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News Link • Geography

As Magnetic North Pole Zooms Toward Siberia, Scientists Update World Magnetic Model

• arclein

As a result of those changes, the accuracy of the National Oceanic and Atmospheric Administration's World Magnetic Model (WMM) - a mathematical representation of the magnetic field - slowly deteriorates in the five-year periods between updates. The next update was due in 2020. But "unplanned variations" have degraded the quality of the WMM so greatly that NOAA published an out-of-cycle update Monday. It was delayed from January by the partial government shutdown.

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