Albedo distribution of solar radiation reaching the Earth's surface. These factors vary with atmospheric composition, geographic location and time (see position of the Sun). While bi-hemispherical reflectance is calculated for a single angle of incidence (i.e., for a given position of the Sun), albedo is the directional integration of reflectance over all solar angles in a given period. The temporal resolution may range from seconds (as obtained from flux measurements) to daily, monthly, or annual averages. Unless given for a specific wavelength (spectral albedo), albedo refers to the entire spectrum of solar radiation. Due to measurement constraints, it is often given
Albedo 0.39 Albedo 0.39 Albedo 0.39 is a studio album by the Greek electronic composer Vangelis, released in 1976. It was the second album produced by Vangelis in Nemo Studios, London, which was his creative base until the late 1980s. It contrasts with his previous album, "Heaven and Hell", which was classically inspired and choral, while "Albedo 0.39" has blues and jazz overtones. It was his first Top 20 UK album. It is a concept album themed around space physics (the reflection of light i.e. physical truth). Its title is inspired by the idea of a planet's albedo, the proportion of the