Results 31 to 40 of about 865 (172)

Monitoring the ionosphere based on the Crustal Movement Observation Network of China

Geodesy and Geodynamics, 2015
The Global Navigation Satellite System (GNSS) is becoming important for monitoring the variations in the earth's ionosphere based on the total electron content (TEC) and ionospheric electron density (IED).
Yunbin Yuan, Zishen Li, Ningbo Wang, Baocheng Zhang, Hui Li, Min Li, Xingliang Huo, Jikun Ou   +7 more
doaj   +1 more source

Three-dimensional morphology of equatorial plasma bubbles deduced from measurements onboard CHAMP [PDF]

Annales Geophysicae, 2015
Total electron content (TEC) between Low-Earth-Orbit (LEO) satellites and the Global Navigation Satellite System (GNSS) satellites can be used to constrain the three-dimensional morphology of equatorial plasma bubbles (EPBs).
J. Park, J. Park, H. Lühr, M. Noja
doaj   +1 more source

Large‐Scale Traveling Ionospheric Disturbances Over the Asian‐Pacific Sector During 10–11 May 2024 Geomagnetic Superstorm: Ionosonde Observation and MAGE Simulation

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The large‐scale traveling ionospheric disturbances (LSTIDs) over the Asian‐Pacific sector during the 10–11 May 2024 superstorm are investigated using ionosonde observation and simulation from a whole geospace model—Multiscale Atmosphere Geospace Environment (MAGE), which fully couples multiple magnetosphere, ionosphere and thermosphere models.
Tianyang Hu, Wenbin Wang, Kevin H. Pham, Haonan Wu, Liying Qian, Quan Gan, Nicholas M. Pedatella   +6 more
wiley   +1 more source

Feasibility analysis of GNSS-based ionospheric observation on a fast-moving train platform (GIFT)

Satellite Navigation, 2021
The ionospheric effect plays a crucial role in the radio communications. For ionospheric observing and monitoring, the Global Navigation Satellite System (GNSS) has been widely utilized.
Shiwei Yu, Zhizhao Liu
doaj   +1 more source

Global Observational Comparison of Large‐Scale Traveling Atmospheric and Ionospheric Disturbances During the May 2024 Geomagnetic Storm

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract During the geomagnetic storm on 10 May 2024, neutral density measurements from 14 Tianmu, Swarm, and GRACE‐FO satellites at ∼510 km altitude, combined with total electron content (TEC) observations, enabled the first global observational comparison of large‐scale traveling atmospheric and ionospheric disturbances (LSTADs/TIDs) via snapshots ...
Xiaolong Wei, Guoying Jiang, Yajun Zhu, Yongping Li, Jiangzhao Ai, Tingwei Han, Huijun Le, Aibin Zhang, Jiyao Xu   +8 more
wiley   +1 more source

3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC [PDF]

Science of Tsunami Hazards, 2021
Global Navigation Satellite System (GNSS) satellite observations can obtain Total Electron Content (TEC) values in the ionosphere layer. The TEC value is obtained by decreasing the phase difference of the GNSS satellite’s two carrier waves (L-band).
Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id, Ira Mutiara Anjasmara, Ihsan Naufal Muafiry, Nurrohmat Widjajanti, Deasy Arisa, Buldan Muslim, Meilfan Eka Putra   +6 more
doaj  

Multi‐Step Gravity Wave Propagation From a Tropospheric Vortex to the Ionosphere Near the Tibetan Plateau

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The atmosphere and ionosphere form a vertically coupled system in which disturbances in the lower atmosphere can modulate ionospheric variability. Using reanalysis data, ground‐based GNSS observations, and COSMIC‐2 profiles, we investigate gravity waves (GWs) generation and upward coupling during a southwest vortex (SWV) event over the Tibetan
Wei Yao, Huijun Le, Wenjie Sun, Libo Liu, Yiding Chen   +4 more
wiley   +1 more source

Detection of pulsating aurora from GNSS total electron content

Earth, Planets and Space
This study investigates, for the first time, the effect of pulsating aurora on the Global Navigation Satellite System (GNSS) total electron content (TEC).
Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Tima Sergienko, Pierre J. Cilliers, Keisuke Hosokawa, Yasunobu Ogawa, Tero Raita   +6 more
doaj   +1 more source

Height‐Dependent Evolution of the Ionospheric Response to the May 2024 Superstorm: Global GNSS‐POD, GNSS‐RO, and Ground‐Based Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Capturing global ionospheric response during extreme geomagnetic storms remains a major observational challenge. During 10–11 May, 2024 superstorm, we investigate the height‐dependent response of the F‐region using multi‐constellation GNSS‐POD limb‐sounding measurements from COSMIC‐2, Spire, PlanetiQ, and FengYun‐3 satellites. Approximately 12,
Nimalan Swarnalingam, Dong L. Wu, Daniel J. Emmons, Cornelius Csar Jude H. Salinas   +3 more
wiley   +1 more source

Big L Days in GNSS TEC Data

Atmosphere
Big L days are days when the lunar semidiurnal variation M2 in the ionosphere is strongly enhanced by a factor of 2 or more. The worldwide network of ground-based receivers for the Global Navigation Satellite System (GNSS) has monitored the ionospheric total electron content (TEC) since 1998.
Klemens Hocke, Guanyi Ma
openaire   +1 more source