Subset of the 1 minute cosmic noise absorption data from the LaJolla riometers of the Finnish Riometer Network operated by Sodankylä Geophysical Observatory, University of Oulu. The used quiet day curve for absorption determination is visually inspected in sidereal time plots from quiet period of early May 2024. The files are one file per station in ASCII format having 1440 minute values per day starting from 00:00UT. The missing values are reported as NaN. The station code is in filename suffix of file name and the date is given in name file. The riometer instruments used in this data set are La Jolla narrowband riometers in different frequencies. S05 (SOD, 67.42°N 26.39°E) and IVA (68.55°N 27.28°E) operated in 30.0MHz and ROV (66.78°N 25.94°E) at 32.4MHz. The used riometer receiver antenna type was dual parallel half-wavelength dipole forming a theoretical 60 degree beam pointing to zenith. The data is used in the paper " Global Response of the MLT and Topside Ionospheric Electron Temperatures to the “Extreme” Geomagnetic Storm of 10-13 May 2024" submitted to JGR: Space Physics by Parihar et al. (2025JA034169 ).

2025