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Climate change hits carbon 'sink'

Author: Clive Cookson

Source: Financial Times

Publication Date: 18th May 2007

Recent climate change has weakened one of the earth's most important natural carbon "sinks", according to a four-year international study published today.

An increase in winds over the southern ocean, caused by man-made global warming and ozone depletion, has led to a release of stored carbon dioxide from the ocean into the atmosphere and is preventing further absorption of the greenhouse gas.

The study was undertaken by the University of East Anglia, British Antarctic Survey and the Max-Planck Institute for Biogeochemistry in Germany and is published in the online edition of the journal Science. It suggests stabilising carbon dioxide levels in the atmosphere will be even more difficult than previously believed.

To make matters worse, acidification of the southern ocean as a result of dissolved carbon dioxide is likely to reach dangerous levels before the projected date of 2050.

Corinne Le Quéré, the study leader, said: "This is the first time that we've been able to say climate change itself is responsible for the saturation of the southern ocean sink. This is serious. All climate models predict that this kind of 'feedback' will continue and intensify during this century."

Added to the database on 22nd May 2007

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Keywords: climate change, carbon


 
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