All Articles Tagged As: arctic

Ecologists use oceanographic data to predict future climate change (11/10/2008)

Past ocean circulation leads to new conclusions ...> Full Article

Scientists probe Antarctic glaciers for clues to past and future sea level (11/3/2008)

International team exploring two of the last uncharted regions of Earth, the Aurora and Wilkes Subglacial Basins, to learn about past climate change and future impacts on global sea level ...> Full Article

Less Ice In Arctic Ocean 6000-7000 Years Ago (10/23/2008)

Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice free. ...> Full Article

Origin of Alps-size Antarctic mountain range unknown (10/17/2008)

A U.S.-led, multinational team of scientists this month will investigate one of the Earth's last major unexplored places, using sophisticated airborne radar and ground-based seismologic tools to virtually peel away more than 2.5 miles of ice covering an Antarctic mountain range that rivals the Alps in elevation. ...> Full Article

2008 ozone hole larger than last year (10/12/2008)

The 2008 ozone hole - a thinning in the ozone layer over Antarctica - is larger both in size and ozone loss than 2007 but is not as large as 2006. ...> Full Article

Arctic sea ice annual freeze-up underway (10/6/2008)

fter reaching the second-lowest extent ever recorded last month, sea ice in the Arctic has begun to refreeze in the face of autumn temperatures, closing both the Northern Sea Route and the direct route through the Northwest Passage. ...> Full Article

Ancient Arctic Ice Could Tell Us About Future Of Permafrost (10/1/2008)

Researchers have discovered the oldest known ice in North America, and that permafrost may be a significant touchstone when looking at global warming. ...> Full Article

Arctic sea ice settles at second-lowest, underscores accelerating decline (9/18/2008)

The Arctic sea ice cover appears to have reached its minimum extent for the year, the second-lowest extent recorded since the dawn of the satellite era. ...> Full Article

Arctic ice on the verge of another all-time low (8/31/2008)

Current observations from ESA's Envisat satellite suggest that the extent of polar sea-ice may again shrink to a level very close to that of last year. ...> Full Article

North Pole could lose summer ice (8/10/2008)

Study of the Arctic's sea ice has confirmed its ongoing, massive shrinking and drastic thinning. ...> Full Article

Snapshot of past climate reveals no ice in Antarctica millions of years ago (7/29/2008)

A snapshot of New Zealand's climate 40 million years ago reveals a greenhouse Earth, with warmer seas and little or no ice in Antarctica ...> Full Article

Scientists break record by finding northernmost hydrothermal vent field (7/25/2008)

Well inside the Arctic Circle, scientists have found black smoker vents farther north than anyone has ever seen before ...> Full Article

A Single Boulder May Prove that Antarctica and North America Were Once Connected (7/18/2008)

A lone granite boulder found against all odds high atop a glacier in Antarctica may provide additional key evidence to support a theory that parts of the southernmost continent once were connected to North America hundreds of millions of years ago. ...> Full Article

How will the Arctic sea ice cover develop this summer? (7/13/2008)

The ice cover in the Arctic Ocean at the end of summer 2008 will lie, with almost 100 per cent probability, below that of the year 2005 ...> Full Article

Wilkins Ice Shelf hanging by its last thread (7/12/2008)

The Wilkins Ice Shelf is experiencing further disintegration that is threatening the collapse of the ice bridge connecting the shelf to Charcot Island. ...> Full Article

Even the Antarctic winter cannot protect Wilkins Ice Shelf (6/16/2008)

Wilkins Ice Shelf has experienced further break-up with an area of about 160 km² breaking off from 30 May to 31 May 2008. ESA’s Envisat satellite captured the event â€" the first ever-documented episode to occur in winter. ...> Full Article

Data show Antarctic ice stream radiating seismically (6/5/2008)

Seismologists have found seismic signals from a giant river of ice in Antarctica that make California's earthquake problem seem trivial. ...> Full Article

