Level 2 Products

The TROPOMI Level 2 data products that are generated within the Copernicus ground system (or as otherwise noted) are listed in the table below. There are three different data streams: the near-real-time (NRTI) stream, the Non-Time Critical or Offline (OFFL) stream and the Reprocessing stream (RPRO). NRTI data are available within 3 hours after data acquisition and intended for users that need quick access to the data and for rapid use operational processing. However, NRTI data may sometimes be incomplete and has a slightly lower data quality as compared to the other data streams. Most data users should use the offline data, available within a few days after acquisition, or the latest version of reprocessed data. For longer term trend analysis, the latest version of the reprocessed data should be used to avoid shifts due to data version updates.

The data products contain information on the data quality for each TROPOMI ground pixel.  It is essential that TROPOMI data users understand and apply the data quality indicators available in the data. Practical information about version number, guidance about how to use the qa-value quality indicator as well as known product issues are summarized in the Product Readme Files (PRF). Additional, more detailed information about all quality and (meta)data fields is provided in the Product User Manual (PUM). Further details regarding the methods used for the retrieval algorithms can be found in the Algorithm Theoretical Basis Document (ATBD). All ATBDs, PUMs, and PRFs are available in the S5P document library. The TROPOMI team encourages users to contact us with any questions since user feedback helps improve the data quality. The latest data version information is provided on each data product page. Contact can be made via e-mail to EOSupport [at] Copernicus.esa.int.

Notification to all S5P/TROPOMI NO2 data users: 

The upgrade to version 2.2.0 (5 July 2021) leads to an increase of the tropospheric NO2 columns for cloud-free pixels. The previous upgrade to version 1.4.0 (2 December 2020) led to a substantial increase in the observed tropospheric NO₂ column amounts over polluted areas for scenes with small cloud fractions. Studies including both data before and after the activation of these versions will therefore show artificial (positive) jumps. For time series, trend studies or comparisons between years the results from the latest versions 2.2.0 and 1.4.0 should not be mixed with results from the older versions without accounting for these changes. This data record offset will be rectified once the reprocessed data series is made available. For a more detailed description please refer to the NO2 Product Readme File (PRF) and check out this link for an overview and access to sample data.