Monday, August 26, 2013

Climate Change: Ocean Acidification Amplifies Global Warming

Observations of reduced DMS concentration with decreasing seawater pH from different mesocosm experiments. (Image courtesy of Max Planck Institute for Meteorology)
Scientists have demonstrated that ocean acidification may amplify global warming through the biogenic production of the marine sulfur component dimethylsulphide (DMS).  Ocean acidification has the potential to speed up global warming considerably, according to new research.

Marine emissions of DMS are the largest natural source of atmospheric sulfur, and those sulfur aerosols play an important role in reflecting the sun’s energy back into space and cooling the planet.  Reporting in the journal Nature Climate Change, the scientists found that when they created acidic conditions in the seawater enclosures that match pH levels expected in 2100, emissions of DMS fell by roughly 18 percent.  The scientists said that their study was the first to prove the link between rising ocean acidification and the potential decrease in planet-cooling sulfur dioxide aerosols.

Climate Change: Ocean Acidification Amplifies Global Warming

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