The Montreal Protocol on Substances that Deplete the Ozone Layer

The Montreal Protocol on Substances that Deplete the Ozone Layer is a global agreement to protect the Earth’s ozone layer by phasing out the chemicals that deplete it. This phase-out plan includes both the production and consumption of ozone-depleting substances. The landmark agreement was signed in 1987 and entered into force in 1989.

The parties to the Protocol meet once a year to make decisions aimed at ensuring the successful implementation of the agreement. These include adjusting or amending the Protocol, which has been done six times since its creation. The most recent amendment, the Kigali Amendment, called for the phase-down of hydrofluorocarbons (HFCs) in 2016. These HFCs were used as replacements for a batch of ozone-depleting substances eliminated by the original Montreal Protocol. Although they do not deplete the ozone layer, they are known to be powerful greenhouse gases and, thus, contributors to climate change.

The Montreal Protocol provided a set of practical, actionable tasks that were universally agreed on. The Protocol has successfully met its objectives thus far and continues to safeguard the ozone layer today. Thanks to the collaborative effort of nations around the world, the ozone layer is well on its way to recovery.

Decision XXI/24: Difficulties faced by Timor-Leste as a new Party

Notes with appreciation Timor-Leste’s joining the international community in its efforts to protect the ozone layer, with its accession to the Vienna Convention, the Montreal Protocol and all its amendments, making the Vienna Convention and the Montreal Protocol the first international treaties deposited with the United Nations Secretary General to have universal participation,

Notes also that the ozone treaties will enter into force for Timor-Leste on 16 December 2009,

Recognizing the difficulties faced by Timor-Leste by joining the Vienna Convention and the Montreal Protocol and all its amendments shortly before key phase‑out dates,

Understanding Timor-Leste’s commitments for phasing out ozone-depleting substances under the Montreal Protocol and its amendments within a limited time frame,

  1. To urge all Parties to assist Timor-Leste, as a new Party, in controlling the export of ozone‑depleting substances and ozone-depleting substance‑based technologies into Timor‑Leste through the control of trade as per the provisions of the Montreal Protocol and relevant decisions of the Meeting of the Parties and to encourage Timor-Leste to participate in an informal prior informed consent process as referred to in decision XIX/12;
  2. To request the Executive Committee when considering project proposals for Timor‑Leste to phase out ozone-depleting substances to take into account the special situation of this new Party, which may face difficulties in the phase out of ozone-depleting substances in annexes A, B and E, and to be flexible in considering the project proposals, without prejudice to the possible review of the non-compliance situation of Timor-Leste by the Parties;
  3. To request the implementing agencies to provide appropriate assistance to Timor-Leste in institutional strengthening, capacity building, data collection, development of its country programme and national phase‑out plans and in continuing its efforts to report to the Secretariat next year, data on consumption of ozone-depleting substances in accordance with the Montreal Protocol requirements;
  4. To request the Implementation Committee to consider difficulties faced by Timor-Leste when addressing any possible non-compliance situations faced by Timor-Leste after the date on which the Protocol and its Amendments enter into force for Timor-Leste and report on the compliance situation of Timor-Leste to the Open-ended Working Group preceding the Twenty-Fourth Meeting of the Parties, during which the present decision will be reconsidered.