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Volcanos and global warming Print E-mail
Written by Peter Jackson, World Magazine   
Monday, 30 June 2008
 

Carbon emissions may be melting the arctic sea ice, but probably not from humans: ScienceDaily.com reports“evidence of explosive volcanic eruptions deep beneath the ice-covered surface of the Arctic Ocean.”  Volcanoes release “tremendous” blasts of carbon dioxide—and immense heat.

Twenty-two researchers from nine institutions and four countries collaborated on the report, published in the academic Nature journal’s June issue.   “The generation of magmas in the earth proved far more complicated than anyone imagined,” wrote Henry J. B. Dick, a senior scientist at the Woods Hole Oceanographic Institution (WHOI), which fronted the report.  Researchers found volcanoes “as far as we could survey to the east,” samples of “abundant active hydrothermal venting in a region where current theory predicted their absence.”

The report coincides with recent media buzz about a comment from Dr. Mark Serreze of the US National Snow and Ice Data Center.  “I’d say it’s even-odds whether the [magnetic] North Pole melts out,” Serreze told Independent science editor Steve Connor.  The resulting article ran under the headline, “Exclusive: No ice at North Pole,” presenting the “unthinkable” disappearance of ice as “one example of the impact of global warming on the planet.”

It really is a problem, insists Andy Revkin, who keeps an environmentalist blog for the New York Times.  And it really is global warming, not volcanoes: “Keep in mind it’s two miles below the sea ice,” Revkin said in response to the reports of volcanoes along Gakkel ridge, “with thick intervening layers of water that don’t exchange much heat.”  ABC News thinks differently of water, apparently. “Less sea ice means more dark open water to absorb the heat, which melts the sea ice even further,”one article noted, declaring that the whole Arctic could experience it’s “First Ice-Free Summer This Year.”

Alaskans might be glad to hear that news.  “Unless you’re packing an auger, stay away from Rabbit Lake,” quipped the Anchorage Daily News on Thursday.  Two hikers found the northern lake, which is usually ice-free by late spring, was still iced over this week.  “This hasn’t been a normal spring,” wrote the Daily News.  “Anchorage’s official temperature has yet to hit 70 degrees in 2008.” Source

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