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Siberia Seabed Leaks Methane, Threatens Climate, Scientists Say (Alex Morales)

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global-warming-160March 4 (Bloomberg) -- The Arctic Ocean seabed off eastern Siberia has destabilized and is leaking methane, threatening to add to global warming, scientists in Russia, the U.S. and Sweden said today.

About 8 teragrams (8 million metric tons) of the greenhouse gas is leaking yearly from the East Siberian Arctic Shelf, the researchers said in a study in the journal Science. That’s as much as is emitted from the rest of the oceans, they said.

Methane leaks are important to scientists studying climate change because it is 25 times more potent than carbon dioxide as a global warming gas. While the researchers said the leakage doesn’t “alarmingly” alter estimates for global emissions, it may be a precursor to larger venting of the gas.

“Subsea permafrost is losing its ability to be an impermeable cap,” said Natalia Shakhova, a scientist at the University of Alaska Fairbanks who led the research. “If it further destabilizes, the methane emissions may not be teragrams, it would be significantly larger.”

READ MORE: Bloomberg

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  • Created
    Friday, March 05 2010
  • Last modified
    Wednesday, November 06 2013
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