Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 39, issue 5
Articles | Volume 39, issue 5
https://doi.org/10.5194/angeo-39-833-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-39-833-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 39, issue 5
Regular paper
 | 
23 Sep 2021
Regular paper |  | 23 Sep 2021

Polar tongue of ionisation during geomagnetic superstorm

Dimitry Pokhotelov, Isabel Fernandez-Gomez, and Claudia Borries

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Short summary
During geomagnetic storms, enhanced solar wind and changes in the interplanetary magnetic field lead to ionisation anomalies across the polar regions. The superstorm of 20 November 2003 was one of the largest events in recent history. Numerical simulations of ionospheric dynamics during the storm are compared with plasma observations to understand the mechanisms forming the polar plasma anomalies. The results are important for understanding and forecasting space weather in polar regions.
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