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Latest Greenland ice sheet Stories

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2010-04-28 09:50:00

The 2010 Operation IceBridge mission to the Arctic is nearing its halfway point and wrapping up flights with NASA's DC-8 research airplane. In just over four weeks since leaving Palmdale, Calif., on March 21, scientists and crew have flown 14 successful missions over the Arctic Ocean and the Greenland Ice Sheet. They have been in the air for more than 120 hours and have flown a distance greater than 1.5 times around the world. IceBridge project scientist Michael Studinger, from the Goddard...

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2010-04-12 13:29:41

Rate of ice-cap melt has been accelerating since 1985 Close to 50 years of data show the Devon Island ice cap, one of the largest ice masses in the Canadian High Arctic, is thinning and shrinking. A paper published in the March edition of Arctic, the journal of the University of Calgary's Arctic Institute of North America, reports that between 1961 and 1985, the ice cap grew in some years and shrank in others, resulting in an overall loss of mass. But that changed 1985 when scientists began...

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2010-03-24 06:45:00

Ice loss from the Greenland ice sheet, which has been increasing during the past decade over its southern region, is now moving up its northwest coast, according to a new international study. Led by the Denmark Technical Institute's National Space Institute in Copenhagen and involving the University of Colorado at Boulder, the study indicated the ice-loss acceleration began moving up the northwest coast of Greenland starting in late 2005. The team drew their conclusions by comparing data from...

2010-02-27 07:56:41

As ESA's Mission Scientist for CryoSat, Mark Drinkwater's role in supporting the preparation of the mission has been to ensure that the satellite and data processing systems are compatible with achieving the mission's objectives of deriving accurate measurements of ice-thickness change. Mark Drinkwater, a British national, trained as a geophysicist and performed early pioneering research in the use of altimeter measurements over polar ice. He currently heads the Mission Science Division at...

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2010-02-16 06:05:00

According to studies released on Sunday, winds and currents that drive warmer water into fjords, where it carves out the base of coastal glaciers, are significantly eroding Greenland's ice sheet. The icy mass holds enough water to boost global sea levels 23 feet, which could potentially drown low-lying coastal cities and deltas across the globe. The ocean watermark is currently rising about 0.12 inches a year, which compares with 0.07 inches annually in the early 1960s. However,...

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2010-02-12 13:36:58

Theories about the rates of ice accumulation and melting during the Quaternary Period -- the time interval ranging from 2.6 million years ago to the present -- may need to be revised, thanks to research findings published by a University of Iowa researcher and his colleagues in the Feb. 12 issue of the journal Science. Jeffrey Dorale, assistant professor of geoscience in the UI College of Liberal Arts and Sciences, writes that global sea level and Earth's climate are closely linked. Data he...

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2009-12-16 09:27:00

Researchers learning more about how water beneath glaciers contributes to ice loss Scientists who study the melting of Greenland's glaciers are discovering that water flowing beneath the ice plays a much more complex role than they previously imagined. Researchers previously thought that meltwater simply lubricated ice against the bedrock, speeding the flow of glaciers out to sea. Now, new studies have revealed that the effect of meltwater on acceleration and ice loss -- through fast-moving...

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2009-12-15 06:20:00

A U.S. government agency predicted the melting of the polar ice cap in the year 2030. However, climate guru Al Gore said at the U.N. climate conference on Monday that new computer modeling indicates this could happen as soon as 2014. One U.S. government scientist on Monday said the new prediction was too severe, but other researchers have previously projected a quicker end than 2030 to the Arctic summer ice cap. Former U.S. Vice President Gore said, "It is hard to capture the astonishment...

2009-12-10 13:43:10

An international team of environmental scientists led by the University of Pennsylvania has shown that sea-level rise along the Atlantic Coast of the United States was 2 millimeters faster in the 20th century than at any time in the past 4,000 years. Sea-level rise prior to the 20th century is attributed to coastal subsidence. Put simply, land is being lost to subsidence as the earth continues to rise in response to the removal of the huge weight of ice sheets during the last glacial period....

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2009-11-30 10:42:06

In the film, "ËœThe Day After Tomorrow' the world enters the icy grip of a new glacial period within the space of just a few weeks. Now new research shows that this scenario may not be so far from the truth after all. William Patterson, from the University of Saskatchewan in Canada, and his colleagues have shown that switching off the North Atlantic circulation can force the Northern hemisphere into a mini "Ëœice age' in a matter of months. Previous work has indicated that...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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