A critical review and presentation of the complete, historic series of <i>K</i> indices as determined at Norwegian magnetic observatories since 1939

<p>The complete existing time series of <span class="inline-formula"><i>K</i></span> indices from Norwegian observatories in Tromsø (TRO), Dombås (DOB) and Bear Island (BJN) has been digitized. The digitized time series are continuous, spanning from 1939 (DOB)...

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Bibliographic Details
Main Authors: I. Frøystein, M. G. Johnsen
Format: Article
Language:English
Published: Copernicus Publications 2025-05-01
Series:Annales Geophysicae
Online Access:https://angeo.copernicus.org/articles/43/241/2025/angeo-43-241-2025.pdf
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