摘要：Energy forecast and engineering designs within the atmosphere requires essential some measurable parameters which can be related to solar radiations. Global solar radiation accounts for the influx of solar radiation received at the ground level. This study presents twelve empirical models with respect to sunshine duration, relative humidity, and temperature using 25 years of observatory data obtained from some stations. The annual and seasonal performance of the models were validated using statistical measure i.e. Mean Bias Error (MBE), Root Mean Square Error (RMSE), Mean Percentage Error (MPE) and Pearsons correlation coefficient. The proposed models show the lowest MBE, RMSE, and MPE for the temperature based models in Sokoto and Ilorin while all models performed favorably for Port -Harcourt. Similar trends were observed in both wet and dry seasons with improvement in the estimated of global solar radiation. The study recommends some of the models for future prediction of Solar Radiation.
关键词：Global Solar Radiation;Empirical Models;Seasonal;Sunshine Duration;Temperature.
