Why Is the Ozone Layer Depletion over Antarctica?

The Antarctic ozone hole is a thinning or depletion of ozone in the stratosphere over the Antarctic each spring. This damage occurs due to the presence of chlorine and bromine from ozone depleting substances in the stratosphere and the specific meteorological conditions over the Antarctic.

Why the ozone layer depletion is more in Antarctica?

Cold winter temperatures persisting into the spring enable the ozone depletion process, which is why the “hole” forms over Antarctica. ... In warmer temperatures fewer polar stratospheric clouds form and they don't persist as long, limiting the ozone-depletion process.

What is happening to the ozone layer over Antarctica?

The 2020 Antarctic ozone hole grew rapidly from mid-August and peaked at around 24.8 million square kilometres on 20 September 2020, spreading over most of the Antarctic continent. It was the longest-lasting and one of the largest and deepest holes since the ozone layer monitoring began 40 years ago.