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December 2021 State of the Geomagnetic Field
2021
The performance of the World Magnetic Model 2020 (WMM2020) was assessed by comparing its predictions at 2022.0 with that of a more recent model inferred from data collected by the European Space Agency Swarm satellites until September 2021. For all magnetic field components, the WMM2020 global root-mean-square error increased by less than 1.5% over the past two years and remained well below the maximum error allowed by the U.S. Department of Defense WMM specification. In addition, the WMM2020
doi:10.25923/yetz-e011
fatcat:wzzzbkfda5htleaahqm2xcn6pa