" albedo "

Albedo.

The albedo of the Earth is 0.367.

When Vangelis released his album, Albedo 0.39, that was what the albedo of Earth was in 1976.

The average overall albedo of Earth, itsplanetary albedo, is 30 to 35%, because of the covering by clouds, but varies widely locally across the surface, depending on the geological and environmental features.

Albedo means reflectivity. The higher the albedo, the more light (and heat) is being reflected.

Generally, the darker the color, the lower the albedo : most of the energy is absorbed. Snow has a fairly high albedo, as do clouds. Black tar roofs have a very low albedo.