Data products

Tropospheric Ozone Column


Ozone (O3) in the troposphere, acts as an efficient cleansing agent, but at high concentration it also becomes harmful to the health of humans, animals, and vegetation. Downward transport of ozone from the stratosphere contributes to the tropospheric ozone abundance, but ozone is also produced in the troposphere by sunlight driven chemical reaction cycles by the emissions of nitrogen oxides and hydrocarbons resulting in an increase of ozone near the surface (‘summer smog’) and a degradation of air quality on a global scale. As such, it is important that TROPOMI will provide a separate data products focusing on the tropospheric ozone concentration. There are many techniques that can be employed including the ozone profile retrieval, the Convective Cloud Differential (CCD), and the Cloud Slicing (CS) methods. The CCD and CS algorithms focus on the tropical band (20°S to 20°N) where a significant impact of climate change on the tropospheric ozone is expected. Here an example of the S5P tropospheric column data for end of May 2018 is shown. 

Data product version summary (click on highlighted version number for the latest PRF).
Version number Version Effective Date Summary of Changes
1.01.07 OFFL: 2019-04-16 (orbit 07804 to present)

Current version


OFFL: 2019-03-21 (orbit 07435 to 07791)



OFFL: 2018-12-14 (orbit 06059 to 07421)




Links to the Algorithm Theoretical Basis Document (ATBD), the Product User Manual (PUM), and the Product Readme File (PRF) are located on the right of this page under Documentation. Note: this data product was publically released on 1 March 2019 and is available via the Copernicus Open Data Access Hub (see link on right).