Results 71 to 80 of about 865 (172)

Reliability Assessment of Multi-Source TEC Maps over Brazil Using Ground Truth Validation

Atmosphere
Total Electron Content (TEC) maps allow the evaluation of the state of the ionosphere. There are many providers/sources of worldwide or regional TEC maps for the continuous monitoring of the ionosphere, which employ different GNSS monitoring networks for
Marco A. de U. Cintra, Stephan Stephany, Lamartine N. F. Guimarães, Eurico R. de Paula, André R. F. Martinon, Patrícia M. de S. Negreti, Alison de O. Moraes, Jonas R. de Souza   +7 more
doaj   +1 more source

Assessment of Ionospheric Model Performance Over the US During the Extreme G5 2024 Mother's Day Geomagnetic Storm

Space Weather
This study evaluates 17 ionospheric models' performance over the Continental United States (CONUS) during the 2024 Mother's Day geomagnetic storm, using ground‐based GNSS Total Electron Content (TEC) and single‐frequency (SF) precise Single Point ...
Min‐Yang Chou, Jia Yue, Deimos Ibáñez Segura, J. D. Huba, Tzu‐Wei Fang, Charles Lin, Chi‐Yen Lin, Aaron Bukowski, Aaron Ridley, Ivan Galkin, Dieter Bilitza, Jack Wang, Mohammed Mainul Hoque, Maksym Petrenko, Paul Dimarzio, Maria M. Kuznetsova   +15 more
doaj   +1 more source

Can we detect X/M/C-class solar flares from global navigation satellite system data?

Results in Physics, 2019
Based on the total electron content (TEC) data from global navigation satellite system (GNSS), we analyzed 224 classified solar flares (SFs) occurred in 2014–2017. We suggest an algorithm for SF automatic detection.
Semen V. Syrovatskiy, Yury V. Yasyukevich, Ilya K. Edemskiy, Artem M. Vesnin, Sergey V. Voeykov, Ilya V. Zhivetiev   +5 more
doaj   +1 more source

The Error of Global Ionospheric Map‐TEC During Equatorial Plasma Bubble Event in the High Solar Activity Year

Space Weather
In this study, the error of total electron content (TEC) derived from the global ionospheric map (GIM) (GIM‐TEC) during equatorial plasma bubble (EPB) event is investigated for the first time.
Long Tang, Fenkai Zhang, Wu Chen
doaj   +1 more source

The 27-Day Oscillation in Ionospheric Total Electron Content Observed by GNSS

Atmosphere
The 27-day oscillation in total electron content (TEC) is analysed by means of world maps of TEC. The TEC maps are derived from measurements of the ground receiver network of the Global Navigation Satellite System (GNSS) and are provided by the ...
Klemens Hocke, Guanyi Ma
doaj   +1 more source

Multi-Instrument Observations of the Ionospheric Response Caused by the 8 April 2024 Total Solar Eclipse

Remote Sensing
This paper investigates ionospheric response characteristics from multiple perspectives based on globally distributed GNSS data and products, ionosonde data, FORMOSAT-7/COSMIC-2 occultation data, and Swarm satellite observations caused by the total solar
Hui Zhang, Ting Zhang, Xinyu Zhang, Yunbin Yuan, Yifan Wang, Yutang Ma   +5 more
doaj   +1 more source

Study on the Three-Dimensional Evolution of Ionospheric Disturbances in China During the Geomagnetic Storm on December 1, 2023

Atmosphere
On 1 December 2023, a strong geomagnetic storm was triggered by an interplanetary shock caused by a coronal mass ejection (CME). This study used data from 193 Global Navigation Satellite System (GNSS) observation stations in China to study the three ...
Yifei Yang, Jian Kong, Xiangping Chen, Congcong Ling, Changzeng Tang, Yibin Yao, Zhaorong Zhu   +6 more
doaj   +1 more source

Temporal and Spatial Analysis of the Impact of the 2015 St. Patrick’s Day Geomagnetic Storm on Ionospheric TEC Gradients and GNSS Positioning in China Using GIX and ROTI Indices

Remote Sensing
Geomagnetic storms induce ionospheric disturbances, significantly affecting Global Navigation Satellite System (GNSS) positioning accuracy. This study investigates how geomagnetic storm-induced ionospheric irregularities influence GNSS Precise Point ...
Zhihao Fu, Ningbo Wang, Xuhui Shen, Ang Li   +3 more
doaj   +1 more source

Tracking tsunami propagation and Island's collapse after the Hunga Tonga Hunga Ha'apai 2022 volcanic eruption from multi-space observations. [PDF]

Sci Rep, 2023
Shrivastava MN, Sunil AS, Maurya AK, Aguilera F, Orrego S, Sunil PS, Cienfuegos R, Moreno M.   +7 more
europepmc   +1 more source

TEC Parametric Model validation and Approach to GNSS operational conditions

, 2017
Preprint
openaire   +1 more source