Results 71 to 80 of about 1,924 (169)

Validation of Global Ionospheric Specification (GIS) Electron Density Measurements During Solar Minimum to Solar Maximum Under Quiet and Disturbed Geomagnetic Conditions

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Global Ionospheric Specification (GIS) three‐dimensional electron density profiles constructed by assimilating the line‐of‐sight total electron content (TEC) from global navigation satellite system (GNSS) radio occultation (RO) measurements by FORMOSAT‐7/COSMIC‐2 (F7/C2) and ground‐based receiver network from international GNSS service ...
P. K. Rajesh, C. H. Charles Lin, C. Y. Lin, T. Matsuo, H. Jin, S. Perwitasari, M. Nishioka, Chao‐Yen Chen   +7 more
wiley   +1 more source

GEOMAGNETIC NEAR FIELD DISTURBANCES AS GENERATED BY THE JANUARY 15, 2022 UNIQUE EXPLOSION OF THE TONGA VOLCANO [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The January 15, 2022 explosion of the Tonga volcano, unique in its power, led to significant disturbances of the Earth’s subsystems, including the lithosphere and the World Ocean — atmosphere — ionosphere — magnetosphere system, plus
L. F. Chernogor
doaj   +1 more source

Exploring the Applicability of Three Popular Models for Predicting the Received Field Strength of HF Sky‐Wave Propagation and Communication

Space Weather, Volume 24, Issue 9, September 2026.
Abstract High‐frequency (HF) radio signals rely on ionospheric reflection and refraction to enable long‐range and transcontinental transmission, making them essential for military command, emergency response, and strategic communications. The received field strength is a key parameter for quantifying propagation conditions and optimizing HF circuit ...
Zhanfeng Zhu, Qiao Yu, Yafei Shi, Cheng Yang, Jieqing Fan, Jian Wang   +5 more
wiley   +1 more source

SPACE-TIME ANALYSIS OF DISTURBANCES IN THE PC4-5 PERIOD RANGE DURING MAGNETIC STORMS BY CORRELATION-SKELETON METHOD

Вестник Мининского университета, 2017
Special method of correlation-skeleton processing of long period MHD disturbed components of the geomagnetic field is developed. To analyze space-time distribution for field components recorded along the meridian 210 at different stages of geomagnetic ...
Yu. V. Manakova, K. A. Pekhteleva, N. A. Barkhatov, S. E. Revunov   +3 more
doaj   +2 more sources

Major Space Weather Risks Identified via Coupled Physics‐Engineering‐Economic Modeling

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract Space weather poses an important but under‐quantified threat to society. While severe geomagnetic storms are recognized as potential global catastrophes, their socio‐economic impacts remain poorly quantified. We present a novel physics‐engineering‐economic framework that links geophysical drivers to power grid geoelectric fields, transformer ...
Edward J. Oughton, Dennies K. Bor, Robert S. Weigel, C. Trevor Gaunt, Ridvan Dogan, Liling Huang, Jeffrey J. Love, Michael Wiltberger   +7 more
wiley   +1 more source

ED‐Autoformer: A New Model for Precise Global TEC Forecast

Space Weather
Total electron content (TEC) is a key parameter for characterizing ionospheric morphology and significantly impacts the Global Navigation Satellite System. The ionosphere responds dramatically to solar and geomagnetic activity, leading to substantial TEC
Jiawei Zhou, Hongtao Cai, Xu Yan, Hong‐wen Xu, Kun Hu, Chao Xiong   +5 more
doaj   +1 more source

Extreme Radiation Belt Dropout During the May 2024 Superstorm

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract The geomagnetic superstorm in May 2024 represents the most extreme space weather event over the past two decades, offering a unique opportunity to investigate radiation belt electron dynamics under exceptionally strong solar wind driving conditions. Observations from the Arase satellite show that relativistic electron fluxes dropped by several
Xingzhi Lyu, Dedong Wang, Bernhard Haas, Miroslav Hanzelka, Yixin Sun, Zikang Xie, Alwin Roy, Yoshizumi Miyoshi, Yihua Zheng, Christos Katsavrias, Sigiava Aminalragia‐Giamini, Nana Higashio, Takefumi Mitani, Takeshi Takashima, Iku Shinohara, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Yuri Y. Shprits   +23 more
wiley   +1 more source

First Observational Results of the Neutral Gas Mass Spectrometer Onboard the China's TianMu‐1 Constellation

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract In situ observations of thermospheric composition have long been scarce, limiting our understanding of the upper atmosphere and its response to space weather. This study focuses on the Neutral Gas Mass Spectrometer (NGMS) onboard the TM19 and TM20 satellites of China's TianMu‐1 constellation, presenting the first systematic elaboration of its ...
Jiangzhao Ai, Yongping Li, Xianguo Zhang, Yueqiang Sun, Hong Zeng, Weihua Bai, Hongbo Wang, Xiaoliang Zheng, Jia Li, Yujie Wang, Yuanyuan Cao, Xinchun Tang   +11 more
wiley   +1 more source

Lightweight Deep Learning for Identification and Suppression of Subway Interference in Geomagnetic Observations

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Geomagnetic observatory networks provide continuous data for space weather monitoring, field modeling, and solid Earth geophysics. Rapid urbanization, however, has introduced pervasive electromagnetic interference from subway traction systems, degrading data quality at a growing number of urban stations.
Qiaoling Huo, Xizhen Wang, Xinxin Ma, Suqin Zhang   +3 more
wiley   +1 more source

Quasi 6‐Day Wave Variability in the Thermosphere and Ionosphere: Observations and Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Satellite observations of the upper mesosphere and lower thermosphere from TIMED‐SABER and ICON‐MIGHTI reveal a clear Quasi 6‐Day Wave (Q6DW) event in the winds and temperatures in this region. This Q6DW event persists across multiple data sets throughout the middle‐to‐upper thermosphere and the F‐region ionosphere, including GOLD disk ...
Oluwafisayo P. Owolabi, Scott L. England, Yen‐Jung Wu   +2 more
wiley   +1 more source