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butthurt writes:

NOAA, The National Oceanic and Atmospheric Administration, reports [*] on the discovery, published in Nature Climate Change (full article is pay-walled):

[...] that between the 1990s and 2010, acidified waters expanded northward approximately 300 nautical miles from the Chukchi Sea slope off the coast of northwestern Alaska to just below the North Pole. Also, the depth of acidified waters increased from approximately 325 feet below the surface to more than 800 feet.

The United Nations Development Programme explains that

[...] since gases such as CO₂ dissolve more readily in colder water, ocean acidification will progress – already is progressing – much more rapidly in the Arctic and Antarctic, where a number of species are already facing challenges in fixing their shells. Under a lower pH ocean future, increasing numbers of calcium carbonate fixing organisms could face dramatic losses or even extinction.

[*] (archive link 1, archive link 2)

Additional coverage:

• The Canadian Press via the Toronto Star
• The Canadian Press via the Chronicle Herald (identical to story in Toronto Star)
• Eurekalert
• University of Delaware UDaily
• Tech Times

Original Submission