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].

DayDataset RMSEStandard deviationBias

May 9, 20041 km downscaled 0.223 0.119 0.043 −0.112
AMSR-E0.0500.1290.053−0.114
NLDAS0.1710.1050.074−0.077

May 22, 20041 km downscaled 0.360 0.128 0.044 −0.123
AMSR-E0.1610.1140.059−0.100
NLDAS0.2640.1080.077−0.084

July 17, 20051 km downscaled 0.020 0.168 0.055 −0.155
AMSR-E * 0.1600.063−0.136
NLDAS0.0050.0990.059−0.068

July 21, 20051 km downscaled 0.031 0.130 0.047 −0.115
AMSR-E0.0010.1430.053−0.126
NLDAS0.0020.1060.056−0.081

August 9, 20051 km downscaled 0.010 0.167 0.050 −0.155
AMSR-E0.0050.1460.050−0.130
NLDAS0.0060.1030.055−0.074

August 18, 20051 km downscaled 0.225 0.166 0.058 −0.158
AMSR-E0.3870.1600.053−0.154
NLDAS0.1140.1060.064−0.075

<0.001.