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Earth's Core Flow Reversed 2010, Weakens Post-2020, Study Warns

5/27/2026

Summary

Story summary

Earth's outer core flow reversed from westward to eastward in 2010 in the United States' Pacific Ocean region, then weakened after 2020, 5 percent of flow.
Frederik Dahl Madsen (University of Edinburgh) analyzed data from Swarm, CryoSat, CHAMP, Ørsted (1997-2025), publishing in Journal of Earth's Deep Interior.
ESA scientists Elisabetta Iorfida and Anja Stromme said the reversal coincided with a 2017 jerk and urged monitoring because it can affect magnetic field.

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Story summary

Earth's outer core flow reversed from westward to eastward in 2010 in the United States' Pacific Ocean region, then weakened after 2020, 5 percent of flow.
Frederik Dahl Madsen (University of Edinburgh) analyzed data from Swarm, CryoSat, CHAMP, Ørsted (1997-2025), publishing in Journal of Earth's Deep Interior.
ESA scientists Elisabetta Iorfida and Anja Stromme said the reversal coincided with a 2017 jerk and urged monitoring because it can affect magnetic field.