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Based on numerical simulations, coefficients are determined to be used in a linear relationship between clear-sky planetary albedo and surface albedo. Thew coefficients are given as functions of solar zenith angle and atmospheric parameters for both the AVHRR (Advanced Very High Resolution Radiometer) channels 1 and 2 separately. The atmospheric effects in these channels are systematically different, because of the different spectral behavior of atmospheric parameters. Accordingly the use of the narrowband coefficients will improve the determination of surface properties from AVHRR data, compared with analogous methods using broadband coefficients.
Peter Koepke (Fri,) studied this question.