Articles | Volume 40, issue 6
Ann. Geophys., 40, 619–639, 2022
https://doi.org/10.5194/angeo-40-619-2022
Ann. Geophys., 40, 619–639, 2022
https://doi.org/10.5194/angeo-40-619-2022
Regular paper
02 Nov 2022
Regular paper | 02 Nov 2022

Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfvén waves coupling to the dayside magnetosphere

Paul Prikryl et al.

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Short summary
The solar wind interaction with Earth’s magnetic field deposits energy into the upper portion of the atmosphere at high latitudes. The coupling process that modulates the ionospheric convection and intensity of ionospheric currents leads to formation of densely ionized patches convecting across the polar cap. The ionospheric currents launch traveling ionospheric disturbances (TIDs) propagating equatorward. The polar cap patches and TIDs are then observed by networks of radars and GPS receivers.