Fig. 4From: Forecasting yearly geomagnetic variation through sequential estimation of core flow and magnetic diffusionThe RMS error for CHAOS-6 hindcasts at Earth’s surface (a, b) and the CMB (c, d), for hybrid hindcasts with \(N=2\); \(L_u = 8\) (a, c) \(L_u = 14\) (b, d). A comparison to the linear extrapolation of IGRF-11 and a CHAOS-3 forecast are also shownBack to article page