Articles | Volume 36, issue 6
Ann. Geophys., 36, 1545–1562, 2018
https://doi.org/10.5194/angeo-36-1545-2018

Special issue: Dynamics and interaction of processes in the Earth and its...

Ann. Geophys., 36, 1545–1562, 2018
https://doi.org/10.5194/angeo-36-1545-2018

Regular paper 23 Nov 2018

Regular paper | 23 Nov 2018

On the variability of the semidiurnal solar and lunar tides of the equatorial electrojet during sudden stratospheric warmings

Tarique A. Siddiqui et al.

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Latest update: 10 May 2021
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Short summary
Extreme meteorological events such as SSWs induce variabilities in the ionosphere by modulating the atmospheric tides, and these variabilities can be comparable to a moderate geomagnetic storm. The equatorial electrojet (EEJ) is a narrow ribbon of current flowing over the dip equator in the ionosphere and is particularly sensitive to tidal changes. In this study, we use ground-magnetic measurements to investigate the semidiurnal solar and lunar tidal variabilities of the EEJ during SSWs.