Ms. Polina Pikulina Profile

Polina Pikulina

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Proceedings Article | 16 December 2021 Paper

Response of the upper atmosphere to irradiance increase after the solar flare on 6 September 2017

P. Pikulina, I. Mironova, E. Rozanov, T. Sukhodolov, A. Karagodin

Proceedings Volume 11916, 1191680 (2021) https://doi.org/10.1117/12.2603374

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In this study, we analyzed the reaction of the upper atmosphere to an increase in illumination after the solar flare on 6 September 2017. This intense solar-terrestrial disturbance event was caused by the active region of the Sun AR2673, which generated several powerful X-class flares. The strongest X9.3 flare occurred on 6 September 2017 inducing an increase in illumination in the extreme ultraviolet and soft X-ray ranges of the solar spectrum. We used the FISM2 empirical model to derive the flare irradiance data and the HAMMONIA 3D high-top chemistry-climate model to study the related atmospheric effects. We showed that the event has significantly affected the upper atmospheric chemistry and produced up to 300% increase in odd nitrogen around 80 km.

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