Harmon, Mark E.; Marks, Barbara. 1995. Programs to Estimate the Solar Radiation for Ecosystem Models. Corvallis, OR: Oregon State University; Internal, 15 p.
This manuscript documents the calculations used in two programs that we have developed to estimate the solar radiation input to a site based on its latitude, elevation, aspect, slope, and cloud cover. The effects of topographic shading are not included in this version of these programs. The first program, SolarRad, is used for a single location. The second program, SolarImg, is used for a multiple locations in a grid. Both programs are coded in C and can be used either in a DOS or a UNIX environment.