Arctic methane release due to melting ice is likely to happen again

Exposing the Big Game's avatarThe Extinction Chronicles

https://phys.org/news/2021-03-arctic-methane-due-ice.html

MARCH 22, 2021

byGeological Society of America

Arctic methane release due to melting ice is likely to happen again
Massive lumps of carbonate litter the seafloor where large quantities of methane are leaking from the sediments and rocks below, marking the spot Dessandier and colleagues targeted to drill deep sediment cores. (Scale bar added by GSA.) Credit:G. Panieri.

Beneath the cold, dark depths of the Arctic ocean sit vast reserves of methane. These stores rest in a delicate balance, stable as a solid called methane hydrates, at very specific pressures and temperatures. If that balance gets tipped, the methane can get released into the water above and eventually make its way to the atmosphere. In its gaseous form, methane is one of the most potent greenhouse gases, warming the Earth about 30 times more efficiently than carbon dioxide. Understanding possible sources of atmospheric methane is critical for accurately predicting future climate change.

In the Arctic Ocean today, ice sheets exert…

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