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 the merged CCD tropospheric ozone columns based on both OMI and GOME-2 data for May 2016 are shown. These products are available at

Data Product Version Summary (click the current version number for the latest ATBD)
Version number Version Effective Date Summary of Changes
1.0.0 6 months post-launch to next update Post-Phase E1 updates
0.11.04 launch to 6 months post-launch First product release



The Algorithm Theoretical Basis Document (ATBD) can be found by clicking here and the Product User Manual (PUM) link is located on the right under Documentation. In the future, sample data will be available for download on this page. 

After launch, preliminary product results will be provided during the Commissioning Phase E1 and the Operational Phase. Product README (PRF) files will be created during Phase E1 in preparation for the Operational Phase.