Electrodynamics

Formation of Double Tongues of Ionization During the 17 March 2013 Geomagnetic Storm

Graphic image showing polar maps of the simulated electron density
Friday, October 2, 2020

During geomagnetic disturbances, enhanced high‐latitude convection transports ionospheric F2‐region plasma from the dayside midlatitude region into the polar cap, leading to structures such as tongues of ionization (TOIs) and patches.

Responses of the Thermosphere and Ionosphere System to Concurrent Solar Flares and Geomagnetic Storms

Graphic depicting simulated vertical E x B drift velocity
Wednesday, July 1, 2020

We conducted numerical simulations to examine dayside thermosphere and ionosphere responses to concurrent solar flares and a geomagnetic storm during September 6th – September 11th, 2017, as well as the interplay of flare and storm effects.

Junjie Chen

Junjie Chen is a scientific visitor in the High Altitude Observatory at the National Center for Atmospheric Research. His research interests include electrodynamics in the upper atmospheric.

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