I blog about environmental and social justice issues because I am very concerned about the health of the interdependent web of life of which we are a part.

Melting Arctic ice.......beautiful and frightening!

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Friday, January 18, 2013

Ocean Acidity

Line graphs showing levels of dissolved carbon dioxide and pH measurements at three ocean stations from 1983 to 2011.

This figure shows the relationship between changes in ocean carbon dioxide levels (measured in the left column as a partial pressure—a common way of measuring the amount of a gas) and acidity (measured as pH in the right column). The data come from two observation stations in the North Atlantic Ocean (Canary Islands and Bermuda) and one in the Pacific (Hawaii). The up-and-down pattern shows the influence of seasonal variations.
More proof that we're harming ourselves by not reducing greenhouse gas emissions.  Think it doesn't matter?  It does to these folks:

For four frustrating months in 2007, Mark Wiegardt and his wife, Sue Cudd, witnessed something unsettling at their Oregon oyster hatchery: tank bottoms littered with dead baby oysters...It turned out that "corrosive" seawater, which makes it harder for young oysters to build shells, was largely to blame. Like the atmosphere, the world's seas are burdened by our fossil fuel use and deforestation. The ocean has sponged up a quarter of the carbon dioxide humans have produced since the Industrial Revolution, steadily lowering its pH. Today's seas are 30 percent more acidic than their pre-industrial ancestors. http://www.hcn.org/issues/44.21/can-the-oyster-industry-survive-ocean-acidification/article_view?b_start:int=1

How  much proof do we need before denial cracks and we actually do something?    

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