Validation Results

Summary: CCI_COMBINED_v047_v052_ISMN_SMAP_period

  • Started validation on Oct. 23, 2020, 6:53 a.m. UTC, finished on Oct. 23, 2020, 7 a.m. UTC.
  • Compared 3 datasets:
    • Dataset 1: ESA CCI SM combined (v04.7, sm) [Filters: Variable in valid geophysical range; Data with no inconsistencies detected (flag = 0); ]
    • Dataset 2: ESA CCI SM combined (v05.2, sm) [Filters: Variable in valid geophysical range; ]
    • Reference: ISMN (20191211 global, soil_moisture) [Filters: Variable in valid geophysical range; Quality flag is "good" (G); Use ISMN networks: AMMA-CATCH,BIEBRZA-S-1,BNZ-LTER,CARBOAFRICA,COSMOS,CTP-SMTMN,DAHRA,FLUXNET-AMERIFLUX,FMI,FR-Aqui,HOBE,iRON,LAB-net,MySMNet,OZNET,PBO-H2O,REMEDHUS,RISMA,RSMN,SCAN,SMOSMANIA,TERENO,USCRN,WEGENERNET,WSMN; Use measurements at given depth: 0.00,0.10; ]
  • Validated globally.
  • Validation period / temporal filter: April 1, 2015, midnight UTC to Dec. 31, 2019, 11:59 p.m. UTC.
  • Validation metrics calculated from absolute values.
  • Triple collocation analysis was activated.
  • Scaling reference: ISMN (20191211 global, soil_moisture) [Filters: Variable in valid geophysical range; Quality flag is "good" (G); Use ISMN networks: AMMA-CATCH,BIEBRZA-S-1,BNZ-LTER,CARBOAFRICA,COSMOS,CTP-SMTMN,DAHRA,FLUXNET-AMERIFLUX,FMI,FR-Aqui,HOBE,iRON,LAB-net,MySMNet,OZNET,PBO-H2O,REMEDHUS,RISMA,RSMN,SCAN,SMOSMANIA,TERENO,USCRN,WEGENERNET,WSMN; Use measurements at given depth: 0.00,0.10; ]
  • Scaling method: Mean/standard deviation.
  • Processing took 6 minutes (wall time).
  • 0% (0 of 1382) of the processed locations (grid points) produced errors during calculation.
  • This result was published on zenodo with DOI 10.5281/zenodo.4120185.

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 667.7 626. 596. All datasets
Bias (difference of means) [m³/m³] ~ 0 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
Bias (difference of means) [m³/m³] ~ 0 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v04.7)
Error standard deviation [m³/m³] 1.12e-02 9.50e-03 1.02e-02 1-ESA_CCI_SM_combined (v04.7); other ref: 2-ESA_CCI_SM_combined (v05.2)
Error standard deviation [m³/m³] 6.67e-03 5.22e-03 6.53e-03 2-ESA_CCI_SM_combined (v05.2); other ref: 1-ESA_CCI_SM_combined (v04.7)
Mean square error [(m³/m³)²] 4.05e-03 3.07e-03 3.34e-03 2-ESA_CCI_SM_combined (v05.2)
Mean square error [(m³/m³)²] 4.28e-03 3.31e-03 3.74e-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] 4.05e-03 3.07e-03 3.34e-03 2-ESA_CCI_SM_combined (v05.2)
Mean square error correlation [(m³/m³)²] 4.28e-03 3.31e-03 3.74e-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 [-] 0.51 0.56 0.32 1-ESA_CCI_SM_combined (v04.7)
Pearson's r [-] 0.54 0.6 0.32 2-ESA_CCI_SM_combined (v05.2)
Pearson's r p-value [-] 2.24e-02 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v04.7)
Pearson's r p-value [-] 2.16e-02 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
Residual sum of squares [(m³/m³)²] 2.98 1.91 3.32 1-ESA_CCI_SM_combined (v04.7)
Residual sum of squares [(m³/m³)²] 2.78 1.75 3.07 2-ESA_CCI_SM_combined (v05.2)
Root-mean-square deviation [m³/m³] 6.e-02 5.76e-02 3.25e-02 1-ESA_CCI_SM_combined (v04.7)
Root-mean-square deviation [m³/m³] 5.83e-02 5.54e-02 3.03e-02 2-ESA_CCI_SM_combined (v05.2)
Signal-to-noise ratio [db] 10.96 10.45 6.47 1-ESA_CCI_SM_combined (v04.7); other ref: 2-ESA_CCI_SM_combined (v05.2)
Signal-to-noise ratio [db] 15.41 15.56 8.38 2-ESA_CCI_SM_combined (v05.2); other ref: 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho [-] 0.51 0.55 0.33 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho [-] 0.53 0.58 0.32 2-ESA_CCI_SM_combined (v05.2)
Spearman's rho p-value [-] 2.02e-02 ~ 0 ~ 0 1-ESA_CCI_SM_combined (v04.7)
Spearman's rho p-value [-] 1.93e-02 ~ 0 ~ 0 2-ESA_CCI_SM_combined (v05.2)
TC scaling coefficient [m³/m³] 0.56 0.63 0.33 1-ESA_CCI_SM_combined (v04.7); other ref: 2-ESA_CCI_SM_combined (v05.2)
TC scaling coefficient [m³/m³] 0.54 0.59 0.33 2-ESA_CCI_SM_combined (v05.2); other ref: 1-ESA_CCI_SM_combined (v04.7)
Unbiased root-mean-square deviation [m³/m³] 5.83e-02 5.54e-02 3.03e-02 2-ESA_CCI_SM_combined (v05.2)
Unbiased root-mean-square deviation [m³/m³] 6.e-02 5.76e-02 3.25e-02 1-ESA_CCI_SM_combined (v04.7)

Result files

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