Thursday, March 30, 2023

Ozone recovery well under way

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This Nasa illustration shows the ozone hole over Antarctica on October 5, 2022.

At the annual meeting of the American Meteorological Society in the US city of Denver on Monday, a UN-appointed panel of experts pointed out that the ozone layer is currently on track to recover within the coming decades. The decision to phase out many ozone-depleting substances also benefits climate protection.

If current trajectories are maintained, the ozone layer should recover to 1980 levels by about 2066 in Antarctica, 2045 in the Arctic, and 2040 in the rest of the world—that was before the ozone hole formed. In 1987, the UN agreed in the Montreal Protocol to end chlorofluorocarbons (CFCs) because they damage the ozone layer. This layer in the Earth’s atmosphere protects the Earth from the sun’s ultraviolet radiation.

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