Results 121 to 130 of about 31,874 (242)

Multiple Flux Rope Dynamics: MMS Observations and Reconstruction Results

The Astrophysical Journal
A series of six ion-scale magnetic flux ropes (FR1–6) and a thin current sheet, encountered by Magnetospheric Multiscale spacecraft in the magnetosheath side of the dayside magnetopause boundary layer, are studied for multiple flux rope dynamics in terms
Wai-Leong Teh
doaj   +1 more source

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

GLSP‐EDConvLSTM: Enhancing TEC Prediction Performance by Simultaneously Perceiving Local and Global Spatial Features

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Total Electron Content (TEC) is influenced by local and global scale factors: localized effects causing fine‐grained differences in small areas, and global‐scale effects driving synchronized variations across all over the world. This underscores the necessity of modeling both global and local features for high‐performance TEC prediction.
Xingyue Yao, Haijun Liu, Huijun Le, Shijia Li, Liwei Sun   +4 more
wiley   +1 more source

How Does the Definition of a Geomagnetic Storm Affect the Contents of the Resulting Storm List?

Space Weather, Volume 24, Issue 5, May 2026.
Abstract A geomagnetic storm is a significant and prolonged disturbance of the Earth's magnetic field caused by an enhancement of the ring current. Storms are typically identified using magnetic field measurements from multiple ground‐based magnetometers, and the corresponding dates and times of multiple storms can be collated to form a storm list ...
Atlas M. Patrick, John C. Coxon, Sarah N. Bentley, Maria‐Theresia Walach, Kyle R. Murphy, I. Jonathan Rae, Isobel S. Lockley   +6 more
wiley   +1 more source

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

Space Weather, Volume 24, Issue 5, May 2026.
Abstract 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 Positioning (SPP) technique. The storm produced significant positive storm effects during its main
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
wiley   +1 more source

Solar-cycle variations of interaction regions: In-ecliptic observations from 1 to 5 AU [PDF]

Geofísica Internacional, 2000
We study a combined set of 97 interaction regions detected by Pioneers 10 and 11, Voyagers 1 and 2, and Ulysses from 1 to 5 AU during their respective journeys to Jupiter at different phases of the solar cycle.
J. Américo González-Esparza
doaj  

Leveraging Legacy Broadband Magnetotelluric Data for Geoelectric Field Hazard Assessment in Southern Italy

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Geomagnetically induced currents (GICs) are a significant space weather hazard. Their accurate assessment requires estimating the geoelectric field, which depends on the Earth's subsurface electrical conductivity. While long‐period magnetotelluric (MT) surveys are ideal, archives of legacy broadband MT data, originally acquired for geological ...
P. De Michelis, G. Pignatiello, E. Consolini, M. De Girolamo, A. Siniscalchi   +4 more
wiley   +1 more source

Predicting CME Arrivals From L5 Heliospheric Imagers: The Impact of HI Track Length

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The Solar TErrestrial RElations Observatory (STEREO) mission has laid a foundation for advancing real‐time space weather forecasting by enabling the evaluation of heliospheric imager (HI) data for predicting coronal mass ejection (CME) arrivals at Earth.
T. Amerstorfer, J. Le Louëdec, D. Barnes, M. Bauer, J. A. Davies, S. Majumdar, E. Weiler, C. Möstl   +7 more
wiley   +1 more source

A Closer Look at Small-scale Magnetic Flux Ropes in the Solar Wind at 1 au: Results from Improved Automated Detection

The Astrophysical Journal Supplement Series
Small-scale interplanetary magnetic flux ropes (SMFRs) are similar to ICMEs in magnetic structure, but are smaller and do not exhibit coronal mass ejection plasma signatures.
Hameedullah Farooki, Sung Jun Noh, Jeongwoo Lee, Haimin Wang, Hyomin Kim, Yasser Abduallah, Jason T. L. Wang, Yu Chen, Sergio Servidio, Francesco Pecora   +9 more
doaj   +1 more source

Validating a Non‐Conventional Method for Expansion of Coronal Mass Ejections (CMEs) and Investigating the Evolution of a CME Substructures Using Solar Orbiter and Wind Observations

Space Weather, Volume 24, Issue 5, May 2026.
Abstract We present a validation of our recently proposed non‐conventional method, Constant Acceleration Accounted Perspective (CAAP), for estimating the instantaneous expansion speed of coronal mass ejection (CMEs), even when only single‐point in situ observations are available. This validation is enabled by the radial alignment of Solar Orbiter (SolO)
Anjali Agarwal, Wageesh Mishra, Mathew J. Owens, Tanja Amerstorfer   +3 more
wiley   +1 more source