Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 2: Impacts on ozone

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Abstract ∼ ∼ 0.5  DU in the annual mean in the tropics. The largest ozone reductions were simulated in the Arctic in the springs of 2011 and 2020. During the recent cold Arctic winter of 2019/20 Cl-VSLS resulted in local ozone reductions of up to ∼ 7  % in the lower stratosphere and of ∼ 7  DU in total column ozone by the end of March. ∼ 20  %, suggesting a potential role of the dynamical feedback from Cl-VSLS-induced chemical ozone loss. Finally, we calculate the ozone depletion potential of dichloromethane, the most abundant Cl-VSLS, at 0.0107. Our results illustrate a so-far modest but nonetheless non-negligible role of Cl-VSLS in contributing to the stratospheric ozone budget over the recent past that if continues could offset some of the gains achieved by the Montreal Protocol.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 2: Impacts on ozone ; volume:23 ; number:21 ; year:2023 ; pages:13701-13711 ; extent:11
Atmospheric chemistry and physics ; 23, Heft 21 (2023), 13701-13711 (gesamt 11)

Creator: Bednarz, Ewa M.
Hossaini, Ryan
Chipperfield, Martyn

DOI: 10.5194/acp-23-13701-2023

URN: urn:nbn:de:101:1-2023110903293077436266

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 14.08.2025, 10:52 AM CEST

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Bednarz, Ewa M.
Hossaini, Ryan
Chipperfield, Martyn

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