Spatial Downscaling of TRMM Precipitation Data Using an Optimal Subset Regression Model with NDVI and Terrain Factors in the Yarlung Zangbo River Basin, China

Table 4

Statistical results for comparisons of TRMM 3B43 and IMERG with observed precipitation before and after downscaling for 2014.

	Before downscaling		After downscaling
	TRMM 3B43	IMERG	TRMM 3B43	IMERG
	0.508	0.223	0.157	0.170
RMSE (mm)	283.94	171.58	119.89	126.03
	0.54	0.31	0.63	0.60