Total shortwave apparent albedos under both clear and cloudy conditions are also significantly different from their inherent total shortwave albedos. The results show that spectral inherent albedos are different from spectral apparent albedos in many cases. In this paper the authors separate the apparent surface albedo from the inherent surface albedo, which is independent of atmospheric conditions, based on extensive radiative transfer simulations under a variety of atmospheric conditions. Surface albedo retrieved from satellite observations at one atmospheric condition may not be suitable for application to other atmospheric conditions. Land surface albedo is a critical parameter affecting the earth’s climate and is required by global and regional climatic modeling and surface energy balance monitoring. Surface visible apparent albedo and inherent albedo for cloudy conditions.ĭirect and diffuse apparent albedos and inherent albedos in both shortwave and visible broad bands. Surface shortwave apparent albedos and inherent albedos for cloudy conditions. Prediction of surface visible inherent albedos from MODIS narrowband TOA albedos using the polynomial regression and a neural network. Prediction of surface shortwave inherent albedos from MODIS narrowband TOA albedos using polynomial regression and a neural network. Surface broadband inherent albedos and apparent albedos under different clear-sky conditions: (a) shortwave (b) visible. Surface reflectance spectra used in the MODTRAN simulations.Ĭomparison of surface spectral inherent albedos with apparent albedos under different clear-sky conditions.
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