Quiet, discrete auroral arcs are an important and fundamental consequence of solar wind-
magnetosphere interaction. We summarize the current standing of observations of such …

We report first results on the study of the high‐latitude ionospheric irregularities observed in
worldwide GPS data during the St. Patrick's Day geomagnetic storm (17 March 2015) …

We study extremely intense substorms with SuperMAG AL (SML) peak intensities<− 2500 nT
(“supersubstorms”/SSSs) for the period from 1981 to 2012. The SSS events were often found …

We present case studies of two interplanetary shock-induced supersubstorms (SSSs) with
extremely high intensities (peak SML− 4418 and− 2668 nT) and long durations (∼ 1.7 …

It is commonly assumed that the aurora borealis (Northern Hemisphere) and aurora australis
(Southern Hemisphere) are mirror images of each other because the charged particles …

Principal component analysis is performed on Birkeland or field‐aligned current (FAC)
measurements from the Active Magnetosphere and Planetary Electrodynamics Response …

Auroral kilometric radiation (AKR) is generated at high latitudes and can propagate down to
low latitudes. Due to the lack of direct observations, the characteristics of AKR in the middle …

The interaction between the interplanetary magnetic field and the geomagnetic field sets up
a large‐scale circulation in the magnetosphere. This circulation is also reflected in the …

Previous studies have shown that there is a correlation between the By component of the
interplanetary magnetic field (IMF) and the By component observed in the magnetotail lobe …

We study the effects of the azimuthal component of interplanetary magnetic field (IMF) and
the Earth's dipole tilt angle (larger DTA means northern winter) on the magnetic local time of …