Update after feedback from Lonzee station PI: quantitative information on the agreement for the overlapping period added.
Example message with the output in the tool after selecting a site and year with ICOS data:
Daily averages for year 2021 from the "ICOS Level 2" release are compared to daily averages during 2010-2020 from the "Warm Winter 2020" release. In the year 2020, both releases contain data for this site, and they exhibit a strong correlation in the variable GPP_DT_VUT_REF, with a correlation coefficient (R) exceeding 0.95. The RMSE is 1.57 and bias (Warm Winter minus ICOS Level 2) -0.79 µmol/m²/s.
Message also added to the output csv file:
Please note that the Warm Winter release contains PI-processed data and can sometimes differ significantly from the ICOS Level 2 data. Here is how they compare for the overlapping year 2020 at this site:
Correlation (R): 0.99
RMSE: 1.57
Bias (Warm Winter release minus ICOS Level 2 release): -0.79
Update after feedback from Lonzee station PI: quantitative information on the agreement for the overlapping period added.
Example message with the output in the tool after selecting a site and year with ICOS data: Daily averages for year 2021 from the "ICOS Level 2" release are compared to daily averages during 2010-2020 from the "Warm Winter 2020" release. In the year 2020, both releases contain data for this site, and they exhibit a strong correlation in the variable GPP_DT_VUT_REF, with a correlation coefficient (R) exceeding 0.95. The RMSE is 1.57 and bias (Warm Winter minus ICOS Level 2) -0.79 µmol/m²/s.
Message also added to the output csv file: Please note that the Warm Winter release contains PI-processed data and can sometimes differ significantly from the ICOS Level 2 data. Here is how they compare for the overlapping year 2020 at this site: Correlation (R): 0.99 RMSE: 1.57 Bias (Warm Winter release minus ICOS Level 2 release): -0.79