Global Solar Radiation Prediction Using Sunshine Duration in Abu Dhabi - UAE

摘要

Mathematical correlations have been used to predict the monthly average global solar radiation on horizontal using the sun hours as an input parameter. The study was carried out on two weather stations in the UAE, which are Abu Dhabi and Al Ain. The used correlations included the linear Angstrom-Prescott model and its derivations, namely, the second and third order correlations. Moreover, the single term exponential model, logarithmic model, linear logarithmic model and power model were all examined in this work. The performance of the aforementioned correlations as solar radiation estimators was evaluated by comparing the predicted values with the measured values, using statistical error tests. Except for the Coppolino model in Al Ain, all other regression models performed well as solar radiation estimators in both cities of Abu Dhabi and Al Ain. The Angstrom- Prescott model and the Newland model provided the best fits for Abu Dhabi and Al Ain, respectively.