Articles | Volume 22, issue 12
https://doi.org/10.5194/acp-22-8137-2022
https://doi.org/10.5194/acp-22-8137-2022
Research article
 | 
23 Jun 2022
Research article |  | 23 Jun 2022

The influence of energetic particle precipitation on Antarctic stratospheric chlorine and ozone over the 20th century

Ville Maliniemi, Pavle Arsenovic, Annika Seppälä, and Hilde Nesse Tyssøy

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Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | 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., Rodger, C. J., Clilverd, M. A., and Seppälä, A.: Missing driver in the Sun-Earth connection from energetic electron precipitation impacts mesospheric ozone, Nat. Commun., 5, 5197, https://doi.org/10.1038/ncomms6197, 2014. a
Andersson, M. E., Verronen, P. T., Marsh, D. R., Seppälä, A., Päivärinta, S.-M., Rodger, C. J., Clilverd, M. A., Kalakoski, N., and van de Kamp, M.: Polar Ozone Response to Energetic Particle Precipitation Over Decadal Time Scales: The Role of Medium-Energy Electrons, J. Geophys. Res.-Atmos., 123, 607–622, https://doi.org/10.1002/2017JD027605, 2018. a
Arsenovic, P., Damiani, A., Rozanov, E., Funke, B., Stenke, A., and Peter, T.: Reactive nitrogen (NOy) and ozone responses to energetic electron precipitation during Southern Hemisphere winter, Atmos. Chem. Phys., 19, 9485–9494, https://doi.org/10.5194/acp-19-9485-2019, 2019. a
Brasseur, G. and Solomon, S.: Aeronomy of the Middle Atmosphere: Chemistry and Physics of the Stratosphere and Mesosphere, Atmospheric and Oceanographic Sciences Library, Vol. 32, Springer, https://doi.org/10.1007/1-4020-3824-0, 2005. a, b, c
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We simulate the effect of energetic particle precipitation (EPP) on Antarctic stratospheric ozone chemistry over the whole 20th century. We find a significant increase of reactive nitrogen due to EP, which can deplete ozone via a catalytic reaction. Furthermore, significant modulation of active chlorine is obtained related to EPP, which impacts ozone depletion by both active chlorine and EPP. Our results show that EPP has been a significant modulator of ozone chemistry during the CFC era.
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