Ozone layer could be restored in a few decades
January 10, 2023 - The success of a 1987 agreement to stop using chemicals that damage the ozone layer means it may recover in a few decades.
Restoration of the ozone layer is back on track after China largely eliminated emissions of the chlorofluorocarbon (CFC) trichlorofluoromethane (CFC-11).
A gaping hole in the ozone layer was discovered by scientists in 1985. Two years later, the Montreal Protocol was signed by 46 countries, promising to phase out harmful chemicals blamed for eating away at the ozone layer.
If current policies are adhered to, the ozone layer will be restored to pre-ozone hole values at different times:
2040: Globally, excluding Arctic and Antarctic
2045: Arctic Circle
It should be noted that although the depletion of the ozone is harmful – allows more ultraviolet radiation from the sun to reach the ground – it is not a major contributor to climate change.