RT Report T1 Scientific Assessment of Ozone Depletion: 2018 - Global Ozone Research and Monitoring Project Report No. 58 A1 United Nations Environment Programme, K1 ozone K1 ozone layer K1 ozone-depleting substance K1 stratosphere K1 climate change K1 Ozone SN 978-1-7329317-1-8 YR 2018 FD 2018 LK https://wedocs.unep.org/handle/20.500.11822/32140 UL https://wedocs.unep.org/handle/20.500.11822/32140 NO The Assessment documents the advances in scientific understanding of ozone depletion reflecting the thinking of the many international scientific experts who have contributed to its preparation and review. These advances add to the scientific basis for decisions made by the Parties to the Montreal Protocol. It is based on longer observational records, new chemistry- climate model simulations, and new analyses. DS UN Environment Document Repository RD Sep 24, 2026