Results 131 to 140 of about 165,440 (288)
Sudden Ionospheric Disturbances Generated by Solar Flares—Not so Sudden?
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract It is known that solar flares generate instantaneous ionization enhancement, referred to as sudden ionospheric disturbance (SID), that occurs simultaneously across the entire dayside. In this work, we use high‐rate 1‐s data of total electron content (TEC) to analyse ionospheric response to 13 solar flares that occurred in 2003–2023.
B. Maletckii +3 more
wiley +1 more source
Do Migrating Semidiurnal Tidal Winds From the Lower Atmosphere Control Thermospheric Winds?
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Lower atmospheric tides are important for driving the thermospheric and ionospheric structure. The effects of different lower atmospheric migrating semidiurnal tidal fields of neutral density, temperature, and winds on the thermospheric winds are investigated by using the global ionosphere‐thermosphere model with forcing of the tides at the ...
Chen Wu, Aaron J. Ridley
wiley +1 more source
A Physics‐Informed Neural Network Approach to the Gannon Storm
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Extreme geomagnetic storms, such as the May 2024 Gannon event, pose significant risks to technological infrastructure, requiring robust forecasting models. Here, we apply Physics‐Informed Neural Networks (PINNs) to the Burton equation to model the storm's ring current dynamics by studying the temporal evolution of the SuperMAG SMR index during
M. Lacal +3 more
wiley +1 more source
International Reference Ionosphere 2016: From ionospheric climate to real‐time weather predictions
, 2017 D. Bilitza +6 more
semanticscholar +1 more source
Asymmetrically Distributed Kelvin‐Helmholtz Instability at Venusian Magnetosphere
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract The asymmetric distribution of Kelvin‐Helmholtz (KH) instability at Venusian ionopause is investigated using a multifluid model. Results show that KH instability distributes asymmetrically, preferentially developing in the −E (anti‐parallel to the interplanetary electric field) hemisphere.
Maodong Yan +7 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract This study presents a full‐period imaging of the thermospheric composition response to the 14 October 2023 annular solar eclipse, combining GOLD (Global‐scale Observations of the Limb and Disk) far‐ultraviolet observations with solar‐irradiance‐driven WACCM‐X (Whole Atmosphere Community Climate Model with thermosphere–ionosphere extension ...
Yu Jiao +4 more
wiley +1 more source
Solar wind maintenance of the nighttime Venus ionosphere [PDF]
An attempt is made to establish an ionization source capable of maintaining the nighttime Venus ionosphere. The corpuscular ionization and heating caused by the penetration of solar wind plasma into the nightside ionosphere was suggested as a possible ...
Hartle, R. E.
core +1 more source
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang +7 more
wiley +1 more source
Frontiers in Earth ScienceIntroductionWe quantify temporal variations of geoid heights (ΔN) across Kazakhstan during 2019–2024 using satellite gravimetry, and relate these changes to recent extreme hydrological and seismic events.MethodsMonthly ΔN fields were derived from GRACE ...
Daniya Shoganbekova +7 more
doaj +1 more source