Umoh, Monday D and Akpan, Udosen E
Keywords: Global solar radiation, sunshine hours, meteorological parameters, multiple linear regression.
Abstract: Multiple linear regression models were developed to estimate the monthly from daily sunshine hours using four meteorological parameters for a period of eleven years (1997 to 2007) for Uyo, Nigeria (Latitude of 5o18’53.7’’N). The parameters include Relative Humidity (RH), Maximum and Minimum Temperature (T), Rainfall (RF) and Wind Speed (W). The result of the four variable correlations gives the highest value of correlation coefficient R. This gives the best result when considering the error term, Root Mean Square Error (RMSE). The correlation is given as S = -16.876 – 2.065RF + 0.237W + 1.278T + 0.129RH The developed correlation is a veritable tool which can be used for estimating Sunshine hours for other locations with similar climatic conditions.
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