Table 14: Comparison statistics between the 1 km downscaled, NLDAS, and AMSR-E soil moisture compared to the Little Washita soil moisture observations for 6 relatively clear days. RMSE, bias, and standard deviations are in (m3/m3) [61].

DayDatasetNumber of pointsRMSEStandard deviationBias

May 4, 20041 km downscaled 8 0.043 0.015 0.009
AMSR-E3−0.019
NLDAS60.0400.0200.016

May 6, 20041 km downscaled8 0.077 0.015 0.032
AMSR-E30.005
NLDAS60.0550.0170.035

July 3, 20051 km downscaled 6 0.066 0.070 0.006
AMSR-E30.010
NLDAS40.0610.0700.020

July 17, 20051 km downscaled 2 0.050 0.015 0.047
AMSR-E 2 0.031
NLDAS20.0570.0150.056

August 2, 20051 km downscaled 7 0.031 0.019 0.024
AMSR-E 3 0.027
NLDAS40.0480.0140.046

August 4, 20051 km downscaled7 0.022 * 0.022
AMSR-E3 0.023
NLDAS40.0480.0100.047

<0.001.