Research Article
Prediction of Global Solar Radiation in Abu Dhabi
Table 3
Goodness of fit statistics for the used regression models.
| Station | Model | R2 | MAPE | MBE | MABE | RMSE | SSR | SST |
| Abu Dhabi | Linear | 94% | 1.89 | −0.0035 | 0.1080 | 0.1330 | 17.751 | 18.862 | Quadratic | 90% | 1.94 | 0.0094 | 0.1162 | 0.1529 | 16.979 | 18.863 | Cubic | 91% | 1.75 | 0.0006 | 0.1038 | 0.1324 | 17.209 | 18.861 | Exponential | 88% | 2.23 | 0.0370 | 0.1338 | 0.1742 | 16.628 | 18.878 | Logarithmic | 88% | 2.39 | 0.0148 | 0.1410 | 0.1777 | 16.687 | 18.864 | Linear-logarithmic | 87% | 3.11 | 0.0151 | 0.1799 | 0.2141 | 16.449 | 18.864 | Power | 88% | 2.52 | 0.0077 | 0.1474 | 0.1825 | 16.682 | 18.862 |
| Al Ain | Linear | 81% | 3.39 | −0.1341 | 0.1751 | 0.2173 | 16.328 | 20.766 | Quadratic | 83% | 3.15 | −0.0068 | 0.1935 | 0.2134 | 16.610 | 19.919 | Cubic | 83% | 3.06 | 0.0016 | 0.1881 | 0.2078 | 16.497 | 19.918 | Exponential | 81% | 3.32 | 0.0053 | 0.2142 | 0.2592 | 16.166 | 19.919 | Logarithmic | 84% | 3.45 | 0.1040 | 0.2131 | 0.2332 | 16.794 | 20.048 | Linear-logarithmic | 83% | 3.07 | −0.0059 | 0.1896 | 0.2104 | 16.505 | 19.918 | Power | 74% | 4.10 | 0.2658 | 0.2781 | 0.3685 | 15.351 | 20.766 |
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