Hydrological Evaluation of Satellite Soil Moisture Data in Two Basins of Different Climate and Vegetation Density Conditions

Table 2

Performance statistics of individual algorithm under each approach, as well as the performance of the combined algorithm under each approach. DVP stands for denser vegetation period and TVP means thinner vegetation period.

Basins	Approaches	Soil moisture products	Validation (individual algorithm)		Validation (combined algorithm)
			NSE	RMSE (m)	NSE	RMSE (m)
PB (middle of US)	Whole year	SMOS (all)	—	—	0.53	0.0084
		AMSR-E (all)	—	—	0.16	0.010
	Temperature-based	SMOS (frozen)	−3.11	0.034	0.25	0.014
		SMOS (nonfrozen)	0.67	0.0068
		AMSR-E (frozen)	−2.40	0.030	0.057	0.013
		AMSR-E (nonfrozen)	0.14	0.0075
	NDVI based	SMOS (DVP)	0.66	0.0083	0.74	0.0059
		SMOS (TVP)	0.70	0.0051
		AMSR-E (DVP)	0.72	0.0086	0.58	0.0066
		AMSR-E (TVP)	0.42	0.0061
FBB (east of US)	Whole year	SMOS (all)	—	—	0.023	0.012
		AMSR-E (all)	—	—	−0.0013	0.010
	Temperature-based	SMOS (frozen)	−0.00066	0.032	−2.04	0.013
		SMOS (nonfrozen)	−0.12	0.0081
		AMSR-E (frozen)	−0.00057	0.030	−1.71	0.012
		AMSR-E (nonfrozen)	−0.070	0.0079
	NDVI based	SMOS (DVP)	0.12	0.012	0.16	0.011
		SMOS (TVP)	−0.059	0.019
		AMSR-E (DVP)	−0.073	0.015	0.084	0.012
		AMSR-E (TVP)	0.033	0.018