In recent years a new problem has emerged that few saw coming: Earth's rotation has been speeding up, overtaking atomic time. — vjanez/Getty Images/ETX Studio picLONDON, March 28 — Struggle to wrap your head around daylight savings? Spare a thought for the world’s timekeepers, who are trying to work out how climate change is affecting Earth’s rotation — and in turn, how we keep track of time.
But sailors, who still relied on the Sun and stars for navigation, and others wanted to retain the connection between Earth’s rotation and time. But in recent years a new problem has emerged that few saw coming: Earth’s rotation has been speeding up, overtaking atomic time. Partly using satellite data, Agnew looked at the rate of the Earth’s rotation and the effect of its slowing core for the new study published in the journal Nature.
“When the ice melts, the water spreads out over the whole ocean; this increases the moment of inertia, which slows the Earth down,” Agnew said.
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