Arctic literally on thin ice, points out new evidence

October 9th, 2009 WASHINGTON - You would have to go back at least 15 million years to find carbon dioxide levels as high as they are today, say scientists. Then "global temperatures were five to 10 degrees Fahrenheit higher than they are today, sea level was approximately 75 to 120 feet higher than today, there was no permanent sea ice cap in the Arctic and very little ice on Antarctica and Greenland," said Aradhna Tripathi, who led the study.

September 22nd, 2009 WASHINGTON - New findings by scientists indicate that that Arctic ice would last decades longer than thought, and the region won't experience ice-free summers until 2030 or 2040. Some models had previously predicted that the Arctic could be ice free in summer by as soon as 2013, due to rising temperatures from global warming.

September 18th, 2009 WASHINGTON - A new study has found that the Arctic sea ice cover appears to have reached its minimum extent for this year, the third-lowest recorded since satellites began measuring sea ice extent in 1979. The study was carried out by researchers from to the University of Colorado at Boulder's National Snow and Ice Data Center.

September 17th, 2009 Arctic sea ice melt still heavy, but no recordWASHINGTON — The summer melt of Arctic sea ice wasn't quite as bad this year as the last two years. But it still ranked as the third biggest melt on record.

September 10th, 2009 Arctic exploration finds large underwater mountainWASHINGTON — Joint U.S.-Canada exploration of the Arctic sea floor discovered an unusual underwater mountain and evidence that could boost the two countries' claims that their boundaries extend farther north. For the past two months ships from the countries have ventured north in icy areas of the Arctic where almost no surface ships have been, in an effort to find out how far the continental shelf extends.

September 9th, 2009 WASHINGTON - Developing oil rigs in the Arctic is helping predators prey on nesting birds by providing them with subsidised housing. They nest and den around drilling infrastructure and supplement their diets with garbage and nesting birds, says a new study by Wildlife Conservation Society, US Fish and Wildlife Service.

August 7th, 2009 WASHINGTON - A climate model has predicted that global warming, combined with nuclear waste, may make the Arctic Ocean a polluted soup by the year 2070. According to a report in New Scientist, Ola Johannessen, director of the Nansen Environmental and Remote Sensing Center in Bