Medugu D. W. and Yakubu D.
In this study, the estimation of global solar radiation at Yola, Nigeria latitude 9012’N was carried out. The daily sunshine hour were measured for four years (2004 to 2007) using sunshine recorder. The monthly mean values were determined. The Angstrom model was then used to estimate the global solar radiation based on the available climatic parameters of sunshine hour. From the results obtained, the values of the radiation varies from the range of 13.75 MJm-2day-1 to 25.16 MJm-2day-1 with the mean value of 21.54±0.46 MJm-2day-1 in order to be utilized very efficiently in the design and prediction of the performance of solar energy devices. This method was employed since installation of pyranometer is a very costly exercise.
