The Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol on Substances that Deplete the Ozone Layer logo was developed to provide a distinct brand for the two treaties across various communication assets and applications. The visual identity guideline is designed to provide a comprehensive overview of applications and correct use of the logo.
Mass Communication Repository
Ref: Oz.Sec/OEWG48 Date: 19 August 2026
Dear Sir/Madam,
I would like to take this opportunity to remind parties of the following resources and documents presented during the forty-eighth meeting of the Open-ended Working Group of the Parties to the Montreal Protocol (OEWG48) on which the Ozone Secretariat would be grateful to receive inputs by the deadlines indicated below:
1. Online costing tool for monitoring stations
The Ozone Secretariat has developed an online interactive tool to enable parties to estimate the costs for the establishment and operation of monitoring stations, taking into account their national circumstances. The tool can be accessed through this link:
https://tinyurl.com/OzoneATMTool
Parties are kindly invited to test the current version of the tool and provide comments and suggestions to the Ozone Secretariat, by 31 August 2026 to support the preparation of a final version to be launched at the Thirty-Eighth Meeting of the Parties (MOP38) later this year.
2. Questions relating to ensuring the viability of Montreal Protocol operations
Under the agenda item on ensuring the viability of Montreal Protocol operations, the Secretariat had compiled a list of questions formulated by participants during the contact group discussion. The Working Group agreed to invite parties to submit their additional questions by 31 August 2026. The list of questions formulated by parties at OEWG48, together with any additional questions to be received from parties by
31 August 2026, will be the basis of the supplementary report to be prepared by the Secretariat for MOP38.
3. Practical guide on transboundary movements of Montreal Protocol controlled substances and related equipment
The Ozone Secretariat, in collaboration with the secretariat of the Basel, Rotterdam and Stockholm conventions and the Multilateral Fund secretariat, had prepared a practical guide on transboundary movements of controlled substances and the equipment containing them. A draft version of the guide was posted on the OEWG48 meeting portal for review and use by parties under the pre-session documents tab. Comments received by 31 August 2026 will be taken into account in the next iteration of the guide.
4. Briefing note on KA@10 and case studies
As indicated by the representative of Rwanda at OEWG48, a concise briefing note being prepared by the Secretariat, outlining the achievements, challenges and future opportunities associated with the Kigali Amendment is available on the dedicated website for the 10th anniversary of the Kigali Amendment as well as the MOP38 meeting portal of the Secretariat’s website. The Secretariat would be grateful to receive comments on this briefing note by 11 September 2026.
In addition, as part of the briefing note and separately we would like to feature case studies on successful and innovative actions and activities to implement the Kigali Amendment. Parties and other stakeholders are invited to submit case studies. If helpful, the format of the case studies presented in the annex to the draft briefing note may be used. Please send the case studies by 11 September as well.
Comments, inputs, suggestions and questions on any of these tools and documents may be sent by e-mail (mea-ozoneinfo@un.org).
I look forward to hearing from you on these various tools and documents and thank you for your support to the preparations for MOP38.
====
Megumi Seki Nakamura
Executive Secretary
Ozone Secretariat
UN Environment Programme
P.O.Box 30552-00100
Nairobi, Kenya
Telephone: +254 20 762 3452
Email: meg.seki@un.org
Website: http://ozone.unep.org
Mass Communication Repository
Dear Sir/Madam,
Please find attached the invitation for the Thirty-Eighth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer to be held from 2 to 6 November 2026.
Please note that Firefox and Chrome are the preferred browsers for the registration system. The step-by-step guide on the system is available here. The system already contains information on participants who have attended previous meetings of the Vienna Convention and the Montreal Protocol. Please update the existing information as necessary. Information will need to be entered into for representatives who have not attended past meetings. Please ensure that you provide a valid email address for each of your representatives.
Yours sincerely,
Ozone Secretariat
mea-ozoneinfo@un.org
https://ozone.unep.org
Mass Communication Repository
Madame/Monsieur,
Veuillez trouver ci-joint l’invitation à la Trente-huitième Réunion des Parties au Protocole de Montréal relatif à des substances qui appauvrissent la couche d’ozone, qui se tiendra du 2 au 6 novembre 2026.
