International Ozone Commission

Press Release: The International Ozone Commission, on the 35th anniversary of the Montreal Protocol, reports new milestones in documenting ozone layer recovery

September 16^th is the International Day for the Preservation of the Ozone Layer, celebrating the 35^th signing anniversary of the 1987 Montreal Protocol treaty on Substances that Deplete the Ozone Layer. We would like to report success in the reduction of the ozone-depleting substances (ODSs) in the stratosphere by about 25 % since their peak in the late 1990s, which sets the ozone layer on the path of recovery by 2060.

In Memoriam William Ball

Joint Special Issue for studies presented at the 2021 Quadrennial Ozone Symposium

Journals: Atmospheric Chemistry and Physics (ACP) and Atmospheric Measurement Techniques (AMT)

1 December 2021 – 31 December 2022

Atmospheric ozone and related species in the early 2020s: latest results and trends

The Quadrennial Ozone Symposium (QOS) held on line on October 3-9, 2021 was a great success with 341 registered participants from various countries around the world.

It was the first online meeting of QOS history. Up to 230 participants connected to the various sessions of the Symposium. There were still about 140 connections during the last session on Saturday 9 October.

During the opening session on Sunday, October 3rd, 2021, the Dobson and Farman awards were given to Dr. William Ball and the SBUV-MOD team of NASA, as previously announced.