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 3

A comparison of results from the different downscaling models.

Model	RMSE; (mm)			Significance
OSR	124.6	0.109	0.61
MLR	149.46	0.152	0.44
ANN_D	218.27	0.195	0.11	-
ANN_S	157.35	0.161	0.32
GWR	141.07	0.146	0.53

Note. “-” represents insignificance; “” is significant at the level; and “” is significant at the level.