Veuillez noter que Firefox et Chrome sont les navigateurs privilégiés pour le système d'inscription. Le guide détaillé sur l’utilisation du système est disponible ici. Le système contient déjà des informations sur les délégués ayant assisté aux réunions précédentes de la Convention de Vienne et du Protocole de Montréal. Merci de mettre à jour ces informations si nécessaire. Pour les délégués qui n’ont pas assisté aux réunions précédentes, veuillez saisir leurs informations. Il est important de fournir un courrier électronique valide pour chacun de vos représentant(e)s.
Cordialement,
Secrétariat de l'ozone
mea-ozoneinfo@un.org
https://ozone.unep.org
Mass Communication Repository
Estimado Señor/Estimada Señora:
Se adjunta la invitación para la 38ª reunión de las Partes en el Protocolo de Montreal relativo a las sustancias que agotan la capa de ozono, que se celebrará del 2 al 6 de noviembre de 2026.
Tenga en cuenta que Firefox y Chrome son los navegadores preferidos para el sistema de registro. La guía paso a paso sobre el uso del sistema está disponible aquí. El sistema ya contiene información sobre los delegados que han asistido a reuniones anteriores del Convenio de Viena y del Protocolo de Montreal. Actualice la información existente de ser necesario. Se deberá ingresar la información de los delegados que no hayan asistido a reuniones anteriores. Asegúrese de proporcionar una dirección de correo electrónico válida para cada uno de sus representantes.
Atentamente,
Secretaría del Ozono
mea-ozoneinfo@un.org
https://ozone.unep.org
Mass Communication Repository
Ref: Oz.Sec/VCGTF/Research and Monitoring Date: 12 June 2026
Sir/Madam,
The Ozone Secretariat is pleased to attach herein, for your kind attention, a letter from the Executive Secretary on the General Trust Fund for Financing Activities on Research and Systematic Observations Relevant to the Vienna Convention: Call for project proposals.
Kindly note that the translated versions of this letter in French and Spanish will be sent to the relevant parties in due course.
Please accept, Sir/Madam, the assurances of my highest consideration.
====
Ozone Secretariat
UN Environment Programme
P.O. Box 30552 (00100)
Nairobi, Kenya
Telephone: +254 20 762 3611
Email: mea-ozoneinfo@un.org
Website: http://ozone.unep.org
Mass Communication Repository
Ref: Oz.Sec/WOD 2026 Date: 30 March 2026
Dear Article 5 parties to the Montreal Protocol,
I am pleased to inform you that this year’s World Ozone Day theme will be:
GLOBAL ACTION FOR A COOLER PLANET
Celebrating 10 years of sustainable cooling under the Kigali Amendment to the Montreal Protocol
Once the posters, social media, videos and other assets have been finalised, they will be made available on the WOD2026 designated website, and the parties will be informed accordingly.
As in previous years, the Secretariat is pleased to provide limited financial assistance to a few selected Article 5 parties to contribute towards organising their national activities to commemorate the day.
The revised United Nations Environment Programme partnership policy may require additional documentation and assessments from partners we will engage with for WOD2026. In anticipation of the possible longer timeframe for the necessary agreements to be put in place to enable disbursement of funds to the partners selected for financial assistance, I am writing to you earlier than usual.
Interested parties are invited to submit their plans of celebration activities, including a planned budget, and requests for assistance no later than Friday, 24 April 2026. Kindly send them to stephanie.haysmith@un.org with a copy to the Secretariat at mea-ozoneinfo@un.org
The few selected parties will be notified within a week of the closing date with information on the required documentation under the partnership policy and submission deadlines.
