From: Global solar radiation estimation from commonly available meteorological data for Bangladesh
Model no. | Equations | a | b | c | d | \(R^2\) | MPE | MBE | RMSE | MARE | t stat |
---|---|---|---|---|---|---|---|---|---|---|---|
30 | \(H/H_0 = a[1-\hbox {exp}(-b(\Delta T)^{\mathrm{c}})]\) | 6.842 | 0.02002 | 0.59 | – | 0.8637 | 0.317626 | −0.00023 | 0.171864 | 0.038084 | 0.004467 |
31 | \(H/H_0 = a \times \hbox {exp}(b \Delta T)\) | 0.2525 | 0.07019 | – | – | 0.8961 | 0.197066 | 0.006198 | 0.167799 | 0.036362 | 0.122597 |
32 | \(H/H_0 = a[1-\hbox {exp}(-b(\Delta T)^a)]\) | 0.8347 | 0.1412 | – | - | 0.8811 | 1.477691 | −0.04888 | 0.185846 | 0.037303 | 0.904051 |
33 | \(H/H_0 = a \times \hbox {exp}(b \Delta T) + c \times exp(d \Delta T)\) | 0.2531 | 0.06996 | −1.907 | −1.381 | 0.8961 | 0.192121 | 0.006394 | 0.167813 | 0.036402 | 0.12647 |
34 | \(H/H_0 = a(\Delta T^{0.5})\) | 0.1596 | – | – | – | 0.8784 | 0.131653 | 0.008627 | 0.193591 | 0.038634 | 0.147948 |
35 | \(H/H_0 = a(\Delta T^{0.5})+b\) | 0.1761 | −0.04091 | – | – | 0.8845 | 1.44731 | −0.0472 | 0.181962 | 0.036747 | 0.89087 |
36 | \(H/H_0 = a\Delta T^{\mathrm{b}}\) | 0.1381 | 0.569 | – | – | 0.8919 | 0.196359 | 0.00489 | 0.171956 | 0.038205 | 0.094353 |
37 | \(H/H_0 = a\Delta T^{\mathrm{b}}+c\) | 0.004524 | 1.679 | 0.2933 | – | 0.8959 | 0.197305 | 0.00627 | 0.167929 | 0.036417 | 0.123925 |
38 | \(H/H_0 = a\Delta T^2 + b\Delta T + c\) | 0.001263 | 0.01089 | 0.2741 | – | 0.896 | 0.194758 | 0.00637 | 0.167952 | 0.036419 | 0.12589 |
39 | \(H/H_0 = a\Delta T^3 + b\Delta T^2 + c\Delta T + d\) | 0.0009056 | −0.02235 | 0.2108 | −0.2714 | 0.8984 | 0.263633 | 0.003942 | 0.169964 | 0.036145 | 0.076945 |