Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016

Marsing, Andreas; Jurkat-Witschas, Tina; Grooß, Jens-Uwe; Kaufmann, Stefan; Heller, Romy; Engel, Andreas; Hoor, Peter; Krause, Jens; Voigt, Christiane

doi:https://doi.org/10.5194/acp-19-10757-2019

Articles | Volume 19, issue 16

https://doi.org/10.5194/acp-19-10757-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

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

https://doi.org/10.5194/acp-19-10757-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 16

Research article

|

26 Aug 2019

Research article |

| 26 Aug 2019

Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016

Andreas Marsing, Tina Jurkat-Witschas, Jens-Uwe Grooß, Stefan Kaufmann, Romy Heller, Andreas Engel, Peter Hoor, Jens Krause, and Christiane Voigt

Data sets

HALO database HALO consortium https://doi.org/10.17616/R39Q0T

Short summary

We study the partitioning of inorganic chlorine into active (ozone-depleting) and reservoir species in the lowermost stratosphere of the Arctic polar vortex, using novel in situ aircraft measurements in winter 2015/2016. We observe a change in recovery pathways of the reservoirs HCl and ClONO₂ with increasing potential temperature. A comparison with the CLaMS model relates the observations to the vortex-wide evolution and confirms unresolved discrepancies in the mid-winter HCl distribution.