False color image of the south  pole showing the extent of the 'ozone hole' in  the year 2000.
International Ozone Commission banner


International Ozone Commission (IO3C)

The International Ozone Commission was established in 1948 as one of the special commissions of the International Union of Geodesy and Geophysics, who represent the entire community of geophysical scientists around the world. The purpose of the IO3C is to help organize the study of ozone around the world, including ground-based and satellite measurement programs and analyses of the atmospheric chemistry and dynamical processes affecting ozone. (read more)

This website discusses recent outcomes and events associated with the International Ozone Commission. Last update: 15 September 2016.

The 2016 Quadrenial Ozone Symposium was held in Edinburgh, Scotland on 4-9 September 2016. See the News section for more information.