Tag: arctic
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Permafrost that lives up to its name
Ancient Canadian ice survived previous warm periods. A 740,000-year-old wedge of ice discovered in central Yukon Territory, Canada, is the oldest known ice in North America. It suggests that permafrost has survived climates warmer than today’s, according to a new study. “Previously, it was thought that the permafrost had completely disappeared from the interior about…
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Arctic radio
Free Radicals When the CCGS Amundsen, a Canadian research ice breaker, left its home port of Quebec City in July 2007, it embarked upon a historic 15-month expedition that would have it travel across the Arctic and overwinter in the Beaufort Sea. The scientists on board the Amundsen might spend their days hunting for ice…
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Rapid Ice Retreat Threatens Arctic Interior
Nature Reports: Climate Change The rapid decline of sea ice could accelerate inland warming over the Arctic region, radically transforming the landscape. One of the Northern Hemisphere’s natural cycles is the expansion and contraction of the floating Arctic ice cap. Typically, sea ice decreases during the Arctic summer, reaching a low in September, before recovering…