Optical satellite albedo observations of forests suffer from understory contamination, but C-band microwave reacts mostly with the canopy. This paper studies whether or not adding ASAR backscattering information could enhance optical albedo retrieval accuracy. We compare SPOT-4-retrieved reflectances combined with ASAR backscattering ratios with solely optically retrieved SPOT-4 NIR albedo, and...

Linear mixtures of materials in a scene often occur because the pixel size of a sensor is relatively large and consequently they contain patches of different materials within them. This type of mixing can be thought of as areal mixing and modeled by a linear mixture model with certain constraints on the abundances. The solution to these models has received a lot of attention. However, there are...

Climatological planetary albedo obtained from the International Satellite Cloud Climatology Project (ISCCP) D-series flux dataset is broken down into contributions from the surface and atmosphere in cryosphere regions. The atmosphere accounts for much more of climatological planetary albedo ( 75%) than the surface at all times of the year. The insignificance of the surface contribution over hig...