Articles | Volume 18, issue 5
Atmos. Chem. Phys., 18, 3369–3385, 2018
https://doi.org/10.5194/acp-18-3369-2018
Atmos. Chem. Phys., 18, 3369–3385, 2018
https://doi.org/10.5194/acp-18-3369-2018

Research article 08 Mar 2018

Research article | 08 Mar 2018

Evaluation of stratospheric age of air from CF4, C2F6, C3F8, CHF3, HFC-125, HFC-227ea and SF6; implications for the calculations of halocarbon lifetimes, fractional release factors and ozone depletion potentials

Emma Leedham Elvidge et al.

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Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Emma Elvidge on behalf of the Authors (18 Dec 2017)  Author's response    Manuscript
ED: Publish subject to technical corrections (04 Jan 2018) by Gabriele Stiller
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Short summary
Chemical species measured in stratospheric air can be used as proxies for stratospheric circulation changes which cannot be measured directly. A range of tracers is important to understand changing stratospheric dynamics. We demonstrate the suitability of PFCs and HFCs as tracers and support recent work that reduces the current stratospheric lifetime of SF6. Updates to policy-relevant parameters (e.g. stratospheric lifetime) linked to this change are provided for O3-depleting substances.
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