Science of Global Warming, Climate Change

Huge Methane Leak from Arctic Seabed and Permafrost Melting

 

A significant measurement with disturbing potential climate consequences has recently been announced. The measurement shows that a huge amount of methane is leaking from the Arctic seabed, coming up through melting permafrost. Methane is a greenhouse gas enormously more powerful than carbon dioxide. HERE and HERE is further commentary. Here is a video from University of Alaska Fairbanks scientist Natalia Shakhova explaining the situation. The above graphic is from the National Science Foundation.

 

 

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HERE is a new article on the subject, also found in the Arctic Portal:

Shock as retreat of Arctic sea ice releases deadly greenhouse gas

Russian research team astonished after finding 'fountains' of methane bubbling to surface.

Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region.

Dr Semiletov's team published a study in 2010 estimating that the methane emissions from this region were about eight million tonnes a year, but the latest expedition suggests this is a significant underestimate of the phenomenon.

This is the graphic:

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More generally, permafrost melting is one of the most problematic aspects of global warming. Triggered by human-caused global warming due to greenhouse gases under a business-as-usual scenario, permafrost melting can eventually be triggered as a RUN-AWAY effect, impossible to stop, producing out-of-control global warming, with disastrous consequences for humanity. HERE is a video explaining this:

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Glossary

Citation

Dash, J. (2013). Huge Methane Leak from Arctic Seabed and Permafrost Melting. Retrieved from http://climate.uu-uno.org/view/article/144494

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