Sodankylä ionospheric tomography data set 2003-2014Norberg, Johannes; Roininen, Lassi; Kero, Antti; Raita, Tero; Ulich, Thomas; Markkanen, Markku; Juusola, Liisa; Kauristie, KirstiGeoscientific Instrumentation, Methods and Data Systems2016 / p. 263 - 270 https://doi.org/10.5194/gi-5-263-2016 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Time-varying ionosonde trend : case study of Sodankylä hmF2 data 1957-2014Roininen, Lassi; Laine, Marko; Ulich, ThomasJournal of geophysical research. Space physics2015 / p. 6851-6859 : ill https://doi.org/10.1002/2015JA021176 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS