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Earth, Planets and Space
Fig. 9 | Earth, Planets and Space

Fig. 9

From: Geomagnetic Virtual Observatories: monitoring geomagnetic secular variation with the Swarm satellites

Fig. 9

One-monthly Core Field SV GVOs mapped to Earth’s surface (red symbols) with \(\pm \sigma\) uncertainties, and 1-monthly revised monthly means from selected polar ground observatories (black symbols), left column: Resolute Bay (Canada), middle column: Macquarie Island (Australia), right column: Mawson Station (Antarctica). Top row is the radial field component, middle row is the southward field component, bottom row is the eastward field component, units are nT

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