Validation Summary
The Sentinel-5p TROPOMI L2_NO2 data (tropospheric, stratospheric, and total NO2 column) are in good overall agreement with correlative ground-based measurements (NDACC MAX-DOAS, NDACC ZSL-DOAS, and PGN direct-sun DOAS) and with the OMI QA4ECV NO2 satellite data. Bias estimates meet the mission requirements of <50% for tropospheric NO2 and <10% for stratospheric NO2. For stratospheric NO2, the dispersion estimate meets the mission requirement of <0.5 Pmolec/cm2. For tropospheric Pmolec/cm2 the dispersion estimate exceeds the mission requirement of <0.7 Pmolec/cm2, which can however be attributed partly to comparison errors (irreducible co-location mismatch, and smoothing differences).
| Product ID | Stream | Product | Bias | Dispersion | Special features |
| L2_NO2 | NRTI | NO2 troposphere | -37% | 2.6 Pmolec/cm2 | Bias and dispersion by column amount: Troposphere [<2 Pmolec/cm²] +13 % and [>15 Pmolec/cm²] -40 %. Total [+/-6 Pmolec/cm²]: +6 % / -17 %. |
| NO2 stratosphere | -3% | 0.3 Pmolec/cm2 | |||
| NO2 total | 0±50% | - | |||
| OFFL RPRO |
NO2 troposphere | -29% | 3.1 Pmolec/cm2 | ||
| NO2 stratosphere | -3% | 0.3 Pmolec/cm2 | |||
| NO2 total | -9% | 1.6 Pmolec/cm2 |
Below is an overview of the processor versions for the NRTI, OFFL and RPRO streams.
| Product ID | Stream | Version | Orbits |
| L2_NO2 | NRTI | 02.06.00 | 31751-current version |
| 02.05.00 | 28078-31750 | ||
| 02.04.00 | 24697-28074 | ||
| OFFL | |||
| 02.06.00 | 31705-current version | ||
| 02.05.00 | 28030-31704 | ||
| 02.04.00 | 24655-28029 | ||
| RPRO | 02.04.00 | 2818-24654 |
A detailed description of the method and a comprehensive discussion of validation results can be found in the Sentinel-5p Quarterly Validation Report #24: April 2018 - August 2024
| Latest Quarterly Validation Report | Product info | Current Processor Version |
| #24: April 2018 - August 2024 | See sentinel.esa.int |
02.07.01 |