Survey of the incident solar radiation in Brazil by use of meteosat satellite data

✍ Scribed by Enio B. Pereira; Samuel L. Abreu; Rolf Stuhlmann; Martin Rieland; Sergio Colle

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 881 KB
• Volume: 57
• Category: Article
• ISSN: 0038-092X
• DOI: 10.1016/s0038-092x(96)00059-x

✦ Synopsis

Meteosat-2 satellite data in the visible band were used to calculate monthly averages from daily mean incident solar radiation over Brazil, using the IGMK physical model for the period 1985-1986. Satellite estimates are compared with ground data from 22 national stations. The global root mean square error between model and ground results for all data points was 13%, and the mean bias error was 1.23 MJ m-'. About 68% of the individual errors were below 10% and clustered around 8%. Global radiation estimated by the model ranged from 9.0 to 27 MJ mm2 with the diffuse to global ratio falling into the 0.2-0.5 interval. Enhanced inverted zonal trends were found for both satellite predictions and the ground station results.