Articles | Volume 21, issue 14
Atmos. Chem. Phys., 21, 11041–11052, 2021
https://doi.org/10.5194/acp-21-11041-2021
Atmos. Chem. Phys., 21, 11041–11052, 2021
https://doi.org/10.5194/acp-21-11041-2021
Research article
21 Jul 2021
Research article | 21 Jul 2021

Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century

Ville Maliniemi et al.

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Revised manuscript under review for ACP
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Subject: Gases | Research Activity: Atmospheric Modelling | Altitude Range: Stratosphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Anderson, J. G., Toohey, D. W., and Brune, W. H.: Free radicals within the Antarctic vortex: the role of CFCs in Antarctic ozone loss, Science, 251, 39–46, https://doi.org/10.1126/science.251.4989.39, 1991. a
Andersson, M. E., Verronen, P. T., Marsh, D. R., Seppälä, A., Päivärinta, S., Rodger, C. J., Clilverd, M. A., Kalakoski, N., and van de Kamp, M.: Polar ozone response to energetic particle precipitation over decadal time ccales: the role of medium-energy electrons, J. Geophys. Res.-Atmos., 123, 607–622, https://doi.org/10.1002/2017JD027605, 2018. a
Arsenovic, P., Rozanov, E., Stenke, A., Funke, B., Wissing, J. M., Mursula, K., Tummon, F., and Peter, F.: The influence of middle range energy electrons on atmospheric chemistry and regional climate, J. Atmos. Sol.-Terr. Phy., 149, 180–190, https://doi.org/10.1016/j.jastp.2016.04.008, 2016. a
Asikainen, T., Salminen, A., Maliniemi, V., and Mursula, K.: Influence of enhanced planetary wave activity on the polar vortex enhancement related to energetic electron precipitation, J. Geophys. Res.-Atmos., 125, e2019JD032137, https://doi.org/10.1029/2019JD032137, 2020. a
Baumgaertner, A. J. G., Jöckel, P., Dameris, M., and Crutzen, P. J.: Will climate change increase ozone depletion from low-energy-electron precipitation?, Atmos. Chem. Phys., 10, 9647–9656, https://doi.org/10.5194/acp-10-9647-2010, 2010. a
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We simulate ozone variability over the 21st century with different greenhouse gas scenarios. Our results highlight a novel mechanism of additional reactive nitrogen species descending to the Antarctic stratosphere from the thermosphere/upper mesosphere due to the accelerated residual circulation under climate change. This excess descending NOx can potentially prevent a super recovery of ozone in the Antarctic upper stratosphere.
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