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Global ionospheric electron density variations observed by F7/C2 and $\Sigma \mathrm{O}/\mathrm{N}_{2}$ ratios measured by GUVI during intense geomagnetic storms in solar cycle 25

Crossref DOI link: https://doi.org/10.1007/s10509-026-04559-3

Published Online: 2026-03-09

Published Print: 2026-03

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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