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Scientific Assessment Panel (SAP)


The Scientific Assessment Panel (SAP) assesses the status of the depletion of the ozone layer and relevant atmospheric science issues. Pursuant to Article 6 of the Montreal Protocol on Substances that Deplete the Ozone Layer, a report is prepared every three or four years by the SAP which consists of hundreds of top scientists from around the world.

SAP reports
SAP September 2024: Report of the Scientific Assessment Panel in response to Decision XXXV/7: Emissions of HFC-23
SAP - Twenty Questions and Answers About the Ozone Layer: 2022 Update – Chinese language edition
SAP - Twenty Questions and Answers About the Ozone Layer: 2022 Update (Low resolution)
SAP - Twenty Questions and Answers About the Ozone Layer: 2022 Update (High resolution)
Scientific Assessment Of Ozone Depletion 2022
Scientific Assessment of Ozone Depletion 2022: Executive Summary
SAP - Report on the unexpected emissions of CFC-11
SAP - Twenty Questions and Answers About the Ozone Layer: 2018 Update
Scientific Assessment of Ozone Depletion: 2018
Scientific Assessment of Ozone Depletion: 2018 (Executive Summary)
Assessment for Decision-Makers - Scientific Assessment of Ozone Depletion: 2014
Scientific Assessment of Ozone Depletion 2014
SAP - Twenty Questions and Answers About the Ozone Layer: 2014 Update
Executive Summary of the Scientific Assessment of Ozone Depletion: 2010(WMO/UNEP)
Press Release, 16th September 2010: New Report Highlights Two-way Link between Ozone Layer and Climate Change
Twenty Questions and Answers About the Ozone Layer: 2010 Update
Scientific Assessment of Ozone Depletion: 2010
Press release - Geneva/Nairobi, 18 August 2006: New Report Projects Later Recovery of Ozone Layer But Early Signs of Mending Confirm Effectiveness of Montreal Protocol on Substances that Deplete the Ozone Layer
Background document: Executive Summary, Scientific Assessment of Ozone Depletion: 2006
Executive Summary of the Scientific Assessment of Ozone Depletion: 2006 (WMO/UNEP), 18 August 2006