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Table 1 SV coefficients and their uncertainties from our candidate model, based on the instantaneous SV in 2020 issued from the assimilation of COV-OBS and Kalmag in nT/year

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

\(\ell\) m \({\dot{g}}_\ell ^m\) \({\dot{h}}_\ell ^m\) \(\sigma [{\dot{g}}_\ell ^m]\) \(\sigma [{\dot{h}}_\ell ^m]\)
1 0 6.78 0.00 0.86 0.00
1 1 6.55 − 24.29 1.02 1.10
2 0 − 10.87 0.00 0.93 0.00
2 1 − 6.67 − 29.61 0.75 0.72
2 2 − 2.97 − 22.56 0.65 0.62
3 0 1.91 0.00 0.67 0.00
3 1 − 5.79 6.52 0.54 0.59
3 2 2.62 − 0.76 0.47 0.45
3 3 − 12.16 0.55 0.50 0.45
4 0 − 1.39 0.00 0.40 0.00
4 1 − 1.62 − 0.78 0.45 0.45
4 2 − 5.87 6.47 0.41 0.37
4 3 5.30 3.69 0.36 0.32
4 4 − 5.35 − 5.22 0.33 0.35
5 0 − 0.42 0.00 0.31 0.00
5 1 0.41 − 0.18 0.32 0.37
5 2 − 0.33 2.42 0.29 0.30
5 3 0.11 − 0.51 0.29 0.28
5 4 1.52 3.25 0.22 0.22
5 5 1.71 0.40 0.24 0.28
6 0 − 0.61 0.00 0.20 0.00
6 1 − 0.41 − 0.29 0.22 0.22
6 2 0.31 − 1.66 0.23 0.22
6 3 1.45 − 1.09 0.19 0.18
6 4 − 1.28 0.47 0.20 0.20
6 5 − 0.04 0.17 0.16 0.17
6 6 1.17 1.25 0.18 0.19
7 0 − 0.19 0.00 0.12 0.00
7 1 − 0.15 0.49 0.14 0.16
7 2 − 0.04 0.47 0.15 0.14
7 3 0.74 − 0.57 0.15 0.13
7 4 0.17 − 0.19 0.14 0.13
7 5 − 0.66 − 1.09 0.13 0.12
7 6 − 0.80 0.14 0.12 0.11
7 7 0.71 0.19 0.13 0.13
8 0 0.07 0.00 0.09 0.00
8 1 0.32 − 0.43 0.10 0.10
8 2 − 0.13 0.29 0.11 0.10
8 3 0.43 0.00 0.10 0.09
8 4 − 0.23 0.40 0.10 0.10
8 5 0.26 − 0.47 0.08 0.08
8 6 0.17 − 0.30 0.08 0.09
8 7 − 0.09 0.42 0.07 0.07
8 8 0.39 − 0.03 0.08 0.09