Yours sincerely,
====
Megumi Seki Nakamura
Executive Secretary
Ozone Secretariat
UN Environment Programme
P.O.Box 30552-00100
Nairobi, Kenya
Telephone: +254 20 762 3452
Email: meg.seki@un.org
Website: http://ozone.unep.or
Dear Sir/Madam,
Please find attached the invitation for the forty-eighth meeting of the Open-ended Working Group to the Montreal Protocol on Substances that Deplete the Ozone Layer (OEWG48) and the Sixth Extraordinary Meeting of the Parties to the Montreal Protocol (ExMOP6). OEWG48 will be held from 13 to 17 July and ExMOP6 will be held on 14 July 2026.
Please note that Firefox and Chrome are the preferred browsers for the registration system. The step-by-step guide on the system is available here. The system already contains information on participants who have attended previous meetings of the Vienna Convention and the Montreal Protocol. Please update the existing information as necessary. Information will need to be entered into for representatives who have not attended past meetings. Please ensure that you provide a valid email address for each of your representatives.
Yours sincerely,
Ozone Secretariat
Madame/Monsieur,
Veuillez trouver ci-joint l’invitation à la quarante-huitième réunion du Groupe de travail à composition non limitée au Protocole de Montréal relatif à des substances qui appauvrissent la couche d’ozone (OEWG48), et à la Sixième réunion extraordinaire des Parties au Protocole de Montréal (ExMOP6). La quarante-huitième réunion du Groupe de travail se déroulera du 13 au 17 juillet 2026, et la Sixième réunion extraordinaire des Parties aura lieu le 14 juillet 2026.
Veuillez noter que Firefox et Chrome sont les navigateurs privilégiés pour le système d'inscription. Le guide détaillé sur l’utilisation du système est disponible ici. Le système contient déjà des informations sur les délégués ayant assisté aux réunions précédentes de la Convention de Vienne et du Protocole de Montréal. Merci de mettre à jour ces informations si nécessaire. Pour les délégués qui n’ont pas assisté aux réunions précédentes, veuillez saisir leurs informations. Il est important de fournir un courrier électronique valide pour chacun de vos représentant(e)s.
Cordialement,
Secrétariat de l'ozone
mea-ozoneinfo@un.org
https://ozone.unep.org
Estimado Señor/Estimada Señora:
Se adjunta la invitación para la 48ª reunión del Grupo de Trabajo de composición abierta del Protocolo de Montreal relativo a las Sustancias que Agotan la Capa de Ozono (OEWG48) y la Sexta Reunión Extraordinaria de las Partes en el Protocolo de Montreal (ExMOP6). La 48ª reunión del Grupo de Trabajo de composición abierta se celebrará del 13 al 17 de julio de 2026, y la Sexta Reunión Extraordinaria de las Partes tendra lugar el 14 de julio de 2026.
Tenga en cuenta que Firefox y Chrome son los navegadores preferidos para el sistema de registro. La guía paso a paso sobre el uso del sistema está disponible aquí. El sistema ya contiene información sobre los delegados que han asistido a reuniones anteriores del Convenio de Viena y del Protocolo de Montreal. Actualice la información existente de ser necesario. Se deberá ingresar la información de los delegados que no hayan asistido a reuniones anteriores. Asegúrese de proporcionar una dirección de correo electrónico válida para cada uno de sus representantes.
Atentamente,
Secretaría del Ozono
mea-ozoneinfo@un.org
https://ozone.unep.org
Mass Communication Repository
Ref: Oz.Sec/MOP37/Decisiones Fecha: 6 de febrero de 2026
Estimado/a Señor/a:
La Secretaría del Ozono se complace en transmitir, para su atención, la carta adjunta de la Secretaria Ejecutiva, sobre las decisiones adoptadas por la 37ª Reunión de las Partes en el Protocolo de Montreal relativo a las Sustancias que Agotan la Capa de Ozono.
La versión en inglés de la misma carta fue enviada a todas las partes el 16 de enero de 2026.
Atentamente,
Secretaría del Ozono
Programa de las Naciones Unidas para el Medio Ambiente
P.O. Box 30552 (00100)
Nairobi, Kenya
Telephone: +254 20 762 3611
Email: mea-ozoneinfo@un.org
Website: http://ozone.unep.org