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A study published in the journal Nature has found that smoke from the 2019-20 Black Summer bushfires temporarily depleted the ozone layer by 3% to 5% in 2020. Particles in bushfire smoke can activate molecules that destroy the ozone layer, according to research that suggests future ozone recovery may be delayed by increasingly intense and frequent fires.
Smoke from the 2019-20 bushfires, which circulated around the globe, was ejected into the stratosphere, the second layer in Earth’s atmosphere, by a pyrocumulonimbus cloud.
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