Results 21 to 30 of about 72 (70)

Electrodynamic and Ionospheric Puzzles of the 10–11 May 2024 Geomagnetic Superstorm

Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.
Abstract On 10 May 2024, a powerful coronal mass ejection arrived at Earth at 17:05UT and caused a major geomagnetic storm. With the minimum SYM‐H excursion of −497 nT (5‐min data), this storm is the largest geomagnetic disturbance since March 1989, and can be categorized as a superstorm. In this work, by using ground‐based and space‐borne instruments,
E. Astafyeva, B. Maletckii, M. Förster, I. D. Ouar, J. D. Huba, M. R. Hairston, W. R. Coley   +6 more
wiley   +1 more source

Observations of Unusual Postsunrise Interhemispheric Geomagnetic Conjugate Super Plasma Depletions at Midlatitudes During the Recovery Phase of the November 2003 Superstorm

Space Weather, Volume 23, Issue 2, February 2025.
Abstract This study reports an extreme ionospheric plasma depletion event over the Eastern Pacific from postmidnight to early morning during the superstorm's recovery phase on 21 November 2003 observed by the DMSP F13, ROCSAT‐1, GRACE, and CHAMP satellites, and two ground‐based GPS receivers. The depletion and its interhemispheric geomagnetic conjugate
Hailun Ye, Xianghui Xue, Yang‐Yi Sun, Tao Yu, Wen Yi, Jianfei Wu, Bingkun Yu, Jianyuan Wang, Chi Long, Baozhu Zhou, Zezhong Li, Chong Wang, Tingdi Chen, Xiankang Dou   +13 more
wiley   +1 more source

Ionospheric and Thermospheric Effects of Hurricane Grace in 2021 Observed by Satellites

Journal of Geophysical Research: Space Physics, Volume 129, Issue 10, October 2024.
Abstract Effects of Hurricane Grace in August 2021 are studied in the thermosphere and ionosphere, using data from the COSMIC‐2, ICON, and GOLD satellites. Significant impacts on electron density, thermospheric winds, and temperature are observed after the onset of the hurricane, compared to the pre‐hurricane phase.
Ayden L. S. Gann, Erdal Yiğit
wiley   +1 more source

Large‐Scale Traveling Ionospheric Disturbances Over the European Sector During the Geomagnetic Storm on March 23–24, 2023: Energy Deposition in the Source Regions and the Propagation Characteristics

Journal of Geophysical Research: Space Physics, Volume 129, Issue 3, March 2024.
Abstract Multiple Large‐Scale Traveling Ionospheric Disturbances (LSTIDs) are observed in the European sector in both day‐time and night‐time during the magnetic storm on March 23–24, 2023. The Total Electron Content (TEC) observation from a network of GNSS receivers shows the propagation of LSTIDs with amplitudes between around 0.5 and 1 TECU ...
Grzegorz Nykiel, Arthur Ferreira, Florian Günzkofer, Pelin Iochem, Samira Tasnim, Hiroatsu Sato   +5 more
wiley   +1 more source

Evening Solar Terminator Waves in Earth's Thermosphere: Neutral Wind Signatures Observed by ICON‐MIGHTI

Journal of Geophysical Research: Space Physics, Volume 129, Issue 2, February 2024.
Abstract The moving solar terminator (ST) generates atmospheric disturbances, broadly termed solar terminator waves (STWs). Despite theoretically recurring daily, STWs remain poorly understood, partially due to measurement challenges near the ST. Analyzing Michelson Interferometer for Global High‐resolution Thermospheric Imaging (MIGHTI) data from NASA'
L. Claire Gasque, Brian J. Harding, Thomas J. Immel, Yen‐Jung Wu, Colin C. Triplett, Sharon L. Vadas, Erich Becker, Astrid Maute   +7 more
wiley   +1 more source

Quantifying Uncertainties in the Quiet‐Time Ionosphere‐Thermosphere Using WAM‐IPE

Space Weather, Volume 22, Issue 2, February 2024.
Abstract This study presents a data‐driven approach to quantify uncertainties in the ionosphere‐thermosphere (IT) system due to varying solar wind parameters (drivers) during quiet conditions (Kp < 4) and fixed solar radiation and lower atmospheric conditions representative of 16 March 2013.
Weijia Zhan, Alireza Doostan, Eric Sutton, Tzu‐Wei Fang   +3 more
wiley   +1 more source

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances Using the Coupled SAMI3 and GITM Models

Geophysical Research Letters, Volume 51, Issue 2, 28 January 2024.
Abstract We present simulation results of the vertical structure of Large Scale Traveling Ionospheric Disturbances (LSTIDs) during synthetic geomagnetic storms. These data are produced using a one‐way coupled SAMI3/Global Ionosphere Thermosphere Model (GITM) model, where GITM provides thermospheric information to SAMI3 (SAMI3 is Another Model of the ...
A. Bukowski, A. Ridley, J. D. Huba, C. Valladares, P. C. Anderson   +4 more
wiley   +1 more source

Quiet Time Thermospheric Gravity Waves Observed by GOCE and CHAMP

Journal of Geophysical Research: Space Physics, Volume 129, Issue 1, January 2024.
Abstract The Gravity Field and Steady‐State Ocean Circulation Explorer (GOCE) and CHAllenging Minisatellite Payload (CHAMP) satellites measure in‐situ thermospheric density and cross‐track wind. When propagating obliquely to the satellite track in a horizontal plane (i.e., not purely along‐track or cross‐track), gravity waves (GWs) can be observed both
Shuang Xu, Sharon L. Vadas, Jia Yue
wiley   +1 more source

Abstracts of the 14th International Congress on Schizophrenia Research (ICOSR). April 21-15, 2013. Orlando Grande Lakes, Florida, USA. [PDF]

Schizophr Bull, 2013
europepmc   +1 more source