Fig. 8From: A comprehensive model of Earth’s magnetic field determined from 4 years of Swarm satellite observationsTop: Map of the CIY4 lithospheric field vertical component Z at Earth’s surface (ellipsoid WGS84), for SH degrees \(n=16{-}100\) at epoch 2015.0. Bottom: difference between CIY4 lithospheric field and the LCS-1 model over the same degree range and at the same epoch as above. Red curves represent QD latitudes of \(\pm\, 55^\circ\) and \(0^\circ\)Back to article page