Remote Sensing of Soil Moisture

Table 13

Comparison statistics between the 1 km downscaled, NLDAS, and AMSR-E soil moisture compared to the Oklahoma Mesonet for 6 relatively clear days. RMSE, bias, and standard deviations are in (m³/m³) [61].

Day	Dataset	𝑅^2	RMSE	Standard deviation	Bias
May 9, 2004	1 km downscaled	0.223	0.119	0.043	−0.112
	AMSR-E	0.050	0.129	0.053	−0.114
	NLDAS	0.171	0.105	0.074	−0.077
May 22, 2004	1 km downscaled	0.360	0.128	0.044	−0.123
	AMSR-E	0.161	0.114	0.059	−0.100
	NLDAS	0.264	0.108	0.077	−0.084
July 17, 2005	1 km downscaled	0.020	0.168	0.055	−0.155
	AMSR-E	*	0.160	0.063	−0.136
	NLDAS	0.005	0.099	0.059	−0.068
July 21, 2005	1 km downscaled	0.031	0.130	0.047	−0.115
	AMSR-E	0.001	0.143	0.053	−0.126
	NLDAS	0.002	0.106	0.056	−0.081
August 9, 2005	1 km downscaled	0.010	0.167	0.050	−0.155
	AMSR-E	0.005	0.146	0.050	−0.130
	NLDAS	0.006	0.103	0.055	−0.074
August 18, 2005	1 km downscaled	0.225	0.166	0.058	−0.158
	AMSR-E	0.387	0.160	0.053	−0.154
	NLDAS	0.114	0.106	0.064	−0.075

∗<0.001.