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 may also pose a threat to aviation, along with volcanic ash. The S5P sensor TROPOMI samples the Earth’s surface with a revisit time of one day and with an unprecedented spatial resolution of 7x7 km. This allows the resolution of fine details and S5P will arguably be a valuable tool to better study anthropogenic SO2 emissions but also volcanic emissions, from degassing to eruptive processes. Read more about TROPOMI SO2 via this link.

Data product version summary (click on the latest version number for current ATBD). Note: once this data product is publically release a link will be provided to the 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) and the Product User Manual (PUM) are located on the right of this page under Documentation. This data product is planned for release in the third quarter of 2018. Once released, the Product Readme files (PRF) will be made available here.