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News articles on Sea Ice

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Mongabay.com news articles on sea ice in blog format. Updated regularly.

Endangered species status of the polar bear to be decided May 15
(4/29/2008) A federal judge has ordered the Bush administration to stop delaying its decision on whether to list the polar bear as an endangered species. Environmentalists say the bear is threatened by melting sea ice in its Arctic habitat.


The Arctic's most threatened marine mammals due to climate change
(4/25/2008) A recent study has measured the sensitivity to Arctic marine mammals to climate change. The study found that the three species most vulnerable to climate change are the hooded seal, the polar bear, and the narwhal: the common thread between these species being the loss of sea ice.


Sunshine worsens Arctic sea ice melt
(4/21/2008) Arctic sea ice is increasingly vulnerable to sunny days, concludes new research published in the journal Geophysical Research Letters.


Photos: Warming triggers massive Antarctic ice shelf collapse
(3/25/2008) Satellites have captured the collapse of a massive ice shelf in Antarctica. At 160 square miles the area of collapsed ice was seven times the size of Manhattan. Scientists say the collapse is the beginning of a "runaway" disintegration of the 13,680 square kilometer (5,282 square mile) Wilkins Ice Shelf on the southwest Antarctic Peninsula. The region has experienced the largest temperature increase on the planet, rising by 0.5 degree Celsius (0.9 degree Fahrenheit) per decade over the past 50 years.


Swan finds love with paddleboat
(3/25/2008) In a bizarre story out of Muenster, Germany, a black swam will be reunited with its companion — a paddleboat shaped like an outsized white swan, reports the Associated Press.


Perennial ice disappearing in the Arctic receives little attention from the media
(3/19/2008) A big story came out on the loss of perennial ice in Arctic from NASA on Wednesday — and was mostly ignored by the media. Despite a colder winter than usual, the Arctic is losing its perennial ice (ice that lasts longer than a season) making the region even more susceptible to global warming. Perennial ice used to cover 50-60 percent of the Arctic. Results from this year's satellites show that perennial ice has decreased to less than 30 percent. In addition ice older than six years has declined from 20 percent in the eighties to six percent today.


Climate system approaching 9 critical tipping points
(2/4/2008) Earth is approaching and may pass nine important climate tipping points this century, according to research published this week in Proceedings of the National Academy of Science (PNAS).


Arctic sea ice cold melt by summer of 2013
(12/12/2007) Melting in the Arctic is occurring faster than most scientists predicted, according to research presented at the fall meeting of the American Geophysical Union in San Francisco.


NASA: Arctic Ocean circulation reversal not due to global warming
(11/13/2007) A study published in Geophysical Research Letters shows that weakening of the Arctic Oscillation results from a cyclical process rather than climate change. The results suggest not all the large changes seen in Arctic climate in recent years are a result of long-term trends associated with global warming.


Arctic sea ice extent hits record low in September
(10/16/2007) Arctic sea ice reached a record low in September 2007, well below the previous record set in 2005 and substantially below the long-term average, according to an image released by NASA.


Northwest Passage now open for business
(9/15/2007) Melting sea ice has opened the Northwest Passage in the Arctic to navigation, reports the European Space Agency. The clearing allows direct access between the North Pacific and North Atlantic and could eventually be a cheaper shipping route that the Panama Canal.


Arctic sea ice thickness only half of 2001 level
(9/14/2007) Arctic sea is thinning and disappearing, report German researchers. An Alfred-Wegener-Institute for Polar and Marine Research expedition to the North Polar Sea found that large areas of the Arctic sea-ice are only one meter thick this year -- half the thickness found in 2001. The findings support concerns that large expanses of polar ice could soon disppaear from the Arctic during summer months.


Arctic sea ice melts to all-time record low
(9/12/2007) Sea ice cover in the Arctic Ocean is presently 20 percent below its all time lowest extent and may decline further before winter, said scientists from the National Snow and Ice Data Center in Boulder (NSIDC).


Experts forecast large decline in Arctic sea ice
(9/7/2007) Summer sea ice off Alaska's north coast will likely shrink to nearly half the area it covered in the 1980s by 2050, report scientists from the National Oceanic and Atmospheric Administration. The loss of ice would have a significant impact on mammals dependent on sea ice, including polar bear and walrus.


Two-thirds of polar bears at risk of extinction by 2050
(9/7/2007) Two-thirds the world's polar bears could be threatened with extinction by 2050 due to melting sea ice, said U.S. government scientists Friday. U.S. Geological Survey scientists said that the United States (the north coast of Alaska) and Russian would likely lose all of their polar bear populations. The only bears expected to survive would be those in the northern Canadian Arctic islands and the west coast of Greenland. Overall, bears are forecast to lose 42 percent of the Arctic range they need to hunt and breed during summer months.


Northwest Passage Nearly Open, reports NASA
(8/28/2007) The fabeled Northwest Passage is nearly open, with implications for trade and natural resource exploitation, reports NASA.


Arctic sea ice shrinks to record low in 2007
(8/15/2007) Arctic sea ice has shrunk to a record low according the Japan Aerospace Exploration agency.


Floating sea ice shrinks in the Arctic
(8/10/2007) By one estimate, the extent of floating sea ice in the Arctic has shrunk more than in any summer ever recorded, reports the New York Times.


Polar bears avoiding sea ice for cub dens
(7/15/2007) Polar bears in Alaska are increasingly setting up dens on sea on land because sea ice is thinning, reports a new study by U.S. Geological Survey (UCGS) researchers.


