is of several orders of mag...
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