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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Predictions of the geomagnetic secular variation based on the ensemble sequential assimilation of geomagnetic field models by dynamo simulations

Fig. 4

Comparison of the a axial dipole \({g}_1^0\) and b \(h_5^3\) coefficients and their respective SV c \({\dot{g}}_1^0\) and d \({\dot{h}}_5^3\) between an assimilation hindcast with \(t_i=2015\) and \(t_f=2020\) (black solid curve), the Kalmag model (blue curve), CHAOS-7 (red curve) and IGRF-12 (green star). The shaded areas represent the standard deviation of the assimilation and Kalmag model. Also shown in a and b are predictions based on the linear extrapolation (LP) of the coefficients using SV in 2015 from the assimilation (dashed black line), CHAOS-7 (dashed red) and IGRF (dashed green)

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