The impact of climate change has been felt across the globe in rising temperatures and rising sea levels — but a new study suggests global warming has accelerated the Earth’s rotation, affecting the way we measure time.
However, for the first time, UTC may have to lose a second in what would be called a “negative leap second,” according to a study from the Scripps Institution of Oceanography at the University of California San Diego, published Wednesday in Nature. “Earth’s rotation seems to have accelerated, outpacing the time standard, and raising the possibility that an unprecedented ‘negative’ leap second might soon be required — a daunting prospect in a world reliant on consistent timekeeping,” Tavella wrote in an article accompanying the study in Nature.
The delay of the negative leap second comes from the acceleration of melting polar ice in Greenland and Antarctica, which is measured by satellite gravity, according to the study. To put it simply, global warming has accelerated the Earth’s rotation, forcing global timekeeping to adjust. In 2022, scientists and government representatives voted to remove leap seconds from UTC by 2035 at an International Bureau of Weights and Measures conference in France.
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