Fig. 4.From: Prediction of geomagnetic field with data assimilation: a candidate secular variation model for IGRF-11Rms spectra of 2005 field and the prediction differences. The solid line is the CHAOS-2s 2005 field (observation). The rest are the forecast errors of IGRF-8 (dotted line with upward triangles), IGRF-9 (dotted line with stars), MoSST-DAS UAF (dashed line with diamonds), and MoSST-DAS CAF (dashed line with circles).Back to article page