Abstract
This study utilized monthly daily values of solar radiation, humidity, ultraviolet dose, temperature, pressure and wind speed obtained at Department of Physics, Covenant University, Ota, Nigeria, for 2013. It was observed that correlation coefficients vary from 0.134 - 0.955 across the months. This was further demonstrated with values of coefficient of determination R2 which vary from 0.018-0.911 for Ota stations. Based on the RMSE, MPE, MBE and p values, we obtained an Equation that produces the best correlation. Our result reveals the models that produce the smallest p values which are considered as the best model for estimating the solar radiation at Ota site with an acceptable error. Also, Wavelet spectrum based approach was employed to analyse the meteorological monthly series in a sequence of monthly scales of January to December 2013.
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