Fig. 4From: A model of Earth’s magnetic field derived from 2 years of Swarm satellite constellation dataScalar magnetic field due to ionospheric currents, in dependence on QD latitude and magnetic local time (MLT, in hours) for the Northern (left) and Southern (right) polar regions as given by the potential \(V_\mathrm{MLT}\) of Eq. 2. Low-latitude boundary is at \({\pm } 60^\circ \) Back to article page