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.

Data sets

Equivalent Ionospheric Currents (EICs) derived using the Spherical Elementary Currents Systems (SECS) technique at 10 sec Resolution in Geographic Coordinates J. M. Weygand https://doi.org/10.21978/P8D62B

Spherical Elementary Current (SEC) Amplitudes derived using the Spherical Elementary Currents Systems (SECS) technique at 10 sec Resolution in Geographic Coordinates J. M. Weygand https://doi.org/10.21978/P8PP8X

The SuperMAG data processing technique (https://supermag.jhuapl.edu/mag/) J. W. Gjerloev https://doi.org/10.1029/2012JA017683

Data from the CEDAR Madrigal database A. Coster https://w3id.org/cedar?experiment_list=experiments2/2016/gps/06mar16&file_list=los_20160306.001.h5

Data from the CEDAR Madrigal database A. Coster https://w3id.org/cedar?experiment_list=experiments2/2016/gps/14mar16&file_list=los_20160314.001.h5

Data from the CEDAR Madrigal database A. Coster https://w3id.org/cedar?experiment_list=experiments2/2016/gps/15mar16&file_list=los_20160315.001.h5

Data from the CEDAR Madrigal database A. Coster https://w3id.org/cedar?experiment_list=experiments4/2018/gps/05aug18&file_list=los_20180805.001.h5

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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.