Results 71 to 80 of about 819 (150)

Observation of Shortwave Fadeout Events Using Chinese Dual Auroral Radar Network (CN‐DARN) During the Severe Solar Storm in May 2024

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract Shortwave fadeout (SWF) is a typical dayside high‐frequency radio disturbance caused by solar flare‐induced ionospheric ionization enhancement. Using newly built Chinese Dual Auroral Radar Network (CN‐DARN) observations, we investigate two X‐flare‐driven SWFs during the May 2024 geomagnetic superstorm (SYM‐H = −518 nT), on 10 May (pre‐storm ...
Junjie Tong   +9 more
wiley   +1 more source

Use of the International Reference Ionosphere 2012 model to calculate emission frequency scale of the ionospheric Alfvén resonator

open access: yesJournal of Space Weather and Space Climate, 2015
We apply the IRI-2012 version of the International Reference Ionosphere model to calculate the difference between frequencies of adjacent harmonics (frequency scale) of the ionospheric Alfvén resonator (IAR) emission.
Potapov Alexander S.   +2 more
doaj   +1 more source

Model of mid-and low-latitude F region ionosphere and protonosphere

open access: yesGeofísica Internacional, 1981
En este trabajo se resuelven las ecuaciones combinadas de continuidad y momentum de los iones O+ y H+, en la región F y la protonosfera, para una estación de latitud media (Arecibo) y una estación de latitud baja (Jicamarca) con el fin de investigar el ...
A. Tan, S.T. Wu
doaj   +1 more source

Thermospheric Neutral Species Reduced Order Probabilistic Emulator: Dimensionality Reduction

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract One area of significant interest for space operations is the application of physics‐based thermosphere models for accurate drag modeling. However, their computational complexity limits their use in operational settings. To address this, recently developed reduced‐order probabilistic emulators (ROPE) based on the Thermosphere‐Ionosphere ...
Nathaniel E. Michek, Piyush M. Mehta
wiley   +1 more source

Analysis of the Geomagnetic Storm of May 2024 at Ebre and Livingston Island Observatories and of the GICs Generated in the Spanish Power Transmission Grid

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract This study analyzes the 10–12 May 2024 geomagnetic storm using data from the Ebre (Spain) and Livingston Island (Antarctica) geomagnetic observatories, together with modeling approaches to assess its impact on the Spanish power transmission grid.
J. M. Torta, S. Marsal
wiley   +1 more source

Interhemispheric conjugate effect in longitude variations of mid-latitude ion density

open access: yesJournal of Space Weather and Space Climate, 2019
Earlier incoherent scatter radar measurements revealed upward topside ion fluxes in the summer and downward fluxes in the winter at mid-latitudes at night; a summer to winter interhemispheric coupling was accordingly inferred.
Chen Yiding   +3 more
doaj   +1 more source

Physics‐Based Ensemble of Models for F2 Peak Parameters of the Ionosphere: Comparison With COSMIC‐2 Measurements

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract Space weather events can significantly alter the ionospheric electron density, affecting signal transmission and navigation accuracy in satellite‐based systems. Consequently, there is an urgent need for reliable forecasting of the Thermosphere‐Ionosphere (TI) system.
J. Pereira   +5 more
wiley   +1 more source

Type‐III Solar Radio Bursts at Mars: A 16.5‐Year Catalog From Mars Express‐MARSIS at 0.1–5.5 MHz

open access: yesSpace Weather, Volume 24, Issue 10, October 2026.
Abstract The most intense radio feature in the Solar System are the solar Type‐III radio bursts, which are associated with electron beams that propagate along open magnetic field lines. Although solar radio bursts have been studied since the 1940s, observations remain mainly restricted within 1 AU.
Beatriz Sánchez‐Cano   +22 more
wiley   +1 more source

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed   +7 more
wiley   +1 more source

Modeling Storm‐Time Post‐Midnight Equatorial Plasma Bubbles With SAMI3‐WACCMX: Impacts of Neutral Winds, Thermospheric Composition, and Atmospheric Waves

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou   +4 more
wiley   +1 more source

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