The latest global products are distributed on the Ozone_cci ftp site at the following address:

Note: to access the ozone data, preferably use an ftp client application (such as FileZilla or equivalent). The ftp site is also directly accessible via browser. In this case, a dialogue window will pop up to request a password. To proceed to the site, just click 'Enter' with a blank password.

A list of the currently available ozone data products is available here.

Warning: the ozone data products currently distributed through the ESA CCI Open Data Portal are outdated and superseded by data sets available from the project ftp site (level-2 products) or from the C3S Data Store (level-3 products). We are working on a revision of the Open Data Portal data base, which will be announced on this page as soon as it is ready.

Mean Total Ozone Column in Dobson Units (1979-2019) - interactive globe