Fig. 4: Spatial distribution of daily precipitation evaluation indicators for GSMaP_MVK, GSMaP_Gauge, and GSPIC-RT. | Communications Earth & Environment

Fig. 4: Spatial distribution of daily precipitation evaluation indicators for GSMaP_MVK, GSMaP_Gauge, and GSPIC-RT.

From: Regional-scale intelligent optimization and topography impact in restoring global precipitation data gaps

Fig. 4

a–c CC distribution. GSPIC-RT shows high CCs (>0.5) across most regions, with localized low CCs (<0.3) in southwestern Xinjiang. d–f RMSE distribution. GSPIC-RT exhibits lower RMSEs (<5 mm/d) over the Tibetan Plateau, showing a northwest-low to southeast-high pattern. g–i BIAS distribution. GSPIC-RT corrects GSMaP’s underestimation in the west and overestimation in the east, improving agreement with gauges.

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