Albedo planet would drop to about 0 °C. In contrast, if the entire Earth was covered by water — a so-called aquaplanet — the average temperature on the planet would rise to almost 27 °C. For land surfaces, it has been shown that the albedo at a particular solar zenith angle "θ" can be approximated by the proportionate sum of two terms: the directional-hemispherical reflectance at that solar zenith angle, formula_1, and the bi-hemispherical reflectance, formula_2, with formula_3 being the proportion of direct radiation from a given solar angle, and formula_4 being the proportion of diffuse illumination. Hence, the actual albedo
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