Results 61 to 70 of about 14,504 (230)

A High‐Efficiency Multivariable TEC‐SOFTS Model for Ionospheric TEC Prediction: Validation Over China Area During Low and High Solar Activity Periods

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The ionospheric Total Electron Content (TEC) is a key parameter for characterizing the ionospheric properties. In this study, an efficient multivariable time series prediction model, TEC‐Series Core Fusion and efficient multivariable time series (TEC‐SOFTS), was constructed by combining multiple geomagnetic and solar activity indices ...
Chen Chen, Ling Huang, Wenwen Li, Dezhong Chen, Hongping Zhang, Yidong Lou, Lv Zhou   +6 more
wiley   +1 more source

Introducing Reflected GNSS TEC Data Into ANCHOR Ionospheric Data Assimilation Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract ANCHOR is a novel data assimilation (DA) algorithm developed at the U.S. Naval Research Laboratory to improve ionospheric nowcasting by increasing accuracy and decreasing computational cost. As a parameterized DA model, ANCHOR represents the ionosphere using physical parameters such as the F2 layer peak (Nm $Nm$F2), which characterizes a ...
Brenna Royersmith, Victoriya V. Forsythe, Brian Breitsch, Meghan R. Burleigh, Kate A. Zawdie, Y. Jade Morton   +5 more
wiley   +1 more source

Probing Fine-Scale Ionospheric Structure with the Very Large Array Radio Telescope

, 2009
High resolution (~1 arcminute) astronomical imaging at low frequency (below 150 MHz) has only recently become practical with the development of new calibration algorithms for removing ionospheric distortions.
A. S. Cohen, Cohen, Condon, Cotton, H. J. A. Röttgering, Jacobson, Kassim, Kelley, Ma, Rybicki, Schunk   +10 more
core   +1 more source

Precipitation of Relativistic Electrons Into Atmosphere From Earth's Radiation Belts

AGU Advances, Volume 7, Issue 3, June 2026.
A. V. Artemyev
wiley   +1 more source

Smartphone Carrier Phase TEC: A Study Across Ionospheric Spatio‐Temporal Scales

Space Weather, Volume 24, Issue 5, May 2026.
Abstract This study explores the potential of dual‐frequency smartphones as accessible tools for citizen science in ionospheric research. While prior work by Smith et al. (2024, https://doi.org/10.1038/s41586‐024‐08072‐x) demonstrated global ionospheric monitoring using aggregated pseudorange Total Electron Content (TEC) data from millions of Android ...
Nina Servan‐Schreiber, Vincent Ledvina, Joshua Semeter, Jeremy Kuzub, Michael Hirsch, Meghan LeMay, Kshitij Duraphe, Jen‐Hsin Chiao, Yafei Chen, Joaquín Díaz Peña   +9 more
wiley   +1 more source

TEC enhancement due to energetic electrons above Taiwan and the West Pacific

, 2013
The energetic electrons of the inner radiation belt during a geomagnetic disturbance can penetrate in the forbidden range of drift shells located at the heights of the topside equatorial ionosphere (
Dmitriev, A. V., Suvorova, A. V., Tsai, L. -C.   +2 more
core   +3 more sources

Storm‐Time Dst Forecast: An Innovative Approach

Space Weather, Volume 24, Issue 5, May 2026.
Abstract One of the most persistent challenges in the space weather field is predicting the storm‐time response of the geospace without knowing the predicted drivers in the solar wind. Here, a new pattern recognition algorithm is developed to predict storm‐time Dst index from 1 hr to ∼4.5 days into the future. Storm‐time Dst patterns (or reference Dst)
Yongliang Zhang, Larry J. Paxton
wiley   +1 more source

Detection and Modeling of Co‐Seismic Ionospheric Disturbances Induced by the 2024 Mw 6.6 Deep‐Focus Earthquake in Brazil

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract On 20 January 2024, a deep‐focus earthquake (Mw 6.6, depth 607 km) struck near Tarauacá, Brazil, within the subducted South America Nazca Plate. Although it produced no surface damage, the event generated clear co‐seismic ionospheric disturbances (CSIDs) detectable in GNSS‐based Total Electron Content (TEC) data from the Brazilian RBMC network.
Oluwasegun M. Adebayo, Esfhan A. Kherani, Alexandre A. Pimenta, Saul A. Sanchez   +3 more
wiley   +1 more source

Revisiting the Ionospheric Disturbances Over Low Latitude Region of China During Super Typhoon Hato

Space Weather
The ionosphere exhibits complex variations due to the influences from above and below. To distinguish the source of ionospheric disturbances is important for understanding the variation process and the coupling mechanism among different regions.
Ke Li, Donghe Zhang, Yi Zeng, Yaoyu Tian, Guofeng Dai, Zhizhao Liu, Guanglin Yang, Shuji Sun, Guozhu Li, Yongqiang Hao, Zuo Xiao   +10 more
doaj   +1 more source

Atmosphere-Ionosphere Response to the M9 Tohoku Earthquake Revealed by Joined Satellite and Ground Observations. Preliminary results [PDF]

, 2011
The recent M9 Tohoku Japan earthquake of March 11, 2011 was the largest recorded earthquake ever to hit this nation. We retrospectively analyzed the temporal and spatial variations of four different physical parameters - outgoing long wave radiation (OLR)
Davidenko, Dimitri, Kafatos, Menas, Ouzounov, Dimitar, Pulinets, Sergey, Romanov, Alexander, Romanov, Alexey, Taylor, Patrick, Tsybulya, Konstantin   +7 more
core   +2 more sources