1. Release 3 SSE data can be obtained from 〈http://eosweb.larc.nasa.gov/sse〉.
2. ISCCP data can be obtained through 〈http://isccp.giss.nasa.gov〉 and/or 〈http://eosweb.larc.nasa.gov〉.
3. GEOS data can be obtained from 〈http://dao.gsfc.nasa.gov〉.
4. RETScreen™ data can be obtained from 〈http://retscreen.gc.ca〉.
5. Darnell, W. L., Staylor, W. F., Ritchey, N. A., Gupta, S. K., and Wilber, A. C., 1996, “Surface Radiation Budget: A Long-Term Global Dataset of Shortwave and Longwave Fluxes,” American Geophysical Union, 〈http://www.agu.org/eos_elec/95206e.html〉.