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

Atmos. Chem. Phys., 19, 13681–13699, 2019
https://doi.org/10.5194/acp-19-13681-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

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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GLORIA Chemistry Mode temperature and trace gas retrievals from the POLSTRACC/GW-LCYCLEII/GWEX/SALSA campaigns 2015/2016 Sören Johansson, Wolfgang Woiwode, and Michael Höpfner https://doi.org/10.5445/IR/1000086506

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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.
We analyse nitrification of the LMS in the Arctic winter 2015–2016 based on GLORIA measurements....
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