Scientific Assessment of Ozone Depletion: 2026

Organization Chart

Assessment Co-Chairs

• Lucy Carpenter, University of York, UK
• David W. Fahey, NOAA Chemical Sciences Laboratory, USA
• Kenneth W. Jucks, NASA Earth Science Division, USA
• Bonfils Safari, University of Rwanda, Rwanda

Assessment Scientific Steering Committee

• Lucy Carpenter, University of York, UK
• David Fahey, NOAA Chemical Sciences Laboratory, USA
• Kenneth Jucks, NASA Earth Science Division, USA
• Bonfils Safari, University of Rwanda, Rwanda
• Julie Arblaster, Monash University, Australia
• Martyn Chipperfield, University of Leeds, UK
• Jianxin Hu, Peking University, China
• Stephen Montzka, NOAA Global Monitoring Laboratory, USA
• Michelle Santee, NASA Jet Propulsion Laboratory, California Institute of Technology, USA
• Guus Velders, National Institute for Public Health and the Environment (RIVM) & Utrecht University, Netherlands

Author Teams and Review Editors

Chapter 1: Update on Ozone-Depleting Substances (ODSs) and Other Gases of Interest to the Montreal Protocol

Lead Authors

• Andreas Engel, University of Frankfurt, Germany
• Sunyoung Park, Kyungpook National University, South Korea
• Bo Yao, China Meteorological Administration, China

Co-Authors

• Minde An, Massachusetts Institute of Technology (MIT), USA
• Anita Ganesan, University of Bristol, UK
• Isaac Virmont, NOAA, USA
• Paul Krummel, Commonwealth Scientific and Industrial Research Organisation (CSIRO) Oceans and Atmosphere, Climate Science Centre, Australia
• Ryan Hossaini, Lancaster University, UK
• Pamela Wales, NASA Sciences and Exploration Directorate & Morgan State University, USA
• Kimberlee Dubé, University of Saskatchewan, Canada

Review Editors

• Susann Tegtmeier, University of Saskatchewan, Canada
• Matt Rigby, University of Bristol, UK

Chapter 2: Hydrofluorocarbons (HFCs)

Lead Authors

• Stefan Reimann, Swiss Federal Laboratories for Materials Science and Technology (Empa), Switzerland
• Luke Western, University of Bristol, UK

Co-Authors

• Xuekun Fang, Zhejiang University, China
• Maria Garavagno, University of Bristol, UK
• Lei Hu, University of Colorado, Cooperative Institute for Research in Environmental Sciences (CIRES) at NOAA Global Monitoring Laboratory, USA
• Richie Kaur, Natural Resources Defense Council, USA
• Jens Mühle, University of California San Diego, Scripps Institution of Oceanography, USA
• Pallav Purohit, International Institute for Applied Systems Analysis, Austria
• Cathy Trudinger, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
• Guus Velders, National Institute for Public Health and the Environment (RIVM) & Utrecht University, Netherlands

Review Editors

• Johannes Laube, Forschungszentrum Jülich, Germany
• Tim Wallington, Ford Motor Company, Research & Advanced Engineering, USA

Chapter 3: Global Ozone: Past, Present & Future

Lead Authors

• Jessica Neu, NASA Jet Propulsion Laboratory (JPL), USA
• James Keeble, University of Cambridge, UK

Co-Authors

• Wolfgang Steinbrecht, Meteorological Observatory Hohenpeissenberg Deutscher Wetterdienst (DWD), Germany
• Natalya Kramarova, NASA Goddard Space Flight Center, USA
• Robert Damadeo, NASA Langley Research Center, USA
• Michaela Hegglin, Forschungszentrum Jülich, Germany
• Sean Davis, NOAA Chemical Sciences Laboratory, USA
• Luis Millan, NASA Jet Propulsion Laboratory (JPL), USA

Review Editors

• Birgit Hassler, Deutsches Zentrum für Luft und Raumfahrt (DLR), Institut für Physik der Atmosphäre (IPA), Germany
• Sophie Godin-Beekmann, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Centre National de la Recherche Scientifique (CNRS), Sorbonne University, France

Chapter 4: Polar Stratospheric Ozone: Past, Present & Future

Lead Authors

• Matthew B. Tully, Bureau of Meteorology, Australia
• Krzysztof Wargan, Science Systems and Applications Inc. (SSAI) at NASA Goddard Space Flight Center, USA

