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Albedo definition, Astronomy. the ratio of the light reflected by a planet or satellite to that received by it. See more.
When seen from a distance, the ocean surface has a low albedo, as do most forests, while desert areas have some of the highest albedos among landforms. Most land areas are in an albedo range of 0.1 to 0.4. The average albedo of the Earth is about 0.3. This is far higher than for the ocean primarily because of the contribution of clouds. Human activities have changed the albedo (via forest clearance and farming, for example) of various areas around the globe.