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 XXIII/21: Endorsement of a new co-chair of the Chemicals Technical Options Committee and a senior expert of the Technology and Economic Assessment Panel

  1. To thank Mr. Masaaki Yamabe (Japan) for his long and outstanding efforts on behalf of the Montreal Protocol on Substances that Deplete the Ozone Layer as co-chair of the Chemicals Technical Options Committee;
  2. To endorse Mr. Yamabe (Japan) as a senior expert of the Technology and Economic Assessment Panel for a term of four years, subject to re-endorsement by the parties in accordance with section 2.3 of the terms of reference of the Technology and Economic Assessment Panel;
  3. To endorse Mr. Keiichi Ohnishi (Japan), a member of the Chemicals Technical Options Committee, as a new co-chair of the Chemicals Technical Options Committee for a term of four years, subject to re-endorsement by the parties in accordance with section 2.3 of the terms of reference of the Technology and Economic Assessment Panel;