Sentences with phrase «releases ancient carbon»

A University of Alaska Fairbanks - led research project has provided the first modern evidence of a landscape - level permafrost carbon feedback, in which thawing permafrost releases ancient carbon as climate - warming greenhouse gases.

Not exact matches

Samples of ancient carbon deposits from this era show a marked increase in concentrations of carbon - 12 relative to its heavier isotope carbon - 13, indicating a lot of lighter carbon might have been suddenly released at the time.

These ecosystems, primarily the Arctic tundra (5), peatlands (1), and tropical rain forests (6, 7, 8), harbor ancient, highly - concentrated carbon stocks, which are rapidly released during fire events like the one in Indonesia.

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The Great Dying of 252 million years ago began, as it does today, with a great burning and release of ancient carbon.

Hot magma deep within Earth may have heated carbon - rich rocks, releasing methane into the atmosphere and leading to an ancient warming event, scientists suggest.

In contrast, fossil fuels come from ancient photosynthesis, thus the carbon released by burning had been stored for ages and thus represents a net addition into the atmosphere.

Research now shows that Arctic lakes are generally not releasing very much ancient carbon to the atmosphere.