Co-Authors

• Simon P. Alexander, Australian Antarctic Division, Australia
• Jens-Uwe Grooß, Forschungszentrum Jülich, Germany
• Jos de Laat, Royal Netherlands Meteorological Institute, Netherlands
• Ulrike Langematz, Freie Universtät Berlin, Germany
• Damaris Kirsch Pinheiro, Federal Univeristy of Santa Maria, Brazil
• David A. Plummer, Environment and Climate Change Canada, Canada
• Kane Stone, Massachusetts Institute of Technology (MIT), USA
• Catherine Wilka, Stanford University, USA

Review Editors

• Paul Newman, NASA Goddard Space Flight Center, USA
• Mark Weber, Universität Bremen, Germany

Chapter 5: Stratospheric Ozone Changes and Climate

Lead Authors

• Marta Abalos, Universidad Complutense de Madrid, Spain
• Amy Butler, NOAA Chemical Sciences Laboratory, USA

Co-Authors

• Ghyslaine Boschat, Bureau of Meteorology, Australia
• Gabriel Chiodo, ETH Zürich, Switzerland
• Julia Mindlin, University of Leipzig, Germany
• Alison Ming, University of Cambridge, UK
• Lorenzo Polvani, Columbia University, USA
• William J. Randel, National Center for Atmospheric Research (NCAR), USA
• Michael Sigmond, Environment and Climate Change Canada, Canada

Review Editors

• Hella Garny, Deutsches Zentrum für Luft und Raumfahrt (DLR), Institut für Physik der Atmosphäre (IPA), Germany
• Susan Solomon, Massachusetts Institute of Technology (MIT), USA

Chapter 6: Solar Radiation Management and Its Potential Effect on the Stratospheric Ozone Layer

Lead Authors

• Amanda Maycock, University of Leeds, UK
• Pengfei Yu, Jinan University, China

Co-Authors

• James Haywood, University of Exeter and Met office Hadley Center, UK
• Ewa Bednarz, University of Colorado, Cooperative Institute for Research in Environmental Sciences (CIRES) at NOAA Chemical Sciences Laboratory, USA
• Sebastian Eastham, Imperial College London, UK
• Sandro Vattioni, ETH Zürich, Switzerland
• Ulrike Niemeier, Max Planck Institute for Meteorology, Germany

Review Editors

• Piers Forster, University of Leeds, UK
• Slimane Bekki, University of Paris, France

Chapter 7: Scenarios and Information for Policymakers

Lead Authors

• John Daniel, NOAA Chemical Sciences Laboratory, USA
• Qing Liang, NASA Goddard Space Flight Center, USA

Co-Authors

• Fuli Bai, Peking University, China
• Eric Fleming, Science Systems and Applications, Inc. (SSAI) at NASA Goddard Space Flight Center, USA
• Megan Lickley, Massachusetts Institute of Technology, USA
• Michael Prather, University of California Irvine, USA
• Robyn Schofield, The University of Melbourne, Australia
• Martin N. Ross, The Aerospace Corporation, USA
• David Sherry, NSA Ltd (Nolan Sherry & Associates), UK
• Helen Walter-Terrinoni, The Air Conditioning, Heating, and Refrigeration Institute (AHRI) and Technology and Economic Assessment Panel (TEAP) of the Montreal Protocol, USA

Review Editors

• Martin K. Vollmer, Swiss Federal Laboratories for Materials Science and Technology (Empa), Switzerland
• Lambert Kuijpers, A/gent b.v. Environmental Consultancy, Netherlands

Annex: Summary of Abundances, Lifetimes, ODPs, REs, GWPs, and GTPs

Lead Authors

• Jim Burkholder, NOAA Chemical Sciences Laboratory, USA
• Øivind Hodnebrog, Center for International Climate Research (CICERO), Norway

Review Editors

• Keith Shine, University of Reading, UK
• Mads P. Sulbaek Andersen, California State University, USA

Twenty Questions & Answers about the Ozone Layer

Lead Author

• Ross Salawitch, University of Maryland, USA

Co-Authors

• David Fahey, NOAA Chemical Sciences Laboratory, USA
• Laura McBride, University of Maryland, College Park, USA
• Richard McKenzie, National Institute of Water and Atmospheric Research (NIWA), New Zealand
• Chelsea Thompson, NOAA Chemical Sciences Laboratory, USA
• Mark Weber, University of Bremen, Germany