Results 91 to 100 of about 7,217 (205)

Michigan Geospace Model With Ensemble Forecasting and Particle Filtering: Modeling the May 2024 Extreme Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This paper introduces an updated version of the University of Michigan Geospace model. The Geospace model has been used for operational forecasting at the Space Weather Modeling Center of the National Oceanic and Atmospheric Agency since 2016 with regular updates. The current operational version, Geospace V2, was launched in 2021 and is driven
Gábor Tóth, Pauline Dredger, Tuija Pulkkinen   +2 more
wiley   +1 more source

Evolution of the near-Earth magnetotail associated with substorm onsets: revisiting the issues of onset timing and substorm triggering mechanism

Earth, Planets and Space
The triggering mechanism of the substorm onset has been a major issue in magnetospheric research. Various models have been proposed so far. To understand the causal relationship of magnetotail processes associated with substorm onsets, our previous ...
Yukinaga Miyashita, Akimasa Ieda, Shinobu Machida   +2 more
doaj   +1 more source

Systematic Component‐Level Characterization of Electricity Transmission Infrastructure for Space Weather Risk Assessment

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Space weather risk assessment is constrained by the lack of available asset information needed to model geomagnetically induced currents (GICs) in electricity transmission infrastructure. We propose a systematic method that enables risk analysts to collect their own open‐source substation data.
Dennies K. Bor, Edward J. Oughton, Evan A. Peters, Noah Rivera, C. Trevor Gaunt, Robert S. Weigel, Michael Wiltberger   +6 more
wiley   +1 more source

Benchmarking Deep Learning Models for Real‐Time Prediction of Post‐Peak Solar Flare Irradiance Using FISM2 Data

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This study presents a deep learning framework for real‐time prediction of post‐peak solar flare irradiance. The model targets the soft X‐ray band (0.1–0.8 nm) and three extreme ultraviolet (EUV) wavelength bands (9.0–9.9 nm, 13.0–13.9 nm, and 30.0–30.9 nm), and produces forecasts at 1‐min cadence for 3 hr after the flare peak.
Jeong‐Heon Kim, Junmu Youn, Sung‐Hong Park, Seungwoo Ahn, Young‐Sil Kwak, Yong‐Jae Moon, P. C. Chamberlin   +6 more
wiley   +1 more source

Long‐Lived Equatorial Plasma Bubbles Persisting Into the Afternoon Over the Pacific Sector During the Recovery Phase of the April 2023 Geomagnetic Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Equatorial plasma bubbles (EPBs) are typically nighttime ionospheric irregularities, and their persistence into daytime sectors remains insufficiently understood. Here, we investigate long‐lived EPB‐related plasma depletion structures over the Pacific sector during the recovery phase of the 23–25 April 2023 geomagnetic storm using Formosa ...
Hailun Ye, Wen Yi, Jianfei Wu, Bingkun Yu, Penghao Tian, Xianghui Xue, Yajun Zhu, Jianyuan Wang, Jianyong Lu, Jian Li, Chong Wang, Tingdi Chen, Xiankang Dou   +12 more
wiley   +1 more source

Did Space Weather Delay the 10:05 p.m. Train Departure From Exeter on 18 October 1841?

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Although the Carrington Event of 1859 is typically cited as the first extreme space weather event of the scientific era, it is not the earliest example of modern human technology being impacted by geomagnetic activity. The literature includes reliable accounts of disturbances to telegraph equipment during geomagnetic storms dating to the late ...
James A. Wild, Ciaran D. Beggan, David H. Boteler, William B. Cade III, Brett A. Carter, Michael Hapgood   +5 more
wiley   +1 more source

Cosmic radio noise absorption events associated with equatorward drifting arcs during a substorm growth phase [PDF]

, 2004
International audienceCosmic radio noise absorption (CNA) events associated with equatorward drifting arcs during a substorm growth phase are studied by using simultaneous optical auroral, IRIS imaging riometer and EISCAT incoherent scatter radar ...
S. R. Marple, Aikio, A. T., A. T. Aikio, J. R. T. Jussila, Shalimov, S., Marple, S. R., S. Shalimov, Jussila, J. R. T.   +7 more
core   +2 more sources

A superposed epoch analysis of auroral evolution during substorm growth, onset and recovery: open magnetic flux control of substorm intensity [PDF]

, 2009
We perform two superposed epoch analyses of the auroral evolution during substorms using the FUV instrument on the Imager for Magnetopause-to-Aurora Global Explorer ( IMAGE) spacecraft. The larger of the two studies includes nearly 2000 substorms.
Hubert, Benoît, Boakes, PD, Colin Forsyth (7434155), Adrian Grocott (7590026), Forsyth, C., Milan, S.E., B. Hubert (7590023), Grocott, A, Imber, S. M., A. Grocott, Milan, SE, Imber, SM, S. M. Imber, Hubert, B., Boakes, P.D., Milan, S. E., P. D. Boakes, Boakes, P. D., C. Forsyth, Forsyth, C, Steve E. Milan (7589666), S.M. Imber (7592039), Grocott, A., Imber, S.M., S. E. Milan, Peter David Boakes (7591733), B. Hubert, Hubert, B   +27 more
core   +2 more sources

EISCAT/CRRES observations: Nightside ionospheric ion outflow and oxygen-rich substorm injections [PDF]

, 1996
We present combined observations made near midnight by the EISCAT radar, all-sky cameras and the combined released and radiation efects satellite (CRRES) shortly before and during a substorm.
Gazey, N. G. J., Aylward, A. D., Bunting, R., Wilken, B., Perry, C., Gazey, N.G.J., Bunting, R.J., Opgenoorth, H., Lockwood, M., Smith, P., Lockwood M, Coles S, Lockwood, Mike, Aylward AD, Aylward, A.D., Grandé, M., Coles, S., Gazey NGJ, Perry, C.H., Smith PN, Gazey, N., Smith, P. N., M. Grande, M. Gr, N. G. J. Gazey, Grande M, Bunting RJ, H. Opgenoorth, B. Wilken, A. D. Aylward, Smith, P.N., Bunting, R. J., Perry, C. H., Wilken B, M. Lockwood, S. Coles, Opgenoorth H, P. N. Smith, Perry CH, R. J. Bunting, Aylward, A., C. H. Perry   +41 more
core   +2 more sources

Study of the Long-Lasting Daytime Field-Aligned Irregularities in the Low-Latitude F-Region on 13 June 2022

Remote Sensing
The unusual daytime F-region Field-Aligned Irregularities (FAIs) were observed by the HCOPAR and the satellites at low latitudes on 13 June 2022. These irregularities survived from night-time to the following afternoon at 15:00 LT.
Pengfei Hu, Gang Chen, Chunxiao Yan, Shaodong Zhang, Guotao Yang, Qiang Zhang, Wanlin Gong, Zhiqiu He   +7 more
doaj   +1 more source