Results 61 to 70 of about 338 (148)

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

Space Weather
Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning.
Dengkui Mei, Xiaohong Zhang, Xiaodong Ren, Xuan Le, Wentao Yang, Ahmed Abdelaziz   +5 more
doaj   +1 more source

Climatology of Plasma Irregularities Using ROTI Index From 2008 to 2023 in East West Asia

Space Weather, Volume 24, Issue 4, April 2026.
Abstract This study investigates characteristics of ionospheric irregularities over the East–West Asian equatorial region using the Rate of TEC Index (ROTI) derived from Global Navigation Satellite System (GNSS) measurements. Data from four stations (GUAM, PIMO, CUSV, and IISC) were analyzed for 2008–2023, covering solar cycle (SC) 24 and the ascending
Pandit Drabindra, Fleury Rolland, Amory‐Mazaudier Christine   +2 more
wiley   +1 more source

Rapid Evolution of Super Equatorial Plasma Bubbles and X‐Pattern EIA Formation During Extreme Storm Conditions on 12 November 2025

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Extreme conditions during storms profoundly alter the evolution of equatorial plasma bubbles (EPBs), yet the key dynamics remains poorly understood. We document the rapid expansion, contraction, and decay of super EPBs in South America during the 12 November 2025 storm with Interplanetary Magnetic Field (IMF) Bz/By magnitude exceeding ∼50 nT ...
Shasha Zou, Lei Liu, Hang Liu, Anthea Coster, Robert Kerr, Jonas Souza, Angela Santos   +6 more
wiley   +1 more source

Climatology of Satellite Traces over European Mid-Latitudes and Their Association with Travelling Ionospheric Disturbances

Applied Sciences
Satellite traces (STs) are additional ionogram echoes associated with off-vertical reflections from spatially structured F-region plasma. This study investigates the climatology of STs over the European mid-latitude ionosphere using Digisonde ionograms ...
Ankitha Nandakumar, Haris Haralambous, Ola Abu Elezz, Blessy Varghese, Krishnendu Sekhar Paul, Tiju Joseph Mathew   +5 more
doaj   +1 more source

The OI-135.6 nm Nighttime Emission in ICON-FUV Images: A New Tool for the Observation of Classical Medium-Scale Traveling Ionospheric Disturbances?

, 2019
peer reviewedThe National Aeronautics and Space Administration Ionospheric Connection Explorer (ICON) mission will study the close relationship between the ionosphere, the atmospheric weather, and space weather using in situ and remote sensing ...
Immel, Thomas, G. Wautelet, Hubert, Benoît, J.‐C. Gérard, Gérard, Jean-Claude, T. J. Immel, B. Hubert, Wautelet, Gilles   +7 more
core   +1 more source

First LiDAR Observation of Quasi‐Periodic Structures in Mid‐Latitude E‐Region Meteoric Ca+ Layers

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We report the first LiDAR observations of continuous quasi‐periodic (QP) metal density structures in mid‐latitude E‐region meteoric Ca+ layers using an all‐solid‐state LiDAR system in Beijing (40.4°N, 116.0°E). These QP Ca+ structures, with periods of 2–30 min and vertical wavelengths of ∼2–15 km, were primarily observed above 100 km.
Jixin Guo, Tao Yu, Lifang Du, Jin Wang, Xiangxiang Yan, Yan Yu, Wenyu Hao, Yifan Qi, Haoran Zheng, Guotao Yang   +9 more
wiley   +1 more source

Resolving the generation mechanisms and electrodynamical effects of Medium Scale Traveling Ionospheric Disturbances (MSTIDs)

Frontiers in Astronomy and Space Sciences
The term “Medium-Scale Traveling Ionospheric Disturbances” is used to describe a number of different propagating phenomena in ionospheric plasma density with a scale size of hundreds of km.
Jeff Klenzing, Kate Zawdie, Elvira Astafyeva, Anna Belehaki, Meghan Burleigh, Angeline G. Burrell, Cosme A. O. B. Figueiredo, Nathaniel A. Frissell, Weizheng Fu, Dustin Hickey, Joe Huba, Pavel Inchin, Stephen R. Kaeppler, Viswanathan Lakshmi Narayanan, Mani Sivankandan, Jonathon M. Smith, Jonathon M. Smith, Chao Xiong, Tatsuhiro Yokoyama, Matt Zettergren, Shun-Rong Zhang   +20 more
doaj   +1 more source

Global GNSS Observation of Mesoscale Ionospheric Irregularities (2006–2024)

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Mesoscale ionospheric irregularities are statistically investigated using an unprecedented 19‐year long‐term global GNSS (Global Navigation Satellite System) TEC (total electron content) data set. These irregularities are represented by ionospheric fluctuations within a 5°× ${}^{\circ}\times $ 3.75° ${}^{\circ}$ (latitude by longitude) region ...
Shun‐Rong Zhang, Jing Liu, Anthea J. Coster, Sevag Derghazarian, Philip J. Erickson, Larisa P. Goncharenko, Nestor Aponte, William Rideout   +7 more
wiley   +1 more source

Characteristics of Nighttime Medium‐Scale Traveling Ionospheric Disturbances: Longitudinal Comparison of Their Seasonal and Local Time Variations

Space Weather
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.
Zama T. Katamzi‐Joseph, John Bosco Habarulema, Yuichi Otsuka, Tshimangadzo M. Matamba, Amoré E. Nel   +4 more
doaj   +1 more source

First simultaneous observations of daytime MSTIDs over North America using GPS-TEC and DEMETER satellite data

, 2009
International audienceWe present simultaneous observations of daytime medium-scale traveling ionospheric disturbances (MSTIDs) over North America, using measurements of the Total Electron Content (TEC) by the US GPS network and ionospheric plasma data ...
Lebreton, Jean-Pierre, Otsuka, Yuichi, Onishi, Tatsuo, Berthelier, Jean-Jacques, Tsugawa, Takuya   +4 more
core   +1 more source