Annual and monthly mean global, direct and diffuse solar irradiation in Botucatu/SP/Brazil

This work presents a climatic and statistical analysis of global, direct horizontal and diffuse radiations using a database of solar radiation based on 5-minute averaged values continuously measured, from 1996 to 2006, in a radiometric station located in the rural area of Botucatu City, Southeast of Brazil, at 22.85ºS and 48.45ºW and 786 meters above the mean sea level. Annual and monthly averages were obtained using variation intervals of hourly and daily irradiations. The monthly average transmissivity of the global, direct horizontal and diffuse radiations are also described in this work