Earth Slows Rotation Increasing Day Length
Geophysics researchers at ETH Zurich and the University of Vienna report in Journal of Geophysical Research: Solid Earth that Earth’s rotation slowed, raising day length at about 1.33 milliseconds per century during 2000–2020. The team attributes the change primarily to ocean mass redistribution from polar and glacier melt, inferred from benthic foraminifera sea-level proxies and a physics-informed diffusion model. The trend could affect precise space navigation by late 21st century.
Scoring Rationale
Peer-reviewed, novel attribution using physics-informed ML; limited by paleoclimate proxy uncertainties and long-term extrapolation, requiring cautious interpretation.
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