Results 31 to 40 of about 818 (156)
Space Weather, Volume 24, Issue 8, August 2026.Abstract This study quantitatively assesses the drivers of the Equatorial Ionization Anomaly (EIA) morphology and latitudinal shifts over Southeast Asia during the December solstice. We use a 27‐year ionospheric data set (1998–2024) of total electron content (TEC) and F2‐layer peak electron density (NmF2) under geomagnetically quiet conditions.
Linfeng Huang +4 more
wiley +1 more source
An Ionospheric Storm Scale Index Based on TEC: Comparative Analysis for China Region
Space Weather, Volume 24, Issue 8, August 2026.Abstract Defining a standardized ionospheric storm scale is challenging given the ionosphere's inherent complexity and susceptibility to multiple driving factors. In this study, a novel ionospheric storm scale (ISS) index is developed based on statistical analysis of total electron content (TEC) data from 257 ground‐based GNSS stations across China ...
Shuangshuang Shi +8 more
wiley +1 more source
Predicting Geomagnetic Activity in the Ascending and Declining Phases of the Solar Cycle
Space Weather, Volume 24, Issue 8, August 2026.Abstract Most predictions of space climate, that is, the long‐term behavior of the solar‐terrestrial environment, have focused on forecasting the 11‐year sunspot cycle. Geomagnetic activity, on the other hand, has mainly been predicted in shorter, space weather timescales of up to days to weeks.
Timo Qvick +2 more
wiley +1 more source
Space Weather, Volume 24, Issue 8, August 2026.Abstract Large ionospheric disturbances were observed over Europe during the extreme geomagnetic storm on 10 May 2024. This study analyzes GNSS‐derived total electron content (TEC) and all‐sky imager data to investigate these disturbances. Pronounced TEC enhancements, irregularities, and strong gradients were confined to the auroral region above the ...
Grzegorz Nykiel +5 more
wiley +1 more source
Space Weather, Volume 24, Issue 8, August 2026.Abstract This paper quantitatively characterizes dB/dt peaks at four African equatorial‐ and low‐latitude stations, along latitudinal and local‐time gradients across different phases of selected geomagnetic storms. We investigate dB/dt response for intense geomagnetic storms, Dst ≤ −100 nT observed during solar cycle 24 over four stations in the ...
Wuraola E. Oyegunle +6 more
wiley +1 more source
A Theory of Polar Geomagnetic Storms [PDF]
Geophysical Journal International, 1960 A third part of the hydromagnetic theory of geomagnetic storms is obtained. The first two parts deal with the storm-time variations Dst in terms of isotropically propagating hydromagnetic compression (first phase) and rarefaction (main phase) of the geomagnetic field and its plasma.
openaire +1 more source
Space Weather, Volume 24, Issue 8, August 2026.Abstract This study uses observation data from multi‐constellation (GPS/GLONASS/Galileo/BeiDou) ground‐based Global Navigation Satellite Systems (GNSS) networks and a non‐integrated spherical harmonic function modeling methodology to develop an ionospheric Total Electron Content (TEC) model with high spatiotemporal resolution (1° × 1° in longitude and ...
Heng Xu +5 more
wiley +1 more source
Ionospheric Weather at Two Starlink Launches during Two-Phase Geomagnetic Storms. [PDF]
Sensors (Basel), 2023 Gulyaeva T +2 more
europepmc +1 more source
Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.Abstract This paper presents a global statistical investigation into the topside ionosphere electron density response to X‐class solar flares during geomagnetically quiet conditions (Kp ≤ $\mathit{\le }$ 2) using Swarm satellites (462–511 km) data from 2014 to 2024.
Kenny Palo Monontsi +3 more
wiley +1 more source
Unveiling the combined effects of neutral dynamics and electrodynamic forcing on dayside ionosphere during the 3-4 February 2022 "SpaceX" geomagnetic storms. [PDF]
Sci Rep, 2023 Kakoti G, Bagiya MS, Laskar FI, Lin D.
europepmc +1 more source