About
Despite phasing out 98% of ozone depleting substances worldwide relative to a 1990 baseline and making major inroads in avoiding catastrophic climate change, parties grappled with recent scientific findings, whether and how to build on the Protocol’s success to tackle other environmental issues, and delivering on the Kigali commitments.
Final report
Summary report 31 October – 4 November 2022
All coverage
Thirty-five years ago, the adoption of the Montreal Protocol on Substances that Deplete the Ozone Layer marked a turning point in environmental history. When scientists discovered that man-made chemicals used in aerosol sprays and coolants were depleting the earth’s protective ozone layer, potentially exposing millions to dangerous ultraviolet radiation, governments took action.
On 16 September 1987, governments adopted the Montreal Protocol to control and reduce ozone-depleting substances, mainly chlorofluorocarbons (CFCs) and halons. The Protocol came into effect in 1989. By 2008, it was the first and only United Nations environmental agreement to have universal ratification. Over the years, more ozone-depleting substances have been phased out and the ozone layer is healing. Yet there is more work to be done.
When delegates to the Thirty-Fourth Meeting of the Montreal Protocol (MOP34) convened in late October, they had a full agenda, with work ranging from technical issues related to the Convention’s work to protect the ozone layer from harmful substances to essential budgetary matters. MOP34 built on the deliberations of the Forty-Fourth Meeting of the Open-ended Working Group (OEWG44), which was held in July 2022.
Parties tackled a lengthy list of substantive issues, including, but not limited to, work on:
- energy efficiency;
- identification of gaps in global coverage of atmospheric monitoring of controlled substances;
- ongoing emissions of carbon tetrachloride;
- the future availability of halons and their alternatives;
- implementation of the Kigali Amendment to phase down hydrofluorocarbons; and
- institutional processes to strengthen the effective implementation and enforcement of the Montreal Protocol.
During the preparatory segment (31 October -2 November), delegates addressed crucial administrative matters, including the 2023 budget of the Montreal Protocol and the financial reports for the trust funds for the Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol. Parties also considered the membership of key bodies, including: the Implementation Committee, which receives, considers, and reports on issues of non-compliance with the Montreal Protocol; the Executive Committee of the Multilateral Fund, which oversees the operation of the Fund; and the Co-Chairs of the OEWG, which prepares for the MOP.
During the high-level segment (3-4 November), the Co-Chairs of the three assessment panels reported on their work and highlight any key issues from their quadrennial assessments to be completed by the end of 2022. The assessment panels, which include the Technology and Economic Assessment Panel, the Scientific Assessment Panel, and the Environmental Effects Assessment Panel, provided scientific, technological and financial information to help parties take decisions about ozone layer protection.
Additionally, delegates heard a presentation by the Chair of the Executive Committee of the Multilateral Fund, the Multilateral Fund Secretariat, and the Fund’s implementation agencies. Heads of delegations made statements and delegates considered decisions recommended for adoption.
MOP34 was held at the International Civil Aviation Organization Conference Centre in Montreal, Canada, 31 October – 4 November 2022.
View past and future events
Past event
Vienna Convention COP 5 and Montreal Protocol MOP 11
Past event
20th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 12
Past event
Montreal Protocol MOP 13
Past event
22nd Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Vienna Convention COP 6 and Montreal Protocol MOP 14
Past event
Montreal Protocol MOP 15
Past event
1st Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP-1)
Past event
Montreal Protocol MOP 16
Past event
25th Meeting of the Open-ended Working Group of the Parties and 2nd Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP-2)
Past event
Vienna Convention COP 7 and Montreal Protocol MOP 17
Past event
26th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 18
Past event
Montreal Protocol MOP 19
Past event
Viena Convention COP 8 and Montreal Protocol MOP 20
Past event
29th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 21
Past event
Montreal Protocol MOP 22
Past event
31st Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Vienna Convention COP 9 and Montreal Protocol MOP 23
Past event
32nd Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 24
Past event
33rd Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 25
Past event
34th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Vienna Convention COP 10 and Montreal Protocol MOP 26
Past event
Workshop on Hydrofluorocarbon Management and 35th Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol
Past event
36th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Resumed 36th Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol
Past event
Montreal Protocol MOP 27
Past event
37th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
3rd Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP 3) and Associated Meetings
Past event
Montreal Protocol MOP 28
Past event
39th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol
Past event
Vienna Convention COP 11 and Montreal Protocol MOP 29
Past event
Workshop on Energy Efficiency Opportunities While Phasing-Down Hydrofluorocarbons (HFCs) and 40th Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer
Past event
30th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer
Past event
41st Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (OEWG 41)
Past event
31st Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP 31)
Past event
42nd Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (OEWG 42)
Past event
12th Meeting of the Conference of the Parties to the Vienna Convention (Part I) and 32nd Meeting of the Parties to the Montreal Protocol
Past event
4th Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP-4) and 1st Part of the 43rd Meeting of the Open-ended Working Group (OEWG43)
Past event
2nd Part of the 43rd Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol (OEWG 43)
Past event
Combined 12th Meeting of the Conference of the Parties to the Vienna Convention (Part II) and 33rd Meeting of the Parties to the Montreal Protocol
Past event
44th Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol (OEWG-44) and 5th Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP-5)
Past event
34th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP34)
Past event
45th Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol
Past event
35th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP35)
Past event
46th Meeting of the Open-ended Working Group of the Parties to the Montreal Protocol
Past event
13th Meeting of the Conference of the Parties to the Vienna Convention for the Protection of the Ozone Layer (COP13) and 36th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP36)
To receive free coverage of global environmental events delivered to your inbox, subscribe to the ENB Update newsletter.
