albedo the part of the solar radiation reflected or scattered in all directions from a surface to the total solar radiation, direct or scattered, incident on that surface GRM: n. Note: albedo as a generalised concept relates to reflectance from a surface across the whole spectral range covered by solar radiation and neglects variations due to angles of incidence; the albedo of a specific surface, however, can vary markedly with the angle of incidence References: SEEsolar radiation SEEsun's radiation