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.

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 1.03e+03 768. 1.45e+03 All datasets
Bias (difference of means) [m³/m³] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v04.7)
Bias (difference of means) [m³/m³] ~ 0 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
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)
Mean square error bias [(m³/m³)²] ~ 0 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
Mean square error bias [(m³/m³)²] ~ 0 ~ 0 ~ 0 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)
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 variance [(m³/m³)²] ~ 0 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
Mean square error variance [(m³/m³)²] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v04.7)
Pearson's r [-] 0.45 0.48 0.34 1-ESA_CCI_SM_combined (v04.7)
Pearson's r [-] 0.46 0.5 0.33 2-ESA_CCI_SM_combined (v05.2)
Pearson's r p-value [-] 4.08e-02 ~ 0 3.59e-06 1-ESA_CCI_SM_combined (v04.7)
Pearson's r p-value [-] 3.96e-02 ~ 0 1.34e-06 2-ESA_CCI_SM_combined (v05.2)
Residual sum of squares [(m³/m³)²] 6.58 2.79 7.94 2-ESA_CCI_SM_combined (v05.2)
Residual sum of squares [(m³/m³)²] 6.73 2.83 8.17 1-ESA_CCI_SM_combined (v04.7)
Root-mean-square deviation [m³/m³] 6.93e-02 6.34e-02 3.83e-02 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)
Spearman's rho [-] 0.46 0.5 0.33 2-ESA_CCI_SM_combined (v05.2)
Spearman's rho [-] 0.45 0.48 0.34 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho p-value [-] 3.67e-02 ~ 0 3.49e-06 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho p-value [-] 3.93e-02 ~ 0 1.01e-06 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)
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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