Data products

Sulphur Dioxide


Sulphur dioxide (SO2) enters the Earth’s atmosphere through both natural and anthropogenic processes. It plays a role in chemistry on a local and global scale and its impact ranges from short term pollution to effects on climate. Only about 30% of the emitted SO2 comes from natural sources; the majority is of anthropogenic origin. SO2 emissions adversely affect human health and air quality. SO2 has an effect on climate through radiative forcing, via the formation of sulphate aerosols. Volcanic SO2 emissions can also pose a threat to aviation, along with volcanic ash. S5P/TROPOMI samples the Earth’s surface with a revisit time of one day with unprecedented spatial resolution of 3.5 x 7 km which allows the resolution of fine details including the detection of much smaller SO2 plumes. Here, below is an image of TROPOMI SO2 averaged over the six-month period of Nov 2017 - Jul 2018. Read more about TROPOMI SO2 via this link.

Data product version summary (click on the latest version number for current PRF). 

Version number Version Effective Date (orbit range) Summary of Changes


NRTI: 2018-08-08 (orbit 04243 to present)
OFFL: 2018-08-01 (orbit 04147 to present)

Current version


NRTI: 2018-07-18 (orbits 03947 to 04242)
OFFL: 2018-07-11 (orbits 03848 to 04146)



NRTI: 2018-05-09 (orbits 02955 to 03946)




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. This data product was released in October 2018 and is now available on the Copernicus Open Data Access Hub (see link on the right).