Greenland ice sheet may melt completely with 1.6 degrees of global warming

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ScienceDaily: Oceanography News


First consumption of abundant life form, Archaea, discovered

Posted: 12 Mar 2012 11:03 AM PDT

Scientists have documented for the first time that animals can and do consume Archaea – a type of single-celled microorganism thought to be among the most abundant life forms on Earth. Archaea that consume the greenhouse gas methane were in turn eaten by worms living at deep-sea cold seeps off Costa Rica and the West Coast of the United States.

Greenland ice sheet may melt completely with 1.6 degrees of global warming

Posted: 11 Mar 2012 09:32 PM PDT

The Greenland ice sheet is likely to be more vulnerable to global warming than previously thought. The temperature threshold for melting the ice sheet completely is in the range of 0.8 to 3.2 degrees Celsius of global warming, with a best estimate of 1.6 degrees above pre-industrial levels, shows a new study.

Sea ice drives arctic air pollutants, NASA finds

Posted: 01 Mar 2012 08:11 AM PST

Drastic reductions in Arctic sea ice in the last decade may be intensifying the chemical release of bromine into the atmosphere, resulting in ground-level ozone depletion and the deposit of toxic mercury in the Arctic, according to a new NASA-led study.
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