Arctic explorer delivers unique snow-depth data for CryoSat (5/24/2008)

Following a formidable 106-day trek across the Arctic, which ended with the two Arctic Arc expedition members relying on Envisat images to guide them safely through disintegrating sea-ice, intrepid polar explorer Alain Hubert recently visited ESA to handover a unique set of snow-depth measurements ...> Full Article

Climate Models Overheat Computer analyses of global climate have consistently overstated warming in Antarctica, concludes new research (5/10/2008)

Computer analyses of global climate have consistently overstated warming in Antarctica, concludes new research by scientists at the National Center for Atmospheric Research (NCAR) and Ohio State University. ...> Full Article

Global Climate Models Both Agree and Disagree With Actual Antarctic Data (5/8/2008)

Scientists who compared recorded Antarctic temperatures and snowfall accumulation to predictions by major computer models of global climate change offer both good and bad news. ...> Full Article

'New' Ancient Antarctic Sediment Reveals Climate Change History (4/29/2008)

Recent additions to the premier collection of Southern Ocean sediment cores at will give scientists a close-up look at fluctuations that occurred in Antarctica's ice sheet and marine and terrestrial life as the climate cooled considerably between 20 and 14 million years ago. ...> Full Article

Arctic Ice More Vulnerable to Sunny Weather, New Study Shows (4/25/2008)

The shrinking expanse of Arctic sea ice is increasingly vulnerable to summer sunshine ...> Full Article

Antarctic Ice Shelf Disintegrating As Result Of Climate Change, Scientists Say (3/27/2008)

Satellite imagery from the University of Colorado at Boulder's National Snow and Ice Data Center shows a portion of Antarctica's massive Wilkins Ice Shelf has begun to collapse because of rapid climate change in a fast-warming region of the continent. ...> Full Article

Prestigious science prize awarded for 800,000 year old ice core (3/17/2008)

Ice core scientists from the British Antarctic Survey (BAS) are joint winners of a major European science prize. The European Project for Ice Coring in Antarctica (EPICA) - which retrieved two deep ice cores that have revealed how Earth's climate behaved over the last 800,000 years - is one of three projects to be awarded the 2007 Descartes Prize for excellence in collaborative research. Three winning trans-national research teams share this year's Descartes Prize of 1.36 million Euros. The prize is awarded annually to teams which have achieved outstanding scientific or technological results through collaborative research in any field of science. ...> Full Article

New Method to Estimate Sea Ice Thickness (3/9/2008)

Scientists recently developed a new modeling approach to estimate sea ice thickness. This is the only model based entirely on historical observations. ...> Full Article

Rock studies help crack questions of glacier thinning in West Antarctica (3/2/2008)

Boulders the size of footballs could help scientists predict the West Antarctic Ice Sheet's (WAIS) contribution to sea-level rise according to new research published this week in the journal Geology. ...> Full Article

Antarctic ice shelf collapse explained (2/8/2008)

When the Larsen B Ice Shelf in Antarctica collapsed in 2002, the event appeared to be a sudden response to climate change, and this long, fringing ice shelf in the north west part of the Weddell Sea was assumed to be the latest in a long line of victims of Antarctic summer heat waves linked to Global Warming. ...> Full Article

New ice core shows more evidence of Antarctic Peninsula change (2/1/2008)

More evidence of changing weather patterns around the Antarctic Peninsula - a region where climate has changed rapidly over the last 50 years - is published this month in Geophysical Research Letters (online). ...> Full Article

Antarctic ice loss speeds up, nearly matches Greenland loss (1/27/2008)

Ice loss in Antarctica increased by 75 percent in the last 10 years due to a speed-up in the flow of its glaciers and is now nearly as great as that observed in Greenland, according to a new, comprehensive study by UC Irvine and NASA scientists. ...> Full Article

First evidence of under-ice volcanic eruption in Antarctica (1/25/2008)

The first evidence of a volcanic eruption from beneath Antarctica's most rapidly changing ice sheet ...> Full Article

