Apparently, a volcano eruption. The last paragraph of this section states:
In September 2023, the Antarctic ozone hole was one of the largest on record, at 26 million square kilometers. The anomalously large ozone loss may have been a result of the Hunga Tonga–Hunga Haʻapai eruption.
Apparently, a volcano eruption. The last paragraph of this section states:
The eruption was in 2022 though, so what caused the hole to increase so dramatically from 2019 to 2020?