4 ways the ozone hole is linked to climate

To mark the peak of ozone hole season, we’re highlighting four ways that climate and the ozone hole are related—and one important way they aren’t. But before you read any further, please take a few moments to enjoy a gorgeous view of the night sky (and an aurora) over the South Pole captured by Patrick Cullis, a NOAA/CIRES scientist who was stationed there from 2008-2009. Antarctica's long months of polar darkness are a key ingredient to the making of the yearly ozone hole, but that doesn't diminish their unique beauty.

Antarctica is the only place on Earth where it's reliably cold enough for an ozone hole to form

The ozone hole is an annual thin spot that forms in the stratospheric ozone layer over Antarctica in mid-September and October. When it comes to the ozone hole, chlorine is the enemy. The chlorine comes from chlorofluorocarbons (CFCs, for short), which were widely used in early refrigeration and cooling systems. Under most atmospheric conditions, when CFCs begin to degrade, the chlorine they contain first gets incorporated into variety of smaller molecules that do not directly harm the ozone layer.

https://www.climate.gov/news-features/understanding-climate/4-ways-ozone-hole-linked-climate-and-1-way-it-isn%E2%80%99t