Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
NASA. 2007. NASA Surface meteorology and Solar Energy: Global Data, release 5.1 - Insolation on horizontal surface (1983-1993). http://eosweb.larc.nasa.gov/cgi-bin/sse/sse.cgi?+s01 (Accessed July 14th 2007)
Uploaded on Saturday 25 Feb 2012
Hugo Ahlenius, UNEP/GRID-Arendal
Solar insolation, the quantification of energy per surface area on the ground, can be used as an indicator for the potential for solar energy. This graphic presents solar insolation, calculated to annual averages from monthly averages 1983 - 1993.