
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.
The year 2025 marks the fortieth anniversary of the signing of the Vienna Convention in 1985 and the fiftieth anniversary of the 1975 WMO statement “Modification of the ozone layer due to human activities and some possible geophysical consequences". Prepared by a group of international experts, this declaration recognized the potential danger of damage to the ozone layer and called for an intensive programme of research and observations to be carried out under the leadership of WMO.
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
Free trade zones (FTZ) and trans-shipment operations are trade facilitation mechanisms designed to enhance efficiency of trade and attract investment. Permitted operations within FTZ, including trans-shipment, which can involve repackaging, relabelling, reloading, assembling and manufacturing goods, combined with more relaxed procedures and limited oversight, can also open doors for fraudulent activities. This is particularly concerning for trade in environmentally sensitive commodities such as wildlife and timber products, hazardous chemicals and waste including e-waste or plastic waste, which are governed by legally binding provisions of different multilateral environmental agreements (MEAs), and related national laws.
The Atmospheric Chemistry Experiment–Fourier Transform Spectrometer (ACE-FTS) on SCISAT-1 and Microwave Limb Sounder (MLS) on NASA’s Aura satellite have contributed significantly to understanding the impacts of human activities on the stratospheric ozone layer.
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
"The views of the authors presented in the scientific papers are their own. They do not represent the views or policy of the Ozone Secretariat or the Parties to the Vienna Convention and the Montreal Protocol. No official endorsement should be inferred. The Ozone Secretariat does not make any warranty or representation, either express or implied, with respect to the accuracy of the information contained therein and it does not assume any liability of any kind resulting from the use or reliance upon any information contained in those papers including links to websites".