Issue
J. Space Weather Space Clim.
Volume 15, 2025
Topical Issue - Severe space weather events of May 2024 and their impacts
Article Number 43
Number of page(s) 22
DOI https://doi.org/10.1051/swsc/2025037
Published online 22 September 2025

Supplementary material

S1: Model of geoelectric field 10–12 May 2024: Model of geoelectric field 10–12 May 2024.mp4 movie shows geoelectric fields mapped across North America for 10–12 May 2024. The maximum calculated electric field and the number of contributing magnetic observatories at each time step are indicated in the top right and the bottom right of each frame, respectively. Geoelectric fields were calculated from interpolated NRCan and USGS magnetic field measurements combined with regional conductivity models for geologically distinct regions across North America.

S2: Propagation of CMEs through the background solar wind in interplanetary space: CME-Simulations-Velocity-XY.mp4 movie shows the solar wind speed in the XY plane (HEEQ coordinate system) of the interplanetary space during 06–14 May. 9 CMEs from 08–11 May (Table 2) were used in the simulations. Earth is located close to the right edge of the simulation domain. The solar wind speed scale is saturated at 700 km/s.

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© R. Fiori et al., Published by EDP Sciences 2025

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