Numerical Studies on Forecast Error Correction of GRAPES Model with Variational Approach

Table 7

Average of RMSE of test samples of temperature on 500 hPa (unit: K).

Test month	GRAPES model	Systematic error correction	Nonsystematic error correction
2008 Jan.	0.948	0.769	0.741
2009 Jan.	0.979	0.748	0.722
2010 Jan.	0.888	0.724	0.708
2008 Jul.	0.966	0.743	0.723
2009 Jul.	0.983	0.783	0.759
2010 Jul.	0.962	0.791	0.766