EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > INCOMING SOLAR RADIATION
In general, solar radiation received at the earth's surface. The amount of direct solar radiation incident upon a unit horizontal surface at a specific level on or above the surface of the earth. Incoming solar radiation is solar radiation that has not been scattered or absorbed.
Adapted from the American Meteorological Society Glossary of Meteorology. http://amsglossary.allenpress.com/glossary/