10.18710/3KUWBFTromsø Geophysical ObservatoryUiT The Arctic University of NorwayTGO Ramfjordmoen Ionosonde Data April 2021DataverseNO2021Earth and Environmental SciencesPhysicsionodataSUN-EARTH INTERACTIONSionosondeionogramionosphereauroraHall, ChrisChrisHallUiT The Arctic University of NorwayJohnsen, Magnar GulliksenMagnar GulliksenJohnsenUiT The Arctic University of NorwayUiT The Arctic University of NorwayTromsø Geophysical Observatory, UiT The Arctic University of NorwayTromsø Geophysical Observatory, UiT The Arctic University of NorwayUiT The Arctic University of NorwayUiT The Arctic University of Norway2021-05-052021-05-05ionosonde data2154425373768359200text/plainapplication/zipapplication/zip1.0CC0 1.0<p>About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from April 01-30, 2021.</p><p>About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at Ramfjordmoen near Tromsø, Norway and operated by the Auroral Observatory of the University of Tromsø and later on, in collaboration with QinetiQ. The Lowell ionosonde replaced the Auroral Observatory unit in 1992; see the related publication for details.</p>Tromsø Geophysical Observatory's Ramfjordmoen field station19.21666719.21666769.58333369.583333