Land-surface albedo refers to the ratio of reflected to incoming solar radiation at the Earth’s surface over the solar spectral domain. As one of the fundamental forcing parameters in climate models, surface albedo plays an important role in the Earth’s radiant energy budget. Spatio-temporal variability in albedo is often associated with environmental change and human activities as well. Global change researches demand spatially intact and long time continuous global albedo product. But remote sensing retrieval results from single sensor are limited by sensor characteristics, acquisition condition as well as cloud coverage. The preferred solution is to combine data from multiple sensors/satellite and derive one complete and consistent dataset.

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