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How Melting Arctic Glaciers Is Creating a Climate ‘Doom Loop’
Melting Arctic glaciers are releasing ancient methane from rocks beneath the ice, creating a climate 'doom loop' according to new research.
Meltwater rivers from Svalbard glaciers carry methane from sub-ice or subglacial rocks into the air.
Researchers collected 148 water samples from 19 glacier-fed rivers in central Svalbard, providing the most extensive data on methane in glacier meltwater there.
The study found methane mostly originates from Svalbard's geology rather than microbes under the ice, with estimates that Svalbard's glaciers transport 182 to 368 metric tons of methane yearly in meltwater.