WMO/UNEP Scientific Assessments of Ozone Depletion
An Ongoing International Collaboration
An international agreement known as the Montreal Protocol on Substances That Deplete the Ozone Layer was reached in 1987. Through that agreement and its subsequent amendments and adjustments, many nations of the world have carried out policies to reduce and then phase out their use of ozone-depleting chemicals. The Montreal Protocol also called for the international scientific community to periodically update governments on the latest scientific findings related to the ozone layer. Conducted under the auspices of the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) and co-sponsored by NASA, NOAA, and the European Commission, these periodic "state-of-the-science" assessments have guided policymakers as they strengthened the original provisions of the Montreal Protocol. Together with colleagues at NASA, other NOAA laboratories, and other scientific institutions across the U.S. and around the world, CSD (formerly the Aeronomy Laboratory) has played a leading role in preparing these assessments (1985, 1988, 1991, 1994, 1998, 2002, 2006, and 2010).
- Scientific Assessment of Ozone Depletion: 2010
- Full Report, including the Preface and Executive Summary
- "Prologue: State of the Science through the 2006 WMO/UNEP Assessment"
- "Twenty Questions and Answers About the Ozone Layer: 2010 Update"
- List of International Authors, Contributors, and Reviewers of the Assessment
- including Titles, Lead Authors, and Summaries of 5 Chapters of the full report
- Scientific Assessment of Ozone Depletion: 2006
- Full Report, including the Executive Summary
- "Twenty Questions and Answers About the Ozone Layer: 2006 Update"
- List of International Authors, Contributors, and Reviewers of the Assessment
- including Titles and Lead Authors of 8 Chapters of the full report
- Scientific Assessment of Ozone Depletion: 2002
- Full Report, including the Executive Summary
- "Twenty Questions and Answers About the Ozone Layer"
- List of International Authors, Contributors, and Reviewers of the Assessment
- including Titles and Lead Authors of the 5 Chapters of the full report
- Scientific Assessment of Ozone Depletion: 1998
- Full Report, including the Executive Summary
- "Frequently Asked Questions About Ozone"
- List of International Authors, Contributors, and Reviewers of the Assessment
- including Titles and Lead Authors of the 12 Chapters of the full report
- Scientific Assessment of Ozone Depletion: 1994
- Full Report, including the Executive Summary
- "Common Questions About Ozone"
- List of International Authors, Contributors, and Reviewers of the Assessment
- including Titles and Lead Authors of the 13 Chapters of the full report
- Full Reports (PDFs) are also available under the cover images of prior Assessments:
![2010 Assessment cover](images/assess10.gif)
![2006 Assessment cover](images/assess06.jpg)
![2002 Assessment cover](images/assess02.jpg)
![1998 Assessment cover](images/assess98.gif)
![1994 Assessment cover](images/assess94.jpg)