Atlantic Ocean currents could be behind global warming 'slowdown'

Atlantic Ocean currents could be behind global warming 'slowdown'
(Image credit: Twitter.com/BBCWorld)

A new theory says that a 30-year cycle in the Atlantic Ocean is the reason why global temperatures are not rising as sharply as before, despite increasing levels of CO2 in the atmosphere.

The researchers used devices called Argo floats to sample oceans down to 2,000 meters. "The floats have been very revealing to us," Tung told the BBC. "I think the consensus at this point is that below 700 meters in the Atlantic and Southern oceans [they are] storing heat and not the Pacific."

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Tung believes this will likely continue for another decade or so, "as global warming itself is melting more ice and ice could flood the North Atlantic. But historically we are in the middle of the cycle." Between 1951 and 2012, global average temperatures rose 0.12 degrees Celsius each decade, according to the Intergovernmental Panel on Climate Change (IPCC); between 1998 and 2012 that rate dropped to 0.05 degrees C per decade.

Read more about this theory at the BBC.

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Catherine Garcia, The Week US

Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.