10.18710/MAI7RH Tromsø Geophysical Observatory UiT The Arctic University of Norway DataverseNO 2026 Physics geomagnetism UiT The Arctic University of Norway UiT The Arctic University of Norway UiT The Arctic University of Norway Magnar Gullikstad Johnsen Magnar Gullikstad Johnsen UiT The Arctic University of Norway 2026-01-19 2026-06-09 Geomagnetic observations 10.18710/MAI7RH/XLYV5O 10.18710/MAI7RH/HSOFUR 256787 13434 text/comma-separated-values text/plain 1.0 Creative Commons CC0 1.0 Universal Public Domain Dedication. The 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. Norway, Troms,, Tromsø, 18.9 69.7