Results 11 to 20 of about 72 (70)
Space Weather, Volume 21, Issue 9, September 2023., 2023 Abstract Sudden changes in energy input from the magnetosphere during geomagnetic storms could drive extreme variability in the ionosphere‐thermosphere system, which in turn affect satellite operations and other modern infrastructure. Joule heating is the main form of magnetospheric energy dissipation in the ionosphere‐thermosphere system, so it is ...
A. R. Smith +4 more
wiley +1 more source
Space Weather, Volume 21, Issue 8, August 2023., 2023 Abstract The Hunga Tonga‐Hunga Ha'apai volcanic eruption on 15 January 2022 had a significant impact on the ionosphere‐thermosphere system, resulting in large‐scale ionospheric irregularities with longitudinal and latitudinal asymmetries. Multiple instruments recorded these irregularities, indicating the propagation of a westward wave at an average ...
Wang Li +6 more
wiley +1 more source
Space Weather, Volume 21, Issue 3, March 2023., 2023 Abstract The sudden storm commencement (SSC) of 3 November 2021, a severe storm was detected through disturbances in magnetospheric and ring current systems at around 1942 UT. We used a daily variation of total electron content (TEC) from ground‐based GNSS stations, ionosonde parameters and modeled zonal and meridional wind velocities to study the ...
Wellen Rukundo
wiley +1 more source
Tandem Observations of Nighttime Mid‐Latitude Topside Ionospheric Perturbations
Space Weather, Volume 21, Issue 2, February 2023., 2023 Abstract Nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) have been generally observed by ground‐based instruments. However, they provide 2‐dimensional images over only a limited field of view and are not distributed globally. The ground‐based observations reported that MSTID wavefronts exhibit backward‐C shapes virtually straddling ...
Hosub Song +6 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 127, Issue 11, November 2022., 2022 Abstract This paper reports the climatology of medium‐scale traveling ionospheric disturbances (MSTIDs) observed between September 2018 and August 2019 in the nighttime redline airglow intensity measurements from an all‐sky imager located in Sutherland, South Africa (32.4°S, 20.8°E; magnetic latitude: 40.7°S).
Z. T. Katamzi‐Joseph +5 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.Abstract We investigate the formation and interhemispheric asymmetries of storm‐enhanced density (SED) during the April 23–24, 2023 geomagnetic storm using the Global Ionosphere‐Thermosphere Model (GITM) coupled with high‐latitude drivers from the Geospace model.
Yulu Peng +6 more
wiley +1 more source
Space Weather, Volume 23, Issue 9, September 2025.Abstract Large‐scale traveling ionospheric disturbances (LSTIDs) are wave‐like structures propagating through the ionosphere from auroral to lower latitudes, affecting radar‐based technologies and satellite navigation. Due to their disruptive effects, timely detection is crucial. This work presents an autonomous detection technique based on travel‐time
Marco Guerra +8 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.Abstract We present an investigation of a prominent 4.8‐hr tidal wave observed at altitudes between 260 and 500 km, using data collected by the Arecibo incoherent scatter radar during March 17–20, 2015. Within this altitude range, the 4.8‐hr tide exhibits amplitudes of approximately 25 m/s, surpassing the semidiurnal tide and being twice as large as ...
Yun Gong +5 more
wiley +1 more source
Space Weather, Volume 23, Issue 7, July 2025.Abstract This study presents a statistical analysis of the occurrence rate of midlatitude nighttime medium scale traveling ionospheric disturbances (MSTIDs) that were detected in Swarm plasma density measurements from 2014 to 2023. Monthly and local time variations of MSTID occurrence rates are compared in four longitude sectors: America, Africa, Asia,
Zama T. Katamzi‐Joseph +4 more
wiley +1 more source
Space Weather, Volume 23, Issue 6, June 2025.Abstract This study explores the ionospheric response over the Indian sector to the G4‐class geomagnetic storm of 23–24 April 2023. Utilizing multi‐instrument observations and SAMI2 modeling, ionospheric behavior was examined during the storm's main phase (17:41 UT, 23 April–04:03 UT, April 24) and the recovery phase (04:03 UT–22:44 UT, 24 April ...
Rajesh Kumar Barad +4 more
wiley +1 more source