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Latest Polar ice packs Stories

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2011-01-17 06:05:00

The Northern Hemisphere's shrinking ice and snow cover is causing less and less sunlight to reflect back into space in a previously underestimated mechanism that could add to global warming, according to a new study on the subject. Satellite data indicated that Arctic sea ice, glaciers, winter snow pack and Greenland's ice were reflecting less energy back into space between 1979 and 2008. The dwindling amount of reflective energy exposes the ground and water, both of which are darker and...

2011-01-12 15:45:00

WASHINGTON, Jan. 12, 2011 /PRNewswire-USNewswire/ -- Global surface temperatures in 2010 tied 2005 as the warmest on record, according to an analysis released Wednesday by researchers at NASA's Goddard Institute for Space Studies (GISS) in New York. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The two years differed by less than 0.018 degrees Fahrenheit. The difference is smaller than the uncertainty in comparing the temperatures of recent years, putting them into a...

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2010-12-16 06:25:00

According to a new study released Wednesday, there is no "tipping point" beyond which climate change will eventually push the Arctic icecap into a total melt off. Over the past 30 years the polar icecap has shrunk between 15 and 20 percent causing much concern that with current trends -- with regional temperatures increasing two to three times the global average -- it could disappear entirely during the summer months by the end of this century. One factor in this calculation is a so-called...

b74e947d0e1c2e77e2d86f701a69f6011
2010-12-15 10:40:41

A novel project using cameras mounted on unmanned aircraft flying over the Arctic is serving double duty by assessing the characteristics of declining sea ice and using the same aerial photos to pinpoint seals that have hauled up on ice floes. The project is the first to use aircraft to monitor ice and seals in remote areas without putting pilots and observers at risk, said Elizabeth Weatherhead of the University of Colorado at Boulder, who is leading the study team. Weatherhead is a senior...

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2010-11-10 06:45:00

A NASA analysis of satellite data has quantified, for the first time, the amount of older and thicker "multiyear" sea ice lost from the Arctic Ocean due to melting. Since the start of the satellite record in 1979, scientists have observed the continued disappearance of older "multiyear" sea ice that survives more than one summer melt season. Some scientists suspected that this loss was due entirely to wind pushing the ice out of the Arctic Basin -- a process that scientists refer to as...

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2010-10-22 06:15:00

Climate scientists at the U.S. National Oceanic and Atmospheric Administration (NOAA) reported Thursday that Arctic temperatures are on the rise again. The sea ice extent has also fallen to one of the lowest levels on record, according to NOAA's annual Arctic report card, which was prepared this year by 69 researchers in eight countries. "A return to previous Arctic conditions is unlikely," wrote the scientists in the report. "Record temperatures across Canadian Arctic and Greenland, a...

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2010-10-13 11:57:20

Researchers at the University of British Columbia are deploying an underwater robot to survey ice-covered ocean in Antarctica from October 17 through November 12. Scientists predict that the sea ice area around Antarctica will be reduced by more than 33 percent by 2100, accelerating the collapse of ice shelves. Up to hundreds of meters thick, ice shelves are floating platforms of ice that cover almost half of Antarctica's coastline. The mission will study the effect of ice shelves on the...

bf74da7bd05dc75a614ff8f14b773f7d1
2010-09-16 09:16:28

The likelihood of summer Arctic ice cover disappearing within the next few years is unlikely, according to researchers from the University of Colorado at Boulder, though the minimum of ice found in the ocean has dipped to its third lowest levels since 1979. According to a press release, scientists at the university's National Snow and Ice Data Center (NSIDC) found that the Arctic ice extent dropped to 1.84 million square miles at its lowest point, on September 10. That is 630,000 square miles...

42299dcdcaa681dd81a7ea546ab0a86c1
2010-09-14 08:38:05

The Arctic Ocean is covered by a dynamic layer of sea ice that grows each winter and shrinks each summer, reaching its yearly minimum size each fall. While the 2010 minimum remains to be seen, NASA's Aqua satellite captured this snapshot on Sept. 3. How does the Aqua satellite "see" sea ice? Microwaves. Everything on Earth's surface -- including people -- emits microwave radiation, the properties of which vary with the emitter, thereby allowing the AMSR-E microwave sensor on Aqua to map the...

3a0086715127fc2cbce1e2ba5a27707a1
2010-09-14 06:30:00

Melting sea ice in the southern Arctic Ocean has caused tens of thousands of walruses to come ashore in northwest Alaska. US federal scientists say the move to shore by these marine mammals is unusual for the United States- although this has happened at least twice before, in 2007 and 2009. In those years Arctic sea ice was also near record low levels. U.S. Geological Survey biologist Anthony Fischbach told The Associated Press (AP) in a phone interview that the walruses "stretch out for...


Latest Polar ice packs Reference Libraries

Arctic Ocean
2013-04-18 22:31:23

The Arctic Ocean which is located in the Northern Hemisphere and mostly in the Arctic north polar region, is the shallowest and smallest of the world’s five major oceanic divisions. The International Hydrographic Organization recognizes it as an ocean, although, some oceanographers consider it as the Arctic Mediterranean Sea or simply, the Arctic Sea, classifying it a Mediterranean sea or an estuary of the Atlantic Ocean. Alternatively, the Arctic Ocean can be considered as the northernmost...

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Word of the Day
mallemaroking
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.