Antarctic Ozone Hole Shrinks Further in 2025

Recently, the US National Oceanic and Atmospheric Administration (NOAA) and NASA confirmed that the Antarctic ozone hole was the fifth smallest recorded since 1992, the year the Montreal Protocol began to take effect. This signals steady recovery of the ozone layer after decades of damage.

Key Observations

  • The Copernicus Atmosphere Monitoring Service reported that the 2025 ozone hole closed on 1 December, the earliest closure since 2019.
  • The average size during peak depletion (7 September-13 October) was 7.23 million square miles (18.71 million sq km).
  • This was about 30% smaller than the largest ozone hole observed in 2006.
  • The ozone hole began breaking ....
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