Science and Diplomacy: Montreal Protocol on Substances that Deplete the Ozone Layer

TLDR: The Montreal Protocol on Substances that Deplete the Ozone layer (MONTAGE) as discussed by the authors was proposed by the United Nations Environment Programme to phase out the production and consumption of ozone depletion.

Abstract: The ozone layer forms a thin shield in the stratosphere, protecting life on Earth from harmful ultraviolet radiation. Emissions of ozonedepleting substances (ODS) used in many sectors (such as refrigeration, airconditioning, foams, and firefighting) destroy stratospheric ozone. Increased ultraviolet radiation from major depletion of stratospheric ozone can cause increases in skin cancer and cataracts, weaken the human immune systems, damage some agricultural crops, impact natural ecosystems, and degrade materials such as plastic. The Montreal Protocol on Substances that Deplete the Ozone Layer seeks worldwide phaseout of the production and consumption of ODS. Scientists confirmed that the protocol is working and that the ozone layer is on its way to recovery around the year 2050. Science and technology, including research at Antarctic stations proving that manufactured chemicals destroy stratospheric ozone and cause the Antarctic ozone hole, played important roles in the evolution and success of the protocol. Scientists provided early warning about the issue, discovered the Antarctic ozone hole, and linked it to CFC emissions and, along with nongovernmental organizations and the media, informed the public. The United Nations Environment Programme facilitated negotiations by governments. Science and technology panels of the protocol verified the performance of and facilitated periodical strengthening of the protocol. The scientific findings stimulated and motivated industry to innovation of alternatives to ODS. The protocol promoted universal participation, early action, continuous learning, and progressively tougher action. The protocol’s Multilateral Fund and its implementing agencies assisted developing countries through technology transfer, creation of national focal points and networks, training, and introduction of regulations and policies.