Geomagnetic Field, Impedance Tensor and Hall Prode GIC data from 2024-04-23 in AB, Canada

This data product consists of magnetic field, impedance and geomagnetically induced current (GIC) data. This data was analyzed and presented in the paper "The influence of 3-D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC risk." See Parry et al., 2025 (Space Weather). Magnetic Data (Magnetic_Data.zip): Includes geomagnetic data from April 24, 2023, from three CARISMA magnetometer stations in Alberta, Canada: Fort Chipewyan (FCHP), Fort MacMurray (MCMU), and Ministik Lake (MSTK). Also included is the geomagnetic data from November 4th, 2021, at MSTK used in the supporting information of the paper. Raw data are from CARISMA (www.carisma.ca) Magnetotelluric Data (MT_Data.zip): Includes magnetotelluric data collected by Martyn Unsworth's group at the University of Alberta over the last 20 years, as well as some older LITHOPROBE sites(AB_BC_MT_DATA_526_sites_230321.mat). Similar versions of this dataset were previously published at: https://doi.org/10.5281/zenodo.10594300. Mat files for the impedance tenors at three particular MT stations (abt500, abt272, and nab944RR940) are also included. GIC Data (20230424_hallprobe_data.mat): The GIC data file includes the UT time (GMT+6 = Mountain Daylight Time) and the transformer neutral-to-ground current data measured at two substations in central Alberta on 2023-04-24. See Parry et al., 2025 (Space Weather), for more details.