Solar GHI Ensemble Prediction Based on a Meteorological Model and Method Kalman Filter

Table 2

Statistical indexes for solar GHI different forecasts.

Forecasting method and member	Bias [W/m^2]; (Relative bias)	RMSE [W/m^2]; (Relative RMSE)	CORR [−]
	49.7; (28.8%)	102.9; (59.6%)	0.950
	−2.4; (−1.4%)	79.1; (45.8%)	0.951
	51.4; (29.7%)	118.9; (68.9%)	0.929
	−6.0; (-3.5%)	94.6; (54.7%)	0.930
	50.8; (29.4%)	129.8; (75.2%)	0.911
	−8.5; (−4.9%)	106.6; (61.7)	0.911
Ensemble mean	50.6; (29.3%)	104.9; (60.7%)	0.946
Ensemble mean	−5.6; (−3.2%)	81.8; (47.4%)	0.947
Persistent	0.3; (0.15%)	191.7; (110.9%)	0.718