Articles | Volume 18, issue 12
Atmos. Chem. Phys., 18, 8647–8666, 2018
https://doi.org/10.5194/acp-18-8647-2018

Special issue: Quadrennial Ozone Symposium 2016 – Status and trends...

Special issue: The Polar Stratosphere in a Changing Climate (POLSTRACC) (ACP/AMT...

Atmos. Chem. Phys., 18, 8647–8666, 2018
https://doi.org/10.5194/acp-18-8647-2018

Research article 20 Jun 2018

Research article | 20 Jun 2018

On the discrepancy of HCl processing in the core of the wintertime polar vortices

Jens-Uwe Grooß et al.

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Status: closed
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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 Jens-Uwe Grooß on behalf of the Authors (24 May 2018)  Author's response    Manuscript
ED: Publish subject to technical corrections (29 May 2018) by Bjoern-Martin Sinnhuber
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Short summary
We investigate a discrepancy between model simulations and observations of HCl in the dark polar stratosphere. In early winter, the less-well-studied period of the onset of chlorine activation, observations show a much faster depletion of HCl than simulations of three models. This points to some unknown process that is currently not represented in the models. Various hypotheses for potential causes are investigated that partly reduce the discrepancy. The impact on polar ozone depletion is low.
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