New Antarctic Ice Core to Provide Clearest Climate Record Yet (1/23/2008)

After enduring months on the coldest, driest and windiest continent on Earth, researchers today closed out the inaugural season on an unprecedented, multi-year effort to retrieve the most detailed record of greenhouse gases in Earth's atmosphere over the last 100,000 years. ...> Full Article

Exploration Of Lake Hidden Beneath Antarctica's Ice Sheet Begins (1/18/2008)

A four-man science team led by British Antarctic Survey's (BAS) Dr Andy Smith has begun exploring an ancient lake hidden deep beneath Antarctica's ice sheet. The lake -- the size of Lake Windermere (UK) -- could yield vital clues to life on Earth, climate change and future sea-level rise. ...> Full Article

Arctic Impact Crater Lake Reveals Interglacial Cycles in Sediments (12/13/2007)

Researchers have taken cores from the sediments of a Canadian Arctic lake and found an interglacial record indicating two ice-free periods that could pre-date the Holocene Epoch. ...> Full Article

ANDRILL's 2nd Antarctic drilling season exceeds all expectations (12/9/2007)

A second season in Antarctica for the Antarctic Geological Drilling (ANDRILL) Program has exceeded all expectations, according to the co-chief scientists of the program's Southern McMurdo Sound Project. ...> Full Article

Aurora Borealis breaks new grounds - and old ice (12/6/2007)

It can crush ice sideways and stay precisely on station to an accuracy of a metre. It can drill a hole 1,000 metres deep into the seabed while floating above 5,000 metres of ocean and it can generate 55 megawatts of power. So far, Aurora Borealis is the most unusual ship that has never been built, and it represents a floating laboratory for European science, a breakthrough for polar research and a very big headache for international lawyers. ...> Full Article

New Antarctica research season kicks off (12/3/2007)

The approach of winter in the northern hemisphere means that summer is coming to Antarctica - still bitterly cold, but just warm enough to let scientists make progress on ongoing studies. ...> Full Article

New satellite study shows dramatic melting of Greenland ice during summer of 2007 (12/1/2007)

Newly published research that includes satellite data from three separate sources shows that the seasonal melt on Greenland's ice sheet during the summer of 2007 was a stunning 60 percent more than the previous high, set in 1998. ...> Full Article

Antarctic Team To Install Seismographs, Where 'No Man -Or Woman - Has Gone Before' (11/11/2007)

A team of seismologists from Washington University in St. Louis, like members of the starship Enterprise, will "boldly go where no man has gone before" after Thanksgiving this year. ...> Full Article

Scientists help map Antarctic ice sheets (11/3/2007)

Newcastle University scientists are joining the race to discover how climate change is affecting Antarctic ice sheets. ...> Full Article

Geologist Discovers Three New Minerals (10/12/2007)

New minerals include stornesite-(Y), chopinite and tassieite, all are extremely rare and represented only by microscopic samples. ...> Full Article

Clues to End of the Last Ice Age (9/29/2007)

Researcher shows that deep-sea temperatures rose 1,300 years before the buildup of atmospheric carbon dioxide, ruling out CO2 as driver of the last ice age's meltdown. ...> Full Article

Arctic heat wave stuns climate change researchers (9/27/2007)

Unprecedented warm temperatures in the High Arctic this past summer were so extreme that climate change researchers have begun revising their forecasts. ...> Full Article

Arctic Sea Ice Bottoms Out For 2007, Shatters All Time Record Low (9/24/2007)

Scientists say that the extent of Arctic sea ice appears to have reached its minimum for 2007 on Sept. 16, shattering all previous lows since satellite record-keeping began nearly 30 years ago. ...> Full Article

Scientist Studies Minnesota's Rock In Antarctica (8/4/2007)

Geologists learn by looking at rocks. Of course, it's not that simple. Here in Minnesota, the tapestry of mineral-laden geology lies buried under forests, soils and parking lots. ...> Full Article