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Arctic on course for ice-free summer 'within decades', scientists say
2013-09-20 22:30:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: The Arctic is on course for an ice-free summer within the next few decades, as scientist on Friday declared that sea ice in the region had fallen to one of the lowest annual minimums on record. On 13 September, the expanse of frozen water in the Arctic fell to 5.10 million square kilometres (1.97 million square miles), the sixth-lowest such measurement on record, the National Snow and Ice Data Center (NSIDC) said in a statement. The annual minimum was not as extreme as the collapse of sea ice...
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summer
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Glacier National Park Prepares for Ice-Free Future
2013-09-10 08:44:00| Climate Ark Climate Change & Global Warming Newsfeed
National Geographic: Our hike up to Grinnell Glacier in Glacier National Park winds through alpine meadows, along the edge of ice-cut cliffs, up a waterfall staircase, and around a stubborn ram. The views are breathtaking in the most literal sense of that word. The three lakes filling the valley below us are an impossible blue. As the trail cuts back and forth, we catch glimpses of Grinnells steel white face. And then finally, were there, standing at the edge of a giant ice bath as two young boys skip rocks across...
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future
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national park
NASA image shows nearly ice-free Alaska as temps top 96 degrees
2013-06-24 23:43:00| Climate Ark Climate Change & Global Warming Newsfeed
Mongabay: After a colder-than-average spring, Alaska is suffering a sudden and record-breaking heatwave. Temperatures on Monday, June 17th hit a stunning 96 degrees Fahrenheit (35 degrees Celsius) in Talkeetna, Alaska, just below the state's highest temperature ever record of 98 degrees Fahrenheit in 1969. On the same day, NASA's Terra Satellite's Moderate Resolution Imaging Spectroradiometer (MODIS) took a rare image of a cloud-free Alaska. "Other towns in southern [besides Talkeetna] Alaska set all-time...
This is what an ice-free Antarctica looks like
2013-06-06 12:13:00| Climate Ark Climate Change & Global Warming Newsfeed
Grist: Check out the most detailed map of a continent never truly seen by human eyes: the de-iced surface of Antarctica. By virtually peeling back the frozen ice sheet and studying the land beneath, researchers can get a better sense of how the southern pole of our planet could react to climate change. Bedmap2 was created by the British Antarctic Survey, and used decades of data to produce this detailed view of the frozen continent. NASAs contribution to the dataset includes surface measurements from...
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looks
antarctica
icefree
Ice-free arctic in Pliocene, last time CO2 levels above 400 ppm
2013-05-11 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
ClimateWire: Scientists trying to determine how the Earth might change as temperatures rise often look back in time to a period around 3.6 million years ago called the middle Pliocene, when concentrations of carbon dioxide ranged from about 380 to 450 parts per million. (Today they are nearing 400.) A study published yesterday in the journal Science analyzed the longest land-based sediment core ever taken in the Arctic and found that during this period, from 3.6 million to 2.2 million years ago, the area around...