Unsolved problems in strong thermal emission velocity enhancement (STEVE) and the picket fence

Y Nishimura, A Dyer, L Kangas, E Donovan… - Frontiers in Astronomy …, 2023 - frontiersin.org
This paper reviews key properties and major unsolved problems about Strong Thermal
Emission Velocity Enhancement (STEVE) and the picket fence. We first introduce the basic …

Toward the unified theory of SAID‐linked subauroral arcs

EV Mishin, AV Streltsov - Journal of Geophysical Research …, 2024 - Wiley Online Library
We present a unified approach to subauroral arcs within intense subauroral ion drifts (SAID),
which explains the observed transition of a precursor Stable Auroral Red (SAR) arc into …

New insight into the transition from a SAR arc to STEVE

DM Gillies, J Liang, B Gallardo‐Lacourt… - Geophysical …, 2023 - Wiley Online Library
In this study, we present an analysis of the spectral transition of a Stable Auroral Red (SAR)
arc to Strong Thermal Emission Velocity Enhancement (STEVE) emission observed by the …

Impact of uncertainties in land surface processes on subseasonal predictability of heat waves onset over the Yangtze River Valley

Q Zhang, G Sun, G Dai, M Mu - Journal of Geophysical …, 2024 - Wiley Online Library
Land surface processes are strongly associated with heat waves (HWs). However, how the
uncertainties in land surface processes owing to inaccurate physical parameters influence …

Unexpected STEVE observations at high latitude during quiet geomagnetic conditions

B Gallardo‐Lacourt, Y Nishimura… - Geophysical …, 2024 - Wiley Online Library
Abstract Strong Thermal Emission Velocity Enhancement (STEVE), is a captivating optical
phenomenon typically observed in the mid‐latitude ionosphere. This paper presents an …

Proton aurora and relativistic electron microbursts scattered by electromagnetic ion cyclotron waves

M Shumko, B Gallardo-Lacourt, AJ Halford… - Frontiers in Astronomy …, 2022 - frontiersin.org
Charged particle precipitation from Earth's magnetosphere results in stunning displays of the
aurora and energy transfer into the atmosphere. Some of this precipitation is caused by …

It's not easy being green: Kinetic modeling of the emission spectrum observed in STEVE's picket fence

LC Gasque, R Janalizadeh, BJ Harding… - Geophysical …, 2023 - Wiley Online Library
Recent studies suggest that, despite its aurora‐like appearance, the picket fence may not be
driven by magnetospheric particle precipitation but instead by local electric fields parallel to …

Interaction between proton aurora and stable auroral red arcs unveiled by citizen scientist photographs

Y Nishimura, E Bruus, E Karvinen… - Journal of …, 2022 - Wiley Online Library
We utilized citizen scientist photographs of subauroral emissions in the upper atmosphere
and identified a repeatable sequence of proton aurora and subauroral red (SAR) arc during …

Magnetospheric Response to a Pressure Pulse in a Three‐Dimensional Hybrid‐Vlasov Simulation

K Horaites, E Rintamäki, I Zaitsev, L Turc… - Journal of …, 2023 - Wiley Online Library
Vlasiator is a high‐performance ion‐kinetic code that is now conducting 3D hybrid‐Vlasov
simulations of the global magnetosphere. We use Vlasiator to investigate the impact of a …

Converting TREx-RGB green-channel data to 557.7 nm auroral intensity: Methodology and initial results

J Liang, DM Gillies, E Spanswick… - Earth and Planetary …, 2023 - eppcgs.org
Abstract The recently deployed Transition Region Explorer (TREx)-RGB (red-green-blue) all-
sky imager (ASI) is designed to capture “true color” images of the aurora and airglow …