\(CRPS\ =\frac{1}{50\ N_{\text{lat}}N_{\text{lon}}}\text{\ \ }\sum_{y=2051}^{2100}{}\sum_{i}^{N_{\text{lat}}}{}\sum_{j}^{N_{\text{lon}}}{}L\left(i\right)\int_{x=-\infty}^{x=\infty}{}\left(F_{i,j,y}\left(x\right)-F_{i,j,y}^{t}\left(x\right)\right)^{2}dx,\) (2)