Articles | Volume 19, issue 21
Atmos. Chem. Phys., 19, 13681–13699, 2019
https://doi.org/10.5194/acp-19-13681-2019

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

Atmos. Chem. Phys., 19, 13681–13699, 2019
https://doi.org/10.5194/acp-19-13681-2019

Research article 11 Nov 2019

Research article | 11 Nov 2019

Nitrification of the lowermost stratosphere during the exceptionally cold Arctic winter 2015–2016

Marleen Braun et al.

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Latest update: 15 Jun 2021
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Short summary
We analyse nitrification of the LMS in the Arctic winter 2015–2016 based on GLORIA measurements. Vertical cross sections of HNO3 for several flights show complex fine–scale structures and enhanced values down to 9 km. The extent of overall nitrification is quantified based on HNO3–O3 correlations and reaches between 5 ppbv and 7 ppbv at potential temperature levels between 350 and 380 K. Further, we compare our result with the atmospheric model CLaMS.
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