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

Figure 9

RMSE of 500 hPa temperature of 24 h forecast at January (a, b, and c) and July (d, e, and f) of 2008, 2009, and 2010, regarding the observational upper air temperature from MICAPS as the truth. The black lines (GRAPES) denote GRAPES model forecast, red lines (SEC) to the forecast after system correction, and blue lines (NSEC) to the forecast after correction of nonsystematic error.

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