Update on Ozone-Depleting Substances (ODSs) and Other Gases of Interest to the Montreal Protocol

Publication Type:

Book Chapter


Scientific Assessment of Ozone Depletion: 2018, Global Ozone Research and Monitoring Project — Report No. 58, World Meteorological Organization, Geneva, Switzerland (2018)


The 2018 WMO/UNEP assessment contains the most up-to-date understanding of ozone depletion, reflecting the thinking of hundreds of international scientific experts who contribute to its preparation and review. Co-Chairs of the 2018 Scientific Assessment Panel (SAP) of the Montreal Protocol on Substances that Deplete the Ozone Layer are Dr. David W. Fahey of the NOAA Earth System Research Lab (ESRL) Chemical Sciences Division, USA, Dr. Paul A. Newman of the NASA Goddard Space Flight Center, USA, Dr. John A. Pyle of the University of Cambridge, UK, and Prof. Bonfils Safari of the College of Science and Technology, University of Rwanda, Kigali. Sarah Doherty of CIRES at the University of Colorado and JISAO at the University of Washington, USA is the Assessment Coordinator. Other members of ESRL are making substantial contributions to the report, serving as coauthors, contributors, reviewers, and editorial and support staff.

The Scientific Assessment of Ozone Depletion: 2018 contains the 2018 core assessment report, with the Executive Summary and Twenty Questions and Answers About the Ozone Layer update booklets.