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Less ice means more seal strandings
2013-07-24 17:44:00| Climate Ark Climate Change & Global Warming Newsfeed
LiveScience: Harp seals mate and rear their young on the sea ice off the east coast of Canada in the spring and move north as the weather warms. But increasing numbers of seals are ending up stranded along the U.S. East Coast, as far south as the Carolinas, far away from where they should be at this time of year. As ice levels in the North Atlantic have declined, the number of seals that have wound up on beaches, either dead or in poor health, has increased, new research shows. The study, published this...
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Ice free Arctic in two years heralds methane catastrophe - scientist
2013-07-24 16:58:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: A new paper in the journal Nature argues that the release of a 50 Gigatonne (Gt) methane pulse from thawing Arctic permafrost could destabilise the climate system and trigger costs as high as the value of the entire world's GDP. The East Siberian Arctic Shelf's (ESAS) reservoir of methane gas hydrates could be released slowly over 50 years or "catastrophically fast" in a matter of decades if not even one decade the researchers said. Not everyone agrees that the paper's scenario of a catastrophic...
Melting Sea Ice Causing Decline in Harp Seal Populations
2013-07-23 01:02:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World News: Warming temperatures in the North Atlantic Ocean have lead to a decline in sea ice, which is leaving populations of young harp seals dead in the water, according to researchers at Duke University. "Stranding rates for the region's adult seals have generally not gone up as sea ice cover has declined; it's the young-of-the-year animals who are stranding," said David Johnston, a research scientist at Duke's Nicholas School of the Environment, of the pups not even a year old. "And it's not just...
How stable is the East Antarctica ice sheet?
2013-07-22 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Summit Voice: The biggest ice sheet in the world may be more susceptible to a warming climate than previously believed. New evidence garnered from mud deposits suggests that the East Antarctica Ice Sheet may have experiences significant melting about 5 million years ago enough to raise sea level by about 60 feet worldwide, according to researchers from Imperial College London. The study, published last week in the journal Nature Geoscience, shows that there was repeated melting between five and three million...
East Antarctica's ice sheet not as stable as thought
2013-07-22 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceNOW: Earth continues to hit temperature and greenhouse gas milestonesjust a couple of months ago, multiple stations measured carbon dioxide concentrations in the atmosphere of 400 parts per million, the highest in several million years. Many studies have tried to estimate how much and how rapidly the two great ice sheets covering Greenland and Antarctica might meltand the one reassuring point has been the apparent relative stability of the eastern (and, by far, larger) half of the Antarctic Ice Sheet....
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