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Schlagwörter:
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Zusammenfassung:
On 4 November 2021, during the rising phase of solar cycle 25, an intense geomagnetic storm (Kp=8-) occurred. This work is focused on the analysis of the solar wind conditions before and during the geomagnetic storm, the high latitude electrodynamics conditions, estimated through empirical models, and the response of the atmosphere in both hemispheres, based on parameters from the ERA-5 dataset. Our investigations are also supported by confutation and Monte Carlo tests. We find a significant, within 1 day, correspondence between high latitude electrodynamics variations and changes in the temperature, specific humidity, and meridional and zonal wind, in both the troposphere and stratosphere. The results indicate that, in the complex solar wind-atmosphere relationship, a significant role might be played by the intensification of the polar cap potential.
