“Not so long ago, humanity stood on the brink of a self-inflicted catastrophe,” he recalled. “Our use of ozone-depleting substances such as chlorofluorocarbons (CFCs) had torn a hole in the ozone layer that protects us from the sun’s harmful ultraviolet radiation.
“But we tackled this challenge,” he reminded citizens of the world.
The scientific confirmation of the depletion of the ozone layer prompted the international community to establish a mechanism for cooperation to take action to protect the ozone layer.
This was formalized in the Vienna Convention for the Protection of the Ozone Layer, which was adopted and signed by 28 countries, on 22 March 1985. In September 1987, the Montreal Protocol on Substances that Deplete the Ozone Layer was drafted.
“Together, we have succeeded in putting the stratospheric ozone layer on the road to recovery by the middle of this century,” Mr. Ban said. “As a result, up to 2 million cases of skin cancer may be prevented each year, along with even more avoided cases of eye cataracts.”
Ahead of next week’s adoption in New York of the 2030 Agenda for Sustainable Development, and the effort by governments to forge a new, collective path forward on climate change later this year in Paris, the UN chief said the Montreal Protocol’s success should serve as inspiration.
Noting that the work of the Montreal Protocol is not yet done, the Secretary-General said hydrofluorocarbons (HFCs) that have been used as replacements for many ozone-depleting substances are extremely potent greenhouse gases and will contribute a great deal of warming to an already overheated planet in the coming decades “unless we act now.”
“Many countries are now considering using the Montreal Protocol regime to phase down HFCs,” Mr. Ban said. “A political commitment to managing HFCs under the Montreal Protocol could be one of the biggest climate change wins in the lead-up to the Paris climate conference.”
The UN Environment Programme (UNEP), which serves as the Ozone Secretariat, is marking the 30th anniversary of the Vienna Convention.
As part of the commemorative activities, the Ozone Secretariat is conducting the “Precious Ozone” digital campaign to celebrate the many successes achieved under the ozone protection regime over the past 30 years and highlight the importance of the ozone layer in protecting life on Earth from the harmful effects of UV radiation.
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