Sea ice forecasts to be used to save polar bears
(5/30/2007) In the wake of the U.S. government's watershed decision to propose listing the polar bear as 'Threatened' under the Endangered Species Act, the Wildlife Conservation Society (WCS) is launching a bold initiative to save the Earth's largest terrestrial predator, not by following the bears themselves, but the receding sea ice habitat that may drastically shrink as a result of global warming. In a project named 'Warm Waters for Cool Bears,' WCS will use both current and historical satellite imagery to predict where sea ice is likely to persist and where subsequent conservation efforts to save the species will be most effective.


Arctic sea ice melting faster than previously thought
(4/30/2007) Arctic sea ice is melting far faster than previously believed reports a new study published in the May 1 issue of Geophysical Research Letters. A comparison of newly available observational data to advanced simulations reveals that Arctic sea ice has been disappearing about three times faster than the average rate of loss projected by computer models. The new research, conducted by Julienne Stroeve of the National Snow and Ice Data Center (NSIDC) and his colleagues, shows that September sea ice extent retreated at a rate of about 7.8 percent per decade during the 1953-2006 period, not the 2.5 percent projected by simulations. The basis for the new data--a combination of satellite measurements and early aircraft and ship reports--is considered more reliable than the earlier records.


Icy places first feel the effects of global warming
(4/16/2007) Inuit hunters are falling through thinning ice and dying. Dolphins are being spotted for the first time. There's not enough snow to build igloos for shelter during hunts.


Arctic sea ice extent second lowest on record
(4/4/2007) Winter sea ice in the Arctic was the second smallest area on record, narrowly missing the 2006 mark, according to scientists from the University of Colorado's National Sea and Ice Data Center (NSIDC).


Earth may be near global warming tipping point
(3/15/2007) Earth could be reaching a tipping point that could trigger rapid climate change according to scientists studying declining sea ice in the Arctic.


Melting glaciers, not ice sheets, primarily responsible for rising sea levels
(12/11/2006) A new study says that melting glaciers are contributing more to the global rise in sea levels than melting ice sheets in Greenland and Antarctica. Of the estimated 650 billion tons of ice lost to the oceans annually, some 400 billion tons comes from the melting of small glaciers and icecaps, according to Professor Tad Pfeffer of the Institute of Arctic and Alpine Research at the University of Colorado at Boulder. Only 250 billion tons -- or less than 40 percent -- comes from the melting of the Greenland and Antarctic ice sheets.


Global warming coud make Arctic sea ice-free by 2040
(12/11/2006) Global warming is causing an abrupt retreat in Arctic sea ice that could leave the Arctic Ocean with ice-free summers by 2040 according to research published in the December 12 issue of Geophysical Research Letters.


Arctic sea ice levels fall
(10/4/2006) Arctic sea ice fell to the fourth lowest level on record according to researchers at the University of Colorado at Boulder.


Arctic ice hole larger than Britain forms, shocks scientists
(9/19/2006) European Space Agency satellite images acquired from 23 to 25 August 2006 have shown for the first time dramatic openings larger than the size of the British Isles in the Arctic's perennial sea ice pack north of Svalbard, and extending into the Russian Arctic all the way to the North Pole. The agency says the findings are shocking to scientists. 'If this anomaly trend continues, the North-East Passage or 'Northern Sea Route' between Europe and Asia will be open over longer intervals of time, and it is conceivable we might see attempts at sailing around the world directly across the summer Arctic Ocean within the next 10-20 years,' said Mark Drinkwater, a scientist with ESA.


Arctic ice melting rapidly, polar bears suffering - new research
(9/18/2006) New research shows that Arctic sea ice is rapidly disappearing. Scientists say that the human-induced buildup of greenhouse gases in the atmosphere is a leading culprit behind the decline.


Greenland's ice melting rapidly
(8/10/2006) A new analysis of data from twin satellites has revealed that the melting of Greenland's ice sheet has increased dramatically in the past few years, with much of the loss occurring primarily along one shoreline potentially affecting weather in Western Europe.


Global warming could doom the walrus finds new study
(4/14/2006) Add the walrus to the list of species threatened by climate change. A new study finds unprecedented pup abandonment in the Arctic due to disappearing sea ice. A new study warns that walrus calves are being stranded by melting sea ice in the Arctic Ocean. Researchers aboard the U.S. Coast Guard icebreaker Healy during a cruise in the Canada Basin in the summer of 2004 found lone walrus calves swimming far from shore--something never before documented. The sightings suggest that increased polar warming may be forcing mothers to abandon their pups as they follow the rapidly retreating ice northwards. If these observations portray a larger trend, a warming Arctic ice may lead to decreases in the walrus population say the scientists whose research was published in the April issue of Aquatic Mammals.


Antarctic and Greenland ice sheets are melting find new studies
(3/17/2006) Scientists have confirmed that climate warming is changing how much water remains locked in the Antarctic and Greenland ice sheets, according to an article published in the Journal of Glaciology.


Greenland ice cap melting faster finds NASA
(12/26/2005) In the first direct, comprehensive mass survey of the entire Greenland ice sheet, scientists using data from the NASA/German Aerospace Center Gravity Recovery and Climate Experiment (Grace) have measured a significant decrease in the mass of the Greenland ice cap. Grace is a satellite mission that measures movement in Earth's mass.



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