Record-breaking aerosol levels explained by smoke injection into the stratosphere

Author:

Hirsch Eitan1ORCID,Koren Ilan2ORCID

Affiliation:

1. Environmental Sciences Division, Israel Institute for Biological Research, Nes-Ziona 7404801, Israel.

2. Department of Earth and Planetary Sciences, Weizmann Institute, Rehovot 76100, Israel.

Abstract

Smoke alarm Intense, widespread bushfires in Australia injected huge amounts of smoke into the stratosphere in 2020. Hirsch and Koren found that this smoke caused record-breaking levels of aerosols over the Southern Hemisphere, as much as that from a moderate volcanic eruption. The severity was caused by a combination of the vigor of the fires and their location at a latitude with a shallow tropopause and within the midlatitude cyclones belt. This aerosol increase caused considerable cooling over oceanic cloud-free areas. Science , this issue p. 1269

Funder

H2020 European Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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