The ozone layer is showing signs of continuing recovery from man-made damage and is likely to heal fully by 2060, new evidence shows.
Phasing them out could avoid as much as 0.5C (0.9F) of warming this century.
Ozone in the upper layers of the atmosphere protects the earth’s surface from most of the harmful ultraviolet rays from the sun.
Without it, skin and eye damage can occur, and evidence suggests a rise in skin cancers associated with the thinning of the ozone layer.
“The Montreal protocol is one of the most successful multilateral agreements in history for a reason,” said Erik Solheim, head of UN Environment.
Durwood Zaelke, president of the Institute for Governance and Sustainable Development, said: “Over the last three decades, the Montreal protocol has fulfilled its original objective to heal the ozone layer.
The Chinese government has pledged to find and close down these sites. »