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

Table 6

Ratio distribution of RMSE of 48 h forecast of geopotential height on 500 hPa between corrected forecast and the forecast of model.

Correction process	0.5–0.6	0.6–0.7	0.7–0.8	0.8–0.9	0.9–1.0	>1.0
Systematic error	2	24	69	51	18	22
Nonsystematic error	9	39	82	40	11	5