Decision XXXVII/1: Enhancing regional atmospheric monitoring of substances controlled by the Montreal Protocol on Substances that Deplete the Ozone Layer

The Thirty-Seventh Meeting of the Parties decides:

1. To request the Ozone Secretariat, in consultation with the Advisory Committee of the General Trust Fund for Financing Activities on Research and Systematic Observations Relevant to the Vienna Convention for the Protection of the Ozone Layer, to continue the evaluation of the suitability of potential sites for monitoring emissions of controlled substances situated within the regions and locations identified in the information provided by the Advisory Committee to the Thirty-Seventh Meeting of the Parties to the Montreal Protocol on Substances the Deplete the Ozone Layer, and with the voluntary participation of and in consultation with the concerned parties;
2. To also request the Ozone Secretariat to prepare, in consultation with the concerned parties that have expressed interest, for possible next steps towards establishing monitoring activities at those sites, taking into account the prioritization presented by the Advisory Committee at the Thirty-Seventh Meeting of the Parties and the phased approach presented in document UNEP/OzL.Pro.37/2/Add.1;
3. To further request the Ozone Secretariat to carry out these activities with a 2026 budget line item of 100,000 United States dollars from the cash balance of the Trust Fund for the Montreal Protocol, on an exceptional basis;
4. To request the Ozone Secretariat to report to the Open-ended Working Group of the Parties to the Montreal Protocol at its forty-eighth meeting and to the Thirty-Eighth Meeting of the Parties to the Montreal Protocol on progress in and any outcomes of those activities, for consideration by the parties;
5. To request the Executive Committee of the Multilateral Fund for the Implementation of the Montreal Protocol to take into consideration the information, including on the phased approach and the estimated costs, related to establishing and operating atmospheric monitoring stations as outlined in the above-mentioned document^[1] when developing guidelines and considering a funding window to support pilot projects, and to provide an update to the parties on the progress made ahead of the Thirty-Eighth Meeting of the Parties.

^[1] UNEP/OzL.Pro.37/2/Add.1, which cross-references document UNEP/OzL.Pro.37/INF/6.