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Dear Sir/Madam,

Please find attached the invitation for the Thirty-Seventh Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (3 to 7 November 2025) and the informal meeting of the parties on facilitating the implementation of the Montreal Protocol (2 November 2025), to be held in Nairobi.

The step-by-step guide on the use of the registration 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. The email address entered in the system will be used to dispatch registration notification and the meeting pass, with the unique QR code, to the representative.

Yours sincerely,
Ozone Secretariat
mea-ozoneinfo@un.org
https://ozone.unep.org

Madame/Monsieur,

Veuillez trouver ci-joint l'invitation à la Trente-septième réunion des Parties au Protocole de Montréal relatif à des substances qui appauvrissent la couche d'ozone (du 3 au 7 novembre 2025) et la réunion informelle sur la facilitation de la mise en œuvre du Protocole de Montréal (le 2 novembre 2025) qui se tiendra à Nairobi.

Le guide détaillé sur l’utilisation du système d'enregistrement 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 représentants. Le courrier électronique saisie dans le système sera utilisée pour envoyer la notification d'inscription et le laisser-passer de réunion, avec le code QR unique au représentant.

Cordialement,
Secrétariat de l'ozone
mea-ozoneinfo@un.org
https://ozone.unep.org

Estimado Señor/Estimada Señora:

Se adjunta la 37ª reunión de las partes en el Protocolo de Montreal relativo a las sustancias que agotan la capa de ozono (del 3 al 7 de noviembre de 2025), y la reunión informal sobre la facilitación de la aplicación del Protocolo de Montreal (2 de noviembre de 2025) que se celebrará en Nairobi.

La guía paso a paso sobre el uso del sistema de registro está disponible haciendo clic aquí. El sistema ya contiene información sobre los delegados que han asistido a reuniones anteriores del Convenio de Viena y del Protocolo de Montreal. Por favor actualice la información existente de ser necesario. Se deberá ingresar la información de los delegados que no hayan asistido a reuniones anteriores. Por favor asegúrese de proporcionar una dirección de correo electrónico válida para cada uno de sus representantes. El correo electrónico ingresada en el sistema se utilizará para enviar la notificación de registro y el pase de reunión, con el código QR único al representante.

Atentamente,
Secretaría del Ozono
mea-ozoneinfo@un.org
https://ozone.unep.org

Ref: Oz.Sec./2025/Decision XXXVI/2/LRM                                                                      Date: 7 April 2025

Dear Sir/Madam,

The Ozone Secretariat is pleased to transmit, for your kind attention, the attached letter from the Executive Secretary, with regard to decision XXXVI/2 on Information on Life-Cycle Refrigerant Management. Please note that this decision has already been shared through a letter that was sent to all parties on 20 December 2024.

Yours sincerely, 

Ozone Secretariat  

UN Environment Programme
P.O. Box 30552 (00100)
Nairobi, Kenya
Telephone: +254 20 762 3611
mea-ozoneinfo@un.org
http://ozone.unep.org

Dear Sir/Madam,

Please find attached the invitation for the forty-seventh meeting of the Open-ended Working Group of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (OEWG47) to be held in Bangkok from 7 to 11 July 2025.

Using the exclusive link provided for your delegation, please register your representatives to the meeting as soon as possible.

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

Madame/Monsieur,

Veuillez trouver ci-joint l'invitation à la quarante-septième réunion du Groupe de travail à composition non limitée des Parties au Protocole de Montréal relatif à des substances qui appauvrissent la couche d'ozone (OEWG47) qui se tiendra à Bangkok du 7 au 11 juillet 2025.

En utilisant le lien exclusif fourni pour votre délégation, veuillez inscrire vos représentants à la réunion dès que possible.

Veuillez noter que Firefox et Chrome sont les navigateurs recommandés 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 une adresse e-mail valide pour chacun de vos représentants.

Cordialement,

Secrétariat de l'ozone
mea-ozoneinfo@un.org
https://ozone.unep.org

Estimado/a Señor/a,

Se adjunta la invitación para la 47ª reunión del Grupo de Trabajo de composición abierta de las Partes en el Protocolo de Montreal relativo a las Sustancias que Agotan la Capa de Ozono (OEWG47) que se celebrará en Bangkok del 7 al 11 de julio de 2025.

Utilizando el enlace exclusivo que se proporciona para su delegación, por favor registre a sus representantes en la reunión lo antes posible.

Por favor tenga en cuenta que Firefox y Chrome son los navegadores preferidos para el sistema de registro. La guía paso a paso del sistema está disponible haciendo clic aquí. El sistema ya contiene información sobre los delegados que han asistido a reuniones anteriores del Convenio de Viena y del Protocolo de Montreal. Por favor actualice la información existente de ser necesario. Se deberá ingresar la información de los delegados que no hayan asistido a reuniones anteriores. Por favor 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

Ref:  Oz.Sec/Decision XXXVI/4                                                                                            Date: 6 February 2025

Dear Sir/Madam,

I would like to remind you of decision XXXVI/4 on additional information on very short-lived substances (VSLS) adopted by the Thirty-Sixth Meeting of the Parties to the Montreal Protocol (MOP36), specifically of paragraphs 2 and 3 regarding information on national measures concerning use and/or emissions of VSLS. The requests in these paragraphs, together with other actionable parts of the decisions adopted during the combined thirteenth meeting of the Conference of the Parties to the Vienna Convention and MOP36, were communicated to all parties in a letter dated 20 December 2024.

In paragraph 2 of that decision, parties that have national measures concerning use and/or emissions of VSLS were invited to provide the Ozone Secretariat with information on those measures, on a voluntary basis, by 31 March 2025. Based on the information received from parties in accordance with this request, and in response to paragraph 3 of the same decision, the Ozone Secretariat will provide a compendium of national measures to be made available on its website.

If the aforementioned measures are in place in your country, the Secretariat would appreciate receiving information on those measures from your Government for inclusion in the requested compendium. Please communicate your response by email to Sophia Mylona (sophia.mylona@un.org) with a copy to MEA-ozoneinfo@un.org preferably before 31 March 2025.

We look forward to continuing our collaboration with your Government to implement the provisions of the Montreal Protocol.

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.org

Ref:  Oz.Sec/MOP37                                                                                            Date: 5 February 2025

Dear Sir/Madam,

Attached, for your kind attention, is a letter from the Executive Secretary on the dates and venue for the Thirty-Seventh Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP37).

Yours sincerely, 

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

Ref: Oz.Sec./Decision XXXVI/9/Illegal trade and licensing systems                                         Date: 24 January 2025

Dear Sir/Madam,

The Ozone Secretariat is pleased to transmit, for your kind attention, a letter from the Executive Secretary, with regard to decision XXXVI/9 on further strengthening Montreal Protocol institutions adopted at the Thirty-Sixth Meeting of the Parties to the Montreal Protocol (MOP36), specifically to paragraphs 1 to 4 concerning the prevention of illegal trade in controlled substances and licensing systems.

Yours sincerely, 

Ozone Secretariat  

UN Environment Programme
P.O. Box 30552 (00100)
Nairobi, Kenya
Telephone: +254 20 762 3611
mea-ozoneinfo@un.org
http://ozone.unep.org