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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.

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Ref:  Oz.Sec/VCGTF Monitoring                                                                                            Date: 14 November 2024

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: annual progress update and invitation for contributions.

Kindly note that the translated versions of this letter in French and Spanish will be sent to the relevant parties in due course.

Yours sincerely, 

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Ozone Secretariat  

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

Ref:  Oz.Sec./State of Palestine                                                                                               Date:    15 October 2024

Sir/Madam,

I refer to item 4(o) on the provisional agenda of the preparatory segment of the combined thirteenth meeting of the Conference of the Parties to the Vienna Convention for the Protection of the Ozone Layer (COP13) and Thirty-Sixth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP36) (UNEP/OzL.Conv.13/1–UNEP/OzL.Pro.36/1) relating to the classification of the State of Palestine as a party operating under paragraph 1 of Article 5 of the Montreal Protocol and access to support from the Multilateral Fund. The item was added to the provisional agenda at the request of the State of Palestine (see the note by the Secretariat on issues for discussion by and information for the attention of COP13 and MOP36, UNEP/OzL.Conv.13/2–UNEP/OzL.Pro.36/2, paragraph 103 and Annex III).

In a message dated 13 October 2024, the State of Palestine asked for the postponement of the consideration of item 4(o) to MOP37.

At the time of the adoption of the agenda of the preparatory segment of COP13/MOP36, the Co-Chairs of the preparatory segment will inform the delegates of this development and suggest the inclusion of the item in the provisional agenda of the forty-seventh meeting of the Open-ended Working Group of the Parties to the Montreal Protocol that is scheduled to take place from 7 to 11 July 2025.  

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./Decision XXXV/3                                                                                            Date: 8 October 2024

Sir/Madam,

I have the honour to forward to you a communication from the Co-Chairs of the Scientific Assessment Panel under the Montreal Protocol, seeking nominations of scientific experts to participate in the next quadrennial assessment to be completed in 2026 for consideration by the parties to the Montreal Protocol in 2027.

We look forward to receiving your nominations. The nomination process is set out in the attached letter.

Please accept, Sir/Madam, the assurances of my highest consideration.

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Megumi Seki Nakamura
Executive Secretary
Ozone Secretariat

UN Environment Programme
P.O.Box 30552-00100
Nairobi, Kenya

Mobile phone: +245 733 637905
Land line direct: +245 20 7623452
Email: meg.seki@un.org
Website:  http://ozone.unep.org 

Dear Sir/Madam,

Please find attached the invitation for the combined thirteenth meeting of the Conference of the Parties to the Vienna Convention for the Protection of the Ozone Layer and the Thirty-Sixth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (28 October to 1 November 2024) and the workshop on life-cycle refrigerant management (27 October 2024) to be held in Bangkok.

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. The system already contains information on delegates who have attended previous Montreal Protocol meetings. Please update the existing information as necessary. Information will need to be entered for delegates 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
ozone.unep.org

Madame/Monsieur,

Veuillez trouver ci-joint l'invitation à la treizième réunion commune de la Conférence des Parties à la Convention de Vienne pour la protection de la couche d'ozone et à la trente-sixième réunion des Parties au Protocole de Montréal relatif à des substances qui appauvrissent la couche d'ozone (28 octobre au 1ernovembre 2024) et l'atelier sur la gestion du cycle de vie des réfrigérants (27 octobre 2024) qui se tiendra à Bangkok.

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 préférés pour le système d'inscription. Le guide étape par étape du système est disponible. Le système contient déjà des informations sur les délégués qui ont assisté aux réunions précédentes du Protocole de Montréal. Veuillez mettre à jour les informations existantes si nécessaire. Des informations devront être saisies pour les délégués qui n’ont pas assisté aux réunions précédentes. Veuillez-vous assurer de fournir une adresse e-mail valide pour chacun de vos représentants.

Cordialement,

Ozone Secretariat
mea-ozoneinfo@un.org
ozone.unep.org

Estimado Señor, Estimada Señora:

Se adjunta la invitación para la decimotercera reunión de la Conferencia de las Partes en el Convenio de Viena para la Protección de la Capa de Ozono y la Trigésima Sexta Reunión de las Partes en el Protocolo de Montreal relativo a las Sustancias que Agotan la Capa de Ozono (28 de octubre al 1o de noviembre de 2024), que se celebrarán de manera combinada, y el taller sobre gestión del ciclo de vida de los refrigerantes (27 de octubre de 2024) que se celebrarán en Bangkok.

Utilizando el enlace exclusivo para su delegación, registre a sus representantes en la reunión lo antes posible.

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. El sistema ya contiene información sobre los delegados que han asistido a reuniones anteriores del Protocolo de Montreal. Actualice la información existente según sea necesario. Será necesario ingresar información para 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,

Yours sincerely,

Ozone Secretariat
mea-ozoneinfo@un.org
ozone.unep.org

Primer for Members

This primer is intended to provide members of the Implementation Committee, especially new members, with a comprehensive understanding of the non-compliance procedure for the Montreal Protocol and the way in which the Committee has been operating since its establishment. In that regard, it is important to note that the non-compliance procedure adopted by the parties consists of only 16 paragraphs and that, like any entity, the Implementation Committee has developed a mode of efficient operation over time that, while firmly based on the non-compliance procedure, relies to a considerable extent on custom and precedent. For this reason, the primer refers to the requirements of the non-compliance procedure and, where necessary, explains the practice of the Committee, noting that such practice has evolved over time and will continue to do so. It is hoped that the primer will provide a basis for future advances in the timely and effective resolution of non-compliance cases while at the same time ensuring the consistent and transparent treatment of the issues by the Implementation Committee.

Cover page of A decrease in radiative forcing and equivalent effective chlorine from hydrochlorofluorocarbons

The Montreal Protocol and its successive amendments have been successful in curbing emissions of ozone-depleting substances and potent greenhouse gases via production/consumption controls. Here we show that the radiative forcing and equivalent effective chlorine from hydrochlorofluorocarbons has decreased from 61.75 mW m−2 and 321.69 ppt, respectively, since 2021, 5 years before the most recent projected decrease. This important milestone demonstrates the benefits of the Protocol for mitigating climate change and stratospheric ozone layer loss.