<div><a href="http://www.noaanews.noaa.gov/stories2008/20080522_oceanacid.html">http://www.noaanews.noaa.gov/stories2008/20080522_oceanacid.html</a></div>
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<div>May 22, 2008</div>
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<p>Evidence of corrosive water caused by the ocean's absorption of carbon dioxide (CO<sub>2</sub>) was found less than 20 miles off the west coast of North America during a field study from Canada to Mexico last summer. This was the first time "acidified" ocean water has been found on the continental shelf of western North America. </p>
<p>The term "ocean acidification" describes the process of ocean water becoming corrosive as a result of carbon dioxide being absorbed from the atmosphere.</p>
<p>"Acidification of the Earth's ocean water could have far-reaching impacts on the health of our near-shore environment, and on the sustainability of ecosystems that support human populations through nourishment and jobs," said Richard W. Spinrad, NOAA assistant administrator for oceanic and atmospheric research. "This research is vital to understanding the processes within the ocean, as well as the consequences of a carbon-rich atmosphere." </p>
<p>The findings will be published May 22 in the online journal <em>Science Express</em>. "Evidence for Upwelling of Corrosive 'Acidified' Water onto the Continental Shelf" was written by Richard A. Feely and Christopher Sabine, both oceanographers at <a href="http://www.pmel.noaa.gov/">NOAA's Pacific Marine Environmental Laboratory</a> in Seattle, Wash. Their co-authors are J. Martin Hernandez-Ayon of the Instituto de Investigaciones Oceanologicas from the University of Baja California, Mexico; Debby Ianson of Fisheries and Oceans Canada in Sidney, British Columbia, and Burke Hales, of Oregon State University College of Oceanic and Atmospheric Sciences, Corvallis, Ore. </p>
<p>"Our findings represent the first evidence that a large section of the North American continental shelf is seasonally impacted by ocean acidification," said Feely. "This means that ocean acidification may be seriously impacting marine life on our continental shelf right now." </p>
<p>"While this absorption provides a great service to humans by significantly reducing the amount of greenhouse gases in the atmosphere and decreasing the effects of global warming, the change in the ocean chemistry affects marine life, particularly organisms with calcium carbonate shells, such as corals, mussels, mollusks, and small creatures in the early stages of the food chain," said Feely.</p>
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<p>"We did not expect to see this extent of ocean acidification until the middle to the end of the century," said Sabine. "Because of this effort, we have a baseline for future observations as we continue to study and monitor the relationship of biological and physical processes and their ability to respond to ocean acidification." </p>
<p>"When the upwelled water was last at the surface, it was exposed to an atmosphere with much less CO<sub>2</sub> than today and future upwelled waters will probably be more acidic than today's because of increasing atmospheric CO<sub>2</sub>," said Hales, a professor of chemical oceanography, who is also funded by NASA. </p>
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<p>Vision2020 Post:Ted Moffett</p></div>