Unusual Ozone Hole Behavior Detected from 2020 to 2022

  • Posted on 14/09/2023

The opening and closing of the hole above Antarctica occur annually in a seasonal cycle. However, these openings and closures exhibit slight variations from year to year. Normally, the hole begins to open around September and October, reaches its maximum size in October, and closes in November or even December. Yet, over the past two years, there has been a noticeable delay in both the opening and closing of the hole. In 2022, it remained open until mid-December, achieving one of its largest areas since 1979. This remarkable change in behavior lacks a definitive explanation according to Copernicus, the climate monitoring organization.