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Arctic Sea ice sits at record low for mid-February
2014-02-20 15:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Climate Central: Arctic sea ice growth has slowed dramatically in recent weeks, thanks in large part to abnormally warm air and water temperatures. Sea ice now sits at record low levels for mid-February. According to the National Snow and Ice Data Center, as of February 18, sea ice covered about 14.36 million square kilometers in the Arctic. The previous low on this date was 14.37 million square kilometers in 2006. The main culprit -- in addition to the overall trend of global warming -- is likely the rash...
These are dark days for the Arctic literally
2014-02-19 23:55:00| Climate Ark Climate Change & Global Warming Newsfeed
Grist: Things are getting gloomy up north, where the Arctic region is losing its albedo. No, not libido - this isn`t a problem that can be fixed with ice-blue pills and adventurous nature videos. Albedo. It`s a scientific term that refers to the amount of light that the surface of the planet reflects back into space. Reflecting light away from the Earth helps keep things cool, so the loss of Arctic albedo is a major problem. And new research has concluded that the problem is an even greater one than...
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Arctic Ice Darkening Faster Previously Thought
2014-02-19 19:32:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: Sea ice in the Arctic Ocean reflects sunlight, and therefore has a cooling effect on the Earth. However, the recent retreat of sea ice has been underestimated, according to a new study, and the Earth's albedo, or reflectivity, is decreasing at a faster rate than previously thought. The study was conducted by researchers at Scripps Institution of Oceanography at the University of California, San Diego, using data from the Cloud's and Earth's Radiant Energy System (CERES) aboard several NASA satellites....
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Loss of Arctic Sea Ice Has Greater Warming Impact Than Expected
2014-02-19 18:31:00| Climate Ark Climate Change & Global Warming Newsfeed
Yale Env 360: The steady disappearance of Arctic sea ice, which is causing the exposed and darker surface of the Arctic Ocean to absorb more sunlight, is having a more profound impact on global warming than previously estimated, according to a new study. The decline of albedo, or reflectivity, from the Arctic Ocean equals roughly 25 percent of the warming caused by rising carbon dioxide levels, according to scientists at the University of California, San Diego. The impact of this "albedo feedback," in which the...
Arctic thaw significantly worsens global warming risk
2014-02-18 19:55:00| Climate Ark Climate Change & Global Warming Newsfeed
New Scientist: Melting ice is cooking the planet. Shrinking Arctic sea ice means the ocean is absorbing more energy from the sun, and it's now clear the effect is twice as big as thought - adding significantly to heating from greenhouse gases. Arctic temperatures have risen 2 °C since the 1970s, leading to a 40 per cent dip in the minimum summer ice coverage in the Arctic Ocean. Open water soaks up more sunlight than ice, so as the ice retreats the ocean absorbs more energy, warming it and causing even more...
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