Results 81 to 90 of about 1,292 (208)

A Deep Ensemble Transformer Model for Global Ionosphere Prediction and Uncertainty Quantification

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Accurate global ionospheric forecasting is important for various purposes, from geophysical research to practical applications, including real‐time precise positioning and navigation. Existing studies primarily focus solely on deterministic predictions and often overlook uncertainty quantification.
Shuyin Mao, Junyang Gou, Benedikt Soja
wiley   +1 more source

Solar cycle phase and occurrence of intense geomagnetic storms

Earth, Planets and Space
Solar cycles have an asymmetrical shape with a fast rise and a slow decline, which varies from cycle to cycle. This makes it difficult to study the solar cycle phase dependence of the occurrence of intense solar-terrestrial events such as intense ...
S. Watari
doaj   +1 more source

WACCM‐RR: A Regionally‐Refined Version of the Whole Atmosphere Community Climate Model

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.
Abstract We introduce the Whole Atmosphere Community Climate Model with Regional Refinement (WACCM‐RR) and study the impact of directly resolving gravity waves (GWs) in the mesosphere and lower thermosphere (MLT; 70–140 km). Two simulations of 2010 are compared: “Non‐RR” is a standard WACCM case with a horizontal resolution of ∼1° (111 km) globally ...
M. M. Kupilas, D. R. Marsh, P. H. Lauritzen, C. S. Gardner, M. V. Guarino, J. V. Egan, W. Feng, J. M. C. Plane   +7 more
wiley   +1 more source

F‐Region Neutral Wind Response to Multiscale Geomagnetic Forcing During the 27 March 2014 Substorm Event

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Techniques developed in the past few years enable the derivation of multiscale ion convection and particle precipitation patterns from high‐resolution ground‐based observations, and it has been shown in previous studies that such multiscale geomagnetic forcing can contribute significantly to ionospheric and thermospheric disturbances.
Cheng Sheng, Yue Deng, William A. Bristow, Yukitoshi Nishimura, Larry R. Lyons, Mark G. Conde, Christine Gabrielse   +6 more
wiley   +1 more source

Study of the Tidal Variations in the Ionosphere and the MLT Region over Mohe and Beijing During Six Intense Geomagnetic Storms from 2016 to 2021

Remote Sensing
Geomagnetic storms can cause large variations in the ionosphere, but their impacts on the mesosphere and lower thermosphere (MLT) are not well understood. Based on the Total Electron Content (TEC) data and the meteor neutral winds data over Mohe (53.5°N,
Jiarong Ma, Zheng Ma, Jiaxin Bao, Jiahui Luo, Junfeng Yang, Dan Liu   +5 more
doaj   +1 more source

A Semi‐empirical Framework for Dst Prediction Based on Global MHD Simulation of Earth's Magnetosphere

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This study develops a semi‐empirical framework for Dst index forecasting by integrating the PPMLR‐MHD model of Earth's magnetosphere with four established empirical models (Burton, UCB, AK2, and Wang). The framework partitions the physics: global magnetopause and tail currents are simulated by MHD, while the ring current contribution is ...
Jiawen Yue, Xiaocheng Guo, Yuxian Wang, Jianguang Guo, Weiguo Zong, Tian Mao, Chi Wang   +6 more
wiley   +1 more source

Space Weather Effects From Moderate to Severe Geomagnetic Storms in October 2024 Over the Latin American Sector

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This study presents a detailed case study of the ionospheric impacts of moderate (G2) and severe (G4) geomagnetic storms over the Latin American sector, with particular emphasis on the formation and suppression of equatorial plasma bubbles (EPBs).
C. S. Carmo, L. Dai, C. M. Wrasse, D. Barros, H. Takahashi, J. R. Costa, L. F. R. Vital, P. R. Jauer, C. De La Jara, A. J. Carrasco, C. A. O. B. Figueiredo, C. Wang, H. Li, Z. Liu   +13 more
wiley   +1 more source

Long-term variations in the geomagnetic activity level Part II: Ascending phases of sunspot cycles

Annales Geophysicae
Monthly averages of the Helsinki Ak-values have been reduced to the equivalent aa-indices to extend the aa-data set back to 1844. A periodicity of about five cycles was found for the correlation coefficient (<i>r</i>) between geomagnetic ...
H. Nevanlinna, M. Storini, O. Borello Filisetti, V. Mussino   +3 more
doaj  

TEC Prediction Using Cross‐Attention Spatiotemporal Feature Weighted BiConvLSTM and Improved Pre‐Earthquake Anomaly Detection

Space Weather, Volume 24, Issue 6, June 2026.
Abstract To address the complex spatiotemporal characteristics of ionospheric total electron content (TEC), a bidirectional convolutional long short‐term memory network with a dynamic cross‐attention mechanism for spatiotemporal feature weighting (CASF‐BiConvLSTM) is proposed and further combined with the sliding interquartile range (SIQR) method ...
Mengying Lin, Hongteng Ma, Xuefen Zhu, Gangyi Tu, Ang Li, Hao Pan   +5 more
wiley   +1 more source

Validating SCUBAS Predictions of Geomagnetically Induced Voltage in Submarine Cables Using Legacy Superstorm Observations

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Modern submarine communication cables, though fiber‐optic in nature, remain vulnerable to space weather hazards due to their internal conductive cables used for powering repeaters. During geomagnetic storms, variations in the geomagnetic field induce geoelectric fields that drive geomagnetically induced voltages along these cables.
S. Chakraborty, M. D. Hartinger, X. Shi, D. H. Boteler, E. Lawrence, C. Boteler, J. B. H. Baker, M. Macalester   +7 more
wiley   +1 more source