Daily Sum of Absolute Horizontal Storminess and Range Intensity for Tromsø 1930-1965https://doi.org/10.18710/MAI7RHTromsø Geophysical ObservatoryDataverseNO2026-06-092026-06-09T09:37:30ZThe dataset contains daily sums of absolute horizontal storminess and range intensity derived from magnetic observations made at the Auroral Observatory of Tromsø over the years 1930 to 1965.PhysicsgeomagnetismEnglish2026-06-09Dahlmo Løkke, Andrea2026-01-1919301965Geomagnetic observations<p> Derived parameters such as Absolute Horizontal Storminess (AS) and Range Intensity (RI), were published in yearly reports by the Norwegian Institute of Cosmic Physics (NICP), available on the TGO website: https://www.tgo.uit.no/ScanRap/GeoPhysRap.html : </p> <p> Norwegian Institute for Cosmic Physics: The auroral observatory at Tromsø – observations 1930–1963, Publikasjoner fra Det norske institutt for kosmisk fysikk, no. 2–54, 1933–1965. </p> <p>The Magnetic Bureau and the Auroral Observatory originally were sections of the Norwegian Institute of Cosmical Physics (NIKF) established in 1928. Magnetic Bureau was incorporated into the Geophysical Institute at the University of Bergen (UiB) in 1960. NIKF was merged with the University of Tromsø in 1972, where the the Auroral Observatory continued in name and as a dedicated "observatory responsibility". In 1998 the Auroral Observatory took over the Dombås Magnetic Observatory, and thus the remains of the Magnetic Bureau ceased to exist at UiB. Archives and data were later transferred to Tromsø. Effective 1. January 2000 the Auroral Observatory was separated from the Department of Physics and established as a unit directly under the Faculty of Science and Mathematics and given the name 'Tromsø Geophysical Observatory' (TGO).</p> <p> For more details, see accompanying ReadMe file. </p>TromsTromsøNorwayCC0 1.0