Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry

Kalakoski, Niilo; Verronen, Pekka T.; Seppälä, Annika; Szeląg, Monika E.; Kero, Antti; Marsh, Daniel R.

doi:https://doi.org/10.5194/acp-20-8923-2020

Articles | Volume 20, issue 14

https://doi.org/10.5194/acp-20-8923-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-8923-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 14

Research article

|

28 Jul 2020

Research article |

| 28 Jul 2020

Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry

Niilo Kalakoski, Pekka T. Verronen, Annika Seppälä, Monika E. Szeląg, Antti Kero, and Daniel R. Marsh

Data sets

CESM1.0 PUBLIC RELEASE UCAR http://www.cesm.ucar.edu/models/cesm1.0/

Short summary

Effects of solar proton events (SPEs) on middle atmosphere chemistry were studied using the WACCM-D chemistry–climate model, including an improved representation of lower ionosphere ion chemistry. This study includes 66 events in the years 1989–2012 and uses a statistical approach to determine the impact of the improved chemistry scheme. The differences shown highlight the importance of ion chemistry in models used to study energetic particle precipitation.