Validation Results

Summary: COMBINED 47 vs 52 FULL PERIOD

  • Started validation on Oct. 5, 2020, 9:06 p.m. UTC, finished on Oct. 5, 2020, 9:25 p.m. UTC.
  • Compared 3 datasets:
    • Dataset 1: ESA CCI SM combined (v04.7, sm) [Filters: Not freezing and no snow-cover (flag != 1); No dense vegetation (flag != 2); Variable in valid geophysical range; Data with no inconsistencies detected (flag = 0); ]
    • Dataset 2: ESA CCI SM combined (v05.2, sm) [Filters: Not freezing and no snow-cover (flag != 1); No dense vegetation (flag != 2); Variable in valid geophysical range; Data with no inconsistencies detected (flag = 0); ]
    • Reference: ISMN (20191211 global, soil_moisture) [Filters: Variable in valid geophysical range; Quality flag is "good" (G); ]
  • Spatial filter bounding box: [-58.9036414889778, -164.71674596996, 77.3912105521884, 179.0].
  • Validation period / temporal filter: Jan. 1, 1978, midnight UTC to Oct. 5, 2020, 11:59 p.m. UTC.
  • Validation metrics calculated from absolute values.
  • Triple collocation analysis was deactivated.
  • Scaling reference: ISMN (20191211 global, soil_moisture) [Filters: Variable in valid geophysical range; Quality flag is "good" (G); ]
  • Scaling method: Mean/standard deviation.
  • Processing took 19 minutes (wall time).
  • 0% (0 of 2862) of the processed locations (grid points) produced errors during calculation.
  • This result was published on zenodo with DOI 10.5281/zenodo.4118073.
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Summary statistics

The mean, median and standard deviation are calculated on the validation results aggregated by metric and dataset. The reference dataset used is ISMN (20191211 global, soil_moisture).

Metric Mean Median IQ range Dataset
# observations 1028.6 768.0 1450.5 All datasets
Bias (difference of means) [m³/m³] 2.58e-09 1.05e-09 2.45e-08 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho [-] 4.62e-01 4.97e-01 3.34e-01 2-ESA_CCI_SM_combined (v05.2)
Spearman's rho [-] 4.51e-01 4.84e-01 3.40e-01 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho p-value [-] 3.93e-02 5.61e-45 1.01e-06 2-ESA_CCI_SM_combined (v05.2)
Spearman's rho p-value [-] 3.67e-02 2.64e-42 3.49e-06 1-ESA_CCI_SM_combined (v04.7)
Pearson's r p-value [-] 3.96e-02 3.78e-44 1.34e-06 2-ESA_CCI_SM_combined (v05.2)
Pearson's r p-value [-] 4.08e-02 1.73e-42 3.59e-06 1-ESA_CCI_SM_combined (v04.7)
Mean square error variance [(m³/m³)²] 1.08e-17 3.67e-18 1.09e-17 2-ESA_CCI_SM_combined (v05.2)
Mean square error variance [(m³/m³)²] 1.00e-17 3.37e-18 1.06e-17 1-ESA_CCI_SM_combined (v04.7)
Mean square error correlation [(m³/m³)²] 5.73e-03 3.91e-03 5.01e-03 2-ESA_CCI_SM_combined (v05.2)
Unbiased root-mean-square deviation [m³/m³] 6.93e-02 6.34e-02 3.83e-02 1-ESA_CCI_SM_combined (v04.7)
Mean square error correlation [(m³/m³)²] 5.86e-03 4.02e-03 5.08e-03 1-ESA_CCI_SM_combined (v04.7)
Mean square error bias [(m³/m³)²] 5.35e-16 1.42e-16 4.89e-16 1-ESA_CCI_SM_combined (v04.7)
Mean square error [(m³/m³)²] 5.73e-03 3.91e-03 5.01e-03 2-ESA_CCI_SM_combined (v05.2)
Mean square error [(m³/m³)²] 5.86e-03 4.02e-03 5.08e-03 1-ESA_CCI_SM_combined (v04.7)
Residual sum of squares [(m³/m³)²] 6.58e+00 2.79e+00 7.94e+00 2-ESA_CCI_SM_combined (v05.2)
Residual sum of squares [(m³/m³)²] 6.73e+00 2.83e+00 8.17e+00 1-ESA_CCI_SM_combined (v04.7)
Root-mean-square deviation [m³/m³] 6.84e-02 6.26e-02 3.83e-02 2-ESA_CCI_SM_combined (v05.2)
Root-mean-square deviation [m³/m³] 6.93e-02 6.34e-02 3.83e-02 1-ESA_CCI_SM_combined (v04.7)
Pearson's r [-] 4.62e-01 4.95e-01 3.35e-01 2-ESA_CCI_SM_combined (v05.2)
Pearson's r [-] 4.50e-01 4.81e-01 3.38e-01 1-ESA_CCI_SM_combined (v04.7)
Bias (difference of means) [m³/m³] -8.42e-10 -9.17e-10 2.27e-08 2-ESA_CCI_SM_combined (v05.2)
Mean square error bias [(m³/m³)²] 4.94e-16 1.30e-16 4.28e-16 2-ESA_CCI_SM_combined (v05.2)
Unbiased root-mean-square deviation [m³/m³] 6.85e-02 6.26e-02 3.83e-02 2-ESA_CCI_SM_combined (v05.2)

Result files

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