The TROPOMI Nitrogen Dioxide (NO2) product is a foundational element of the Level-2 processing suite for S5P/TROPOMI data. As a primary precursor to anthropogenic ozone, NO2 is instrumental in the formation of various airborne compounds, including nitric acid, fine particles, peroxyacetyl nitrate, nitrosamines, and nitro-polycyclic aromatic hydrocarbons. By operationally retrieving both tropospheric and stratospheric column densities, the instrument provides essential data for atmospheric composition monitoring.
Key Features and Applications
These products represent a significant advancement over previous satellite-based datasets, offering unprecedented spatial resolution that allows for the observation of localized emission sources with enhanced clarity. The retrieval process features refined techniques that improve data accuracy, including a robust separation of stratospheric and tropospheric contributions within the retrieved slant columns, as well as highly optimized calculations for the air-mass factors required to convert these slant columns into total vertical columns.
Dataset Specifications
Examples of filenames (a.k.a. granules):
S5P_OFFL_L2__NO2____20260125T184544_20260125T202714_42937_03_020901_20260127T110120.nc S5P_NRTI_L2__NO2____20260125T190813_20260125T191313_42937_03_020901_20260125T200947.nc S5P_RPRO_L2__NO2____20220701T230527_20220702T004657_24439_03_020400_20230203T014633.nc |
|
Elements in the filename separated by underscores after the initial "S5P": |
Dataset Specifications V2 | |
| Temporal Coverage |
Since 01-Jul-2021 Reprocessed (RPRO) dataset: from 30-Apr-2018 to 25-Jul-2022 |
| Spatial Coverage |
~2600 km swath Full daily surface coverage of radiance and reflectance measurements for latitudes > 7° and < -7°, and better than 95 % coverage for latitudes in the interval [-7°, 7°] |
| Spatial Resolution at Nadir |
3.5 x 7.0 km (across x along track), at beginning of mission 3.5 x 5.5 km (across x along track), since 6 August 2019 |
| Processor Version | 02.xx.xx, with x=any digit between 0 and 9 |
Dataset Specifications V1 | |
| Temporal Coverage |
From 30-Apr-2018 to 01-Jul-2021 |
| Spatial Coverage |
~2600 km swath Full daily surface coverage of radiance and reflectance measurements for latitudes > 7° and < -7°, and better than 95 % coverage for latitudes in the interval [-7°, 7°] |
| Spatial Resolution at Nadir |
3.5 x 7.0 km (across x along track), at beginning of mission 3.5 x 5.5 km (across x along track), since 6 August 2019 |
| Processor Version | 01.xx.xx, with x=any digit between 0 and 9 |
How to Access the Data
The data related to this product and to the other S5P/TROPOMI products are accessible via the Copernicus Data Space Ecosystem (CDSE).
Documentation & Related Datasets
Technical documentation on the S5P/TROPOMI Level-1B and Level-2 products can be found on the the SentiWiki S5P Products page.
Dataset Citation Guidelines
Users, who, in their research, use ESA Earth Observation data that have been assigned a DOI, are asked to use it when citing the data source in their publications:
Dataset Citation Guidelines V2 |
| Copernicus Sentinel-5P (processed by ESA), 2021, TROPOMI Level 2 Nitrogen Dioxide total column products. Version 02. European Space Agency. https://doi.org/10.5270/S5P-9bnp8q8 |
Dataset Citation Guidelines V1 |
| Copernicus Sentinel-5P (processed by ESA), 2018, TROPOMI Level 2 Nitrogen Dioxide total column products. Version 01. European Space Agency. https://doi.org/10.5270/S5P-s4ljg54 |