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Earth, Planets and Space

Table 3 The normalized secular variation misfit \(\mathcal {J}_{\text {sv}}\) obtained for different combinations of parameters during the initialization process

From: A candidate secular variation model for IGRF-12 based on Swarm data and inverse geodynamo modelling

Inflation factor β

Crustal covariance C c

\(\mathcal {J}_{\text {sv}}\)

3.8

yes

2.42

95.7

yes

0.99

95.7

no

1.18

383.0

yes

0.77

2393.5

yes

0.66

  1. The first column reports the value of the inflation factor β. The crustal covariance C c column indicates whether that matrix is incorporated into the analysis. See text for details
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