Fig. 7: Visualization of spatial distribution of time-averaged normalized RMSE difference for humidity forecasts: EXP_ASSI compared with EXP_CORR. | npj Climate and Atmospheric Science

Fig. 7: Visualization of spatial distribution of time-averaged normalized RMSE difference for humidity forecasts: EXP_ASSI compared with EXP_CORR.

From: FuXi-DA: a generalized deep learning data assimilation framework for assimilating satellite observations

Fig. 7

The spatial distribution of time-averaged normalized RMSE difference for R300 (a), R500 (b), and R850 (c) at forecast lead times of 1 day. The spatial distribution of time-averaged normalized RMSE difference for R300 (d), R500 (e), and R850 (f) at forecast lead times of 3 day. The spatial distribution of time-averaged normalized RMSE difference for R300 (g), R500 (h), and R850 (i) at forecast lead times of 5 day. The spatial distribution of time-averaged normalized RMSE difference for R300 (j), R500 (k), and R850 (l) at forecast lead times of 7 day. The global domain is divided into 36 × 72 smaller regions, each with a 5° × 5° range, within which the regionally-averaged latitude-weighted RMSE and normalized RMSE difference are computed. The areas filled with plus signs are places in which the normalized RMSE difference passed the 95%-confidence-level t-test of significance.

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