In this issue:
- The United Nations Secretary-General António Guterres’ message for the International Day for the Preservation of the Ozone Layer, 16 September 2019
- Commemoration of World Ozone Day 2019 - Video address by Inger Andersen, Executive Director, UNEP
- World Ozone Day 2019, Letter to National Ozone Officers
- Assessment Panels to the Montreal Protocol - A tribute on the occasion of World Ozone Day 2019
- Copernicus Atmosphere Monitoring Service monitors a very unusual 2019 ozone hole