Ozone over the Arctic hits a record low | Science News

Описание: NASA satellites tracked how much ozone was in the stratosphere over the North Pole from November 2019 to April 4, 2020. Areas with the least amount of ozone appear blue and purple, while those with the most appear yellow and red. In mid-February, a strong polar vortex trapped very cold air around the pole, allowing high-altitude clouds to form in the stratosphere. In those clouds, refrigerant gases reacted with sunlight to release ozone-destroying chlorine and bromine. By early April, an ozone hole bigger than any previously measured had opened over the Arctic.

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Video: NASA Ozone Watch