Scientists just measured a rapid growth in acidity in the Arctic ocean, linked to climate change

Scientists just measured a rapid growth in acidity in the Arctic ocean, linked to climate change

SOURCE: Washington Post DATE: February 27, 2017 SNIP: The Arctic is suffering so many consequences related to climate change, it’s hard to know where to begin anymore. It’s warming more rapidly than almost any other part of the planet; its glaciers are melting and its sea ice is retreating; and its most iconic wildlife, including polar bears and walruses, are suffering. But that’s not all — a new study, just out Monday in the journal Nature Climate Change, indicates that the Arctic Ocean is also becoming more acidic, another consequence caused by greenhouse gases in the atmosphere. It’s a process that occurs when carbon dioxide dissolves out of the air and into the sea, lowering the water’s pH in the process. Scientists believe acidification is occurring at varying rates all over the world. But this week’s study gives researchers renewed cause to worry about the Arctic, suggesting that a large — and increasing — swath of the ocean may have reached a level that’s dangerous for some marine...
Florida Reefs Are Dissolving Much Sooner Than Expected

Florida Reefs Are Dissolving Much Sooner Than Expected

SOURCE: Climate Central DATE: May 3, 2016 AUTHOR: Brian Kahn SNIP: It wasn’t supposed to happen this fast. Some of the reefs around the Florida Keys are dissolving. They may have crossed a tipping point due to increasing ocean acidification, raising the alarm that climate change impacts in the ocean are continuing to happen at a much quicker pace than scientists previously suspected. Rising carbon dioxide levels in the atmosphere are making seas more acidic. That makes it harder for coral to build up their skeletons. Scientists expected that the rising tide of acidic waters would cross a tipping point and start dissolving reefs by mid-century. But some of Florida’s reefs appear to be getting a head start, according to research published in Global Biogeochemical Cycles on Monday. Scientists sampled seven sites across the 300-mile stretch of reefs stretching from Miami south to Key West. The findings show that the northern stretches of the reefs and their limestone bases are already...