Note: The S5P L2_CH4 data product has recently been reprocessed with processor version 02.04.00, replacing older data versions. First validation results for this full-mission reprocessing are published in the quarterly validation report #18. Users still making use of previous data versions are requested to refer to the quarterly validation report #17.
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||+0.3%||0.7%||Along orbit stripes. Underestimation at low albedo. Remaining outliers with qa_value >0.5.
Outlying CH4 values observed along coastal or mountain regions, e.g. in Greenland.
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|
|#18: April 2018 - February 2023||See sentinel.esa.int||