Article Index

Validation Summary

The Sentinel-5p TROPOMI L2 CO data product (total CO column) is in good overall agreement with correlative ground-based measurements from NDACC and TCCON. Bias and dispersion estimates (see Table below) meet mission requirements.

Product ID Stream Product Bias Dispersion Special features
 L2_CO NRTI CO column 6.5% 5% Along orbit stripes. Destriped CO data in OFFL from July 2021 onwards
5% SZA dependence of bias.
Outliers in SAA and other sporadic locations not filtered by qa_value.
Since July 2019 NRTI behaves similar as OFFL. Since the processor update in July 2021 (black vertical line) the bias is reduced to 3%.
RPRO/OFFL CO column 6.5% 5%


The averaged correlation coefficient reaches 0.9 for the TCCON network and 0.85 for the comparison against NDACC sites


 Mosaic CO TCCON

Plots show the weekly mean relative differences for the S5P RPRO/OFFL CO columns against NDACC (top) and TCCON (bottom) sites. Sites are sorted by decreasing latitude.

For more information please consult the latest issue of the Sentinel-5p Routine Operations Consolidated Validation Report (ROCVR).


Latest Quarterly Validation Report Product info Current Processor Version
#17: April 2018 - November 2022 See