Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 22, issue 1
Articles | Volume 22, issue 1
https://doi.org/10.5194/acp-22-245-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-245-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 1
Research article
 | 
07 Jan 2022
Research article |  | 07 Jan 2022

OClO as observed by TROPOMI: a comparison with meteorological parameters and polar stratospheric cloud observations

Jānis Puķīte, Christian Borger, Steffen Dörner, Myojeong Gu, and Thomas Wagner

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Short summary
Chlorine dioxide (OClO) is an indicator for chlorine activation. New OClO data by TROPOMI (S5P) are interpreted in a meteorological context and related to CALIOP PSC observations. We report very high OClO levels for the northern hemispheric winter 2019/20 with an extraordinarily long period with a stable polar vortex. A minor stratospheric warming in the Southern Hemisphere was also observed in September 2019, where usual OClO values rapidly deactivated 1–2 weeks earlier.
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