Abstract

The estimation of the solar radiation at Uturu latitude 05.33^oN and 06.03^oN was carried out in this work. The temperature data were obtained from 5th – 31st October, 2007) using the maximum and minimum thermometer placed in the Stevenson screen at 1.5 m The Hargreaves equation was used to estimate the solar radiation at Uturu. The mean global solar radiation obtained for the period is 1.89 ± 0.82 kwh per day. A comparison of the mean solar radiation result obtained at Uturu and that obtained by Chineke (2007) at Umudike (5^o29’N, 7^o33’E) in October, 1997 and Chineke (2002) at Owerri (5^o28’N, 7^o2’E) in October, 1997 showed that the solar radiation obtained at Uturu is low. This difference may be attributed to the fact that Uturu is bounded on the West and South by a hilly escarpment.

Key words: Global solar radiation, Hargreaves equation.