combined quantity of direct, diffuse sky, and diffuse reflected solar radiation received on a plane surface from a solid angle of 360°, integrated over all wavelengths (a.k.a. total incident radiation) [W/m2], globale Sonnenstrahlung
total solar radiation coming from the sun and all of the sky. It includes the direct beam from the unclouded sun and diffuse radiation arriving indirectly as scattered or reflected sunlight from the sky and clouds.
Total solar radiant energy impinging on a surface, equal to the sum of direct and diffuse radiation. See also: Diffuse radiation, Direct radiation
The sum of irradiance on a horizontal surface caused by direct solar radiation and diffuse short-wave radiation due to clouds, dust and molecular scattering from all parts of the sky. (Definition from Van Wijk & Scholte Ubing, 1966).
the total direct solar radiation and diffuse sky radiation (e.g., that reflected or scattered) received by surface of the earth
total solar radiation; the sum of direct, diffuse, and ground-reflected radiation; however, because ground reflected radiation is usually insignificant compared to direct and diffuse, for all practical purposes global radiation is said to be the sum of direct and diffuse radiation only.
The total of direct solar radiation and diffuse sky radiation received by a unit horizontal surface. Global radiation is measured by pyranometers.
Global (short wave) radiation includes both that radiation energy reaching the ground directly from the sun, and that received indirectly from the sky, scattered downwards by clouds, dust particles etc.
