Table 9 Temperature- and extraterrestrial radiation-based models and their coefficients and error estimation
From: Global solar radiation estimation from commonly available meteorological data for Bangladesh
Model no. | Equations | a | b | c | \(R^2\) | MPE | MBE | RMSE | MARE | t stat |
|---|---|---|---|---|---|---|---|---|---|---|
40 | \(H/H_0 = a[1-\hbox {exp}(-b(\Delta T^{\mathrm{c}}/H_0))]\) | 0.5268 | 0.6639 | 1.688 | 0.8204 | 0.223397 | 0.017537 | 0.23263 | 0.053098 | 0.250746 |
41 | \(H/H_0 = a(\sqrt{\Delta T})(1+bH_0+c(H_0)^2)\) | −0.006515 | −5.961 | 0.3323 | 0.93 | 0.49945 | −0.00891 | 0.152122 | 0.033675 | 0.194633 |
42 | \(H/H_0 = a + b\Delta T + cH_0\) | 0.1534 | 0.03344 | 0.002771 | 0.8975 | 0.191296 | 6.24E−05 | 0.171798 | 0.039023 | 0.001204 |