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Fig. 9 | Earth, Planets and Space

Fig. 9

From: Applications for CryoSat-2 satellite magnetic data in studies of Earth’s core field variations

Fig. 9

Time-longitude plots of the SA along the geographical equator at the CMB. Left column: SOLA radial field SA estimates derived from differences between consecutive SOLA SV estimates based on 2-year data windows moving in 2-month steps and using \(\lambda =3 \times 10^{-2}\ \mathrm{nT}^{-1}\) (top left), and \(\lambda =1 \times 10^{-2}\ \mathrm{nT}^{-1}\) (bottom left). Right column: SA predictions from the CHAOS-7.2 model for SH degrees up to 8 (top right) and 10 (bottom right); note that temporal regularization causes significant time-averaging of the high-degree SA in the CHAOS model

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