Validation Results

Summary: CCI v5_2 2001 incl filters ISMN only good anomalies - GOOD

  • Started validation on Sept. 22, 2020, 3:36 p.m. UTC, finished on Sept. 22, 2020, 3:48 p.m. UTC.
  • Compared 2 datasets:
    • Dataset 1: 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: Quality flag is "good" (G); ]
  • Validated globally.
  • Validation period / temporal filter: Jan. 1, 2001, midnight UTC to Sept. 22, 2020, 11:59 p.m. UTC.
  • Validation metrics calculated from anomalies against 35 day moving average.
  • Triple collocation analysis was deactivated.
  • Scaling reference: ISMN (20191211 global, soil_moisture) [Filters: Quality flag is "good" (G); ]
  • Scaling method: Mean/standard deviation.
  • Processing took 12 minutes (wall time).
  • 0% (0 of 2869) of the processed locations (grid points) produced errors during calculation.
  • This result was published on zenodo with DOI 10.5281/zenodo.4288913.

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 1.11e+03 868.5 1.47e+03 All datasets
Bias (difference of means) [m³/m³] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v05.2)
Mean square error [(m³/m³)²] 1.09 1.38e-03 1.39e-03 1-ESA_CCI_SM_combined (v05.2)
Mean square error bias [(m³/m³)²] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v05.2)
Mean square error correlation [(m³/m³)²] 1.09 1.38e-03 1.39e-03 1-ESA_CCI_SM_combined (v05.2)
Mean square error variance [(m³/m³)²] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v05.2)
Pearson's r [-] 0.36 0.37 0.22 1-ESA_CCI_SM_combined (v05.2)
Pearson's r p-value [-] 3.74e-02 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v05.2)
Residual sum of squares [(m³/m³)²] 508.95 0.97 2.04 1-ESA_CCI_SM_combined (v05.2)
Root-mean-square deviation [m³/m³] 5.94e-02 3.72e-02 1.86e-02 1-ESA_CCI_SM_combined (v05.2)
Spearman's rho [-] 0.35 0.36 0.21 1-ESA_CCI_SM_combined (v05.2)
Spearman's rho p-value [-] 3.42e-02 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v05.2)
Unbiased root-mean-square deviation [m³/m³] 5.94e-02 3.72e-02 1.86e-02 1-ESA_CCI_SM_combined (v05.2)

Result files

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