Before 25th April 2019 the measurements at Kiruna were performed using a single-frequency riometers at 30 and 38.2 MHz.
From 25th April 2019 the presented frequencies, 30 and 38 MHz, are extracted from the data from Wideband Spectral Riometer. The riometer itself has been situated at Kiruna.
Since June 30th 2022, the Wideband Spectral Riometer is located at Tjautjas, near Gällivare.
Quiet day curve is generated according to this algorithm
Measurements at 38.2 MHz are performed by a single-frequency riometer.
Contact Tima Sergienko for spectrum data. Magnetometer recordings Log book Tjautjas Log book Lycksele
Responsible scientist: Tima Sergienko (tima.sergienko*irf.se)
Responsible engineer: Daria Mikhaylova (daria.mikhaylova*irf.se)
Responsible for web pages: Mats Luspa (matsl*irf.se)
Page started by Assar Westman 15 January 1996