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Validation Summary
The Sentinel-5p TROPOMI L2 CH4 data product (dry air averaged methane 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_CH4 | RPRO/OFFL | xCH4 | -0.25% | 0.6% | Along orbit stripes. Underestimation at low albedo. Remaining outliers with qa_value >0.5. 1-4% seasonal and SZA dependence of bias. Lower number of pixels with qa_value>0.5 between March 11 2020 and July 1 2021 due to changed cloud data. |
The averaged correlation coefficient is 0.65 for the TCCON network
Plots show the weekly mean relative differences for the S5P RPRO/OFFL xCH4 columns against TCCON (top) and NDACC (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 |
| #13: April 2018 - December 2021 | See sentinel.esa.int |
02.03.01 |