The choice of prediction equation for the parameterization of clearness index and unavailable solar radiation in terms of relative sunshine duration, relative humidity and cloud cover have been carefully analyzed. In a previous study, these equations were applied to seven meteorological stations in Nigeria: Bauchi, Jos, Kano, Maiduguri, Nguru, Potiskum and Yola, the result shows that high correlation was obtained for most stations when unavailable solar radiation is used as the dependent variable. In this paper we have extended the study to include seven other meteorological stations in Nigeria: Bida, Enugu, Gusau, Ikom, Minna, Yelwa and Zaria. The result shows that with unavailable solar radiation as the dependent variable, high correlation ( > 0.92) is obtained for yearly fits for most of the stations, except for Zaria where = 0.7904
climatological parameters, model equations, unavailable solar radiation, cloud cover
Cite this paper
Eyube Edwin Samson, Alkasim Abubakar, Najoji Sunday David. (2018) Prediction Equations for the Parameterization of Clearness Index and Unavailable Solar Radiation in Terms of Some Climatological Parameters for Some Nigerian Stations. International Journal of Renewable Energy Sources, 3, 71-77
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