Assessment Panels

The Assessment Panels have been the pillars of the ozone protection regime since the very beginning of the implementation of the Montreal Protocol. Through provision of independent technical and scientific assessments and information, the Panels have helped the Parties reach informed decisions that have made the Montreal Protocol a world-recognized success.

UNEP initiated the process of setting up the assessment panels in 1988, pursuant to Article 6 of the Montreal Protocol, to assess the scientific issues of ozone depletion, environmental effects of ozone depletion, and the status of alternative substances and technologies and their economic implications.

Four panels, namely the panels for Scientific, Environmental Effects, Technology, and Economic Assessments were formally established and approved at the First Meeting of the Parties to the Montreal Protocol in 1989 where their first set of Terms of Reference were adopted. Shortly after the Second Meeting of the Parties in 1990, the Panels for Technical Assessment and the Panel for Economic Assessment were merged into one Panel called the Technology and Economic Assessment Panel (TEAP), which together with the Scientific Assessment Panel (SAP) and the Environmental Effects Assessment Panel (EEAP) make up the three assessment panels active today.

In accordance with Article 6 of the Montreal Protocol and subsequent decisions of the Parties, the three panels carry out a periodic assessment at least every 4 years. The first assessment reports were published in 1989 and since then major periodic assessments have been published by all three panels in 1991, 1994, 1998, 2002, 2006 and 2010. For each periodic assessment, the key findings of the panels are synthesized into a short report. The next assessment for 2014 is expected to be published in early 2015.

The TEAP is also tasked by the Parties every year to assess and evaluate various technical issues including evaluating nominations for essential use exemptions for CFCs and halons, and nominations for critical use exemptions for methyl bromide. TEAP’s annual reports are a basis for the Parties’ informed decision-making and TEAP also review the status of alternatives and technologies on an annual basis. The TEAP operates with six Technical Options Committees (TOCs):
  • Chemicals Technical Options Committee (CTOC)
  • Flexible and Rigid Foams Technical Options Committee (FTOC)
  • Halons Technical Options Committee (HTOC)
  • Medical Technical Options Committee (MTOC)
  • Methyl Bromide Technical Options Committee (MBTOC)
  • Refrigeration, Air-Conditioning and Heat Pumps Technical Options Committee (RTOC)
Other temporary subsidiary bodies (e.g. task forces) are established and dissolved according to the needs for specialized assessments as required by the Parties.

Publications by members of the Montreal Protocol Assessment Panels

Reducing abrupt climate change risk using the Montreal Protocol and other regulatory actions to complement cuts in CO2 emissions by Mario Molina, Durwood Zaelke, K. Madhava Sarma, Stephen O. Andersen, Veerabhadran Ramanathan and Donald Kaniaru

Nitrous Oxide (N2O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century by A. R. Ravishankara,* John S. Daniel, Robert W. Portmann

The Article in Science Magazine

Supporting Online Material

Summary of The United States Environmental Protection Agency press release recognizing Dr. Andersen, co-chair of the Technology and Economic Assessment Panel of the Montreal Protocol and Drs. Velders, Daniel, Fahey and McFarland, members of the Scientific Assessment Panel of the Montreal Protocol.These distinguished members of the Assessment Panels of the Montreal Protocol were recognized for their landmark paper: “The Importance of the Montreal Protocol in Protecting Climate,” published in the Proceedings of the National Academy of Sciences, 104 (12):4814-4819 (2007). This paper also earned the 2007 United Nations Environment Programme Award for the “Best New Paper on a Montreal Protocol Related Topic: Science Category.” (English only)

Progress & Quadrennial Assessment Reports

  • TEAP
  • SAP
  • EEAP
The Technology and Economic Assessment Panel (TEAP) provides, at the request of Parties, technical information related to the alternative technologies that have been investigated and employed to make it possible to virtually eliminate use of Ozone De...More on TEAP
  • TEAP
  • CTOC
  • FTOC
  • HTOC
  • MTOC
  • MBTOC
  • RTOC
  • PATF
  • OthTF
  • RTF
Progress Reports
Evaluation of 2013 Critical Use Nominations for Methyl Bromide and Related Matters - Final Report - 2013
TEAP September 2013 Decision XXIV/7 Task Force Report (vol. 2) - Final Report for MOP - 2013
Addendum to TEAP May 2013 Progress Report (Vol.1) - Additional Information for the Russian Federation Essential Use Nomination 2014 - 2013
TEAP May 2013 Decision XXIV/7 Task Force Report (volume 2) - 2013
TEAP May 2013 Decision XXIV/8 Task Force Report (volume 3) - 2013
TEAP Progress Report May 2013 - Volume 1 - 2013

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Quadrennial Assessment Reports
CTOC Assessment Report 2010
CTOC Assessment Report 2006
STOC Assessment Report 2002
STOC Assessment Report 1998
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Quadrennial Assessment Reports
FTOC Assessment Report 2010
2006 Assessment Report
2002 Assessment Report
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Quadrennial Assessment Reports
HTOC Assessment Report 2010
HTOC Assessment Report 2006
HTOC Assessment Report 2002
Progress Reports
Technical Note #1 – Revision 3: New Technology Halon Alternatives
Technical Note #2 – Revision 1: Halon Emission Reduction Strategies
Technical Note # 3 – Revision 1: Explosion Protection – Halon Use And Alternatives
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Quadrennial Assessment Reports
MTOC Assessment Report 2010
MTOC Assessment Report 2006
MTOC Assessment Report 2006 - Erratum
ATOC Assessment Report 2002
ATOC Assessment Report 1998
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Progress Reports
Draft Handbook on Critical Use Nominations for Methyl Bromide (ver 7.1 - April 2013)
Evaluations of 2007 Critical Use Nominations for Methyl Bromide and Related Matters - Corringedum
Evaluations of 2007 Critical Use Nominations for Methyl Bromide and Related Matters
Evaluations of 2005 Critical Use Nominations for Methyl Bromide and Related Matters
Quadrennial Assessment Reports
MBTOC Assessment Report 2010
MBTOC Assessment Report 2006
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Quadrennial Assessment Reports
RTOC Assessment Report 2010
RTOC Assessment Report 2006
RTOC Assessment Report 2002
RTOC Assessment Report 1998
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Progress Reports
PATF Report October 2004
Case Study #1: Use of CTC in the elimination of NCl3 in the Production of Chlorine and Caustic soda May 2001
Case Study #2: Use of CTC in the recovery of chlorine in gas from production of Chlorine
Use of CTC in the recovery of chlorine in gas from production of Chlorine May 2001
Case Study #4: Use of CTC in Endosulfan production May 2001
Case Study #5: Use and consumption of CTC in Ibuprofen production May 2001
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Progress Reports
TEAP Basic Domestic Needs Task Force October 2004
TEAP Chiller Task Force Report May 2004
HCFC Task Force Report May 2003
Report of the Task Force on Collection, Recovery and Storage April 2002
Report of the Task Force on Destruction Technologies April 2002
Report of the HFC and PFC Task Force October 1999
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Progress Reports
Addendum to the October 2011 Supplement to the Report on the Determination of the Funding Requirement for the Replenishment of the Multilateral Fund for the Triennium 2011-2014
TEAP Report - Supplement to the May 2011 TEAP Replenishment Report
TEAP Report - Assessment of the Funding Requirement for the Replenishment of the Multilateral Fund for the Period 2012-2014 May 2011 - 2011
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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 ...More on SAP

Quadrennial Assessment Reports
Scientific Assessment of Ozone Depletion: 2010 - 2011
Twenty Questions and Answers About the Ozone Layer: 2010 Update - 2011
Executive Summary of the Scientific Assessment of Ozone Depletion: 2010(WMO/UNEP) - 2010
Report of 2006 Assessment of the Scientific Assessment Panel - 2006
Executive Summary of the Scientific Assessment of Ozone Depletion: 2006 (WMO/UNEP), 18 August 2006 - 2006
Background document: Executive Summary, Scientific Assessment of Ozone Depletion: 2006 - 2006

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The Environmental Effects Assessment Panel assesses the various effects of ozone layer depletion. It consists of members who are scientists working in photobiology and photochemistry, mainly in universities and research institutes. The Panel members ...More on EEAP
Quadrennial Assessment Reports
Environmental effects of ozone depletion and its interactions with climate change: 2010 Assessment - 2011
Environmental Effects of Ozone Depletion: 2010 Assessment - Frequently Asked Questions (FAQs) - 2011
2006 Environmental Effects Assessment - Frequently Asked Questions ( FAQs) - 2006
Environmental Effects of Ozone Depletion and its interactions with Climate Change: 2006 Assessment - 2006
The 2002 Assessment of the Environmental Effects Assessment Panel - 2002
Progress Reports
Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2009 - 2009

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LIST OF MEMBERS

Environmental Effects Assessment Panel
Scientific Assessment Panel
Technology and Economic Assessment Panel
Chemicals Technical Options Committee
Flexible and Rigid Foams Technical Options Committee
Halons Technical Options Committee
Medical Technical Options Committee
Methyl Bromide Technical Options Committee
Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee
Replenishment Task Force (XXV/8)
Task Force on Decision XXV/5