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Australia s Black Summer bushfires acted like a volcanic eruption, slightly cooling the globe We’re sorry, this service is currently unavailable. Please try again later. Dismiss Australia s Black Summer bushfires acted like a volcanic eruption, slightly cooling the globe By Maddie Stone Normal text size Advertisement Australia s disastrous 2019-2020 Black Summer bushfire season blew so much smoke into the upper atmosphere that it blocked sunlight from reaching Earth s surface, potentially causing a brief global cooling effect comparable to a moderate volcanic eruption, new research has found. In late 2019 and early 2020, raging bushfires in south-east Australia spawned a rash of rare fire-induced thunderclouds, known as pyrocumulonimbus clouds, or pyroCbs. This pyroCb super outbreak , as scientists are now calling it, injected plumes of smoke into the stratosphere, a layer of the atmosphere that starts about nine miles overhead. There, the smoke plumes spun up their own

Port macquarieNew south walesUnited kingdomUnited statesNaval research laboratoryDistrict of columbiaGospers mountainPasquale sellittoInstitut pierre simon laplaceSergey khaykinMike frommDavid petersonLaura thapaNick moirUniversity of california at los angelesLaboratory of atmospheric research