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Tag: glacial
A Dusty Greenland Is Speeding Up Glacial Melt
2014-06-10 08:30:00| Climate Ark Climate Change & Global Warming Newsfeed
ThinkProgress: Greenland provides one of the best real-time visuals of climate change - cleaving glaciers the size of buildings cascading into the ocean as one long, slow river of ice returning to the sea. A new study shows that a layer of dust covering much of Greenland`s ice sheet could be speeding up this process. A paper published in the journal Nature Geoscience suggests that dust particles embedded in Greenland`s massive ice sheet are gathering more heat than the otherwise white, reflective surface would...
Tags: greenland
melt
dusty
speeding
Solving puzzle ice age climates: Southern Ocean & explanation for 'Last Glacial Maximum'
2014-06-03 12:45:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceDaily: The paleoclimate record for the last ice age -- a time 21,000 years ago called the "Last Glacial Maximum" (LGM) -- tells of a cold Earth whose northern continents were covered by vast ice sheets. Chemical traces from plankton fossils in deep-sea sediments reveal rearranged ocean water masses, as well as extended sea ice coverage off Antarctica. Air bubbles in ice cores show that carbon dioxide in the atmosphere was far below levels seen before the Industrial Revolution. While ice ages are set...
Tags: age
maximum
ice
southern
Pakistan: Teams study bursting glacial lakes in northern areas
2014-05-25 21:16:00| Climate Ark Climate Change & Global Warming Newsfeed
Dawn: Meteorologists have been rushed to investigate two glacial lakes that burst out in Gilgit-Baltistan region recently, causing flash floods and disrupting traffic on Karakoram Highway (KKH). Deputy Commissioner Hunza Usman Ali told Dawn that a lake formed atop the roughly 20 kilometre-long Hussaini glacier in Gojal Valley burst its banks at three or four points on May 7 and the rushing waters damaged some agricultural land but spared the settlements down below. Such floodwaters bring down a...
Tags: study
areas
northern
teams
Glacial melt pours iron into ocean, seeding algal blooms
2014-05-23 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Scientific American: A decade ago, a common hypothesis was that rivers and dust supplied the ocean with most of its iron. Since then, scientists have reported in several papers that icebergs and deep-sea hydrothermal vents also may be significant contributors. Scientists report in a new study this week that glacial melt may be funneling significant amounts of reactive iron into the ocean, where it may counter some of the negative effects of climate change by boosting algal blooms that capture carbon. The paper, published...
Greenland glacial melt is growing factor rising sea levels
2014-05-18 18:50:00| Climate Ark Climate Change & Global Warming Newsfeed
Al Jazeera: Greenlands glaciers are far more vulnerable to climate change-induced warming oceans than previously thought, a report released Sunday by UC- Irvine and NASA glaciologists said. The study, published in the journal Nature Geoscience, reveals previously uncharted deep valleys stretching for dozens of miles under the Greenland Ice Sheet -- showing that there are no natural barriers to stop the melting. The findings echo a report released last week showing that glacial melting in West Antarctica...
Tags: levels
sea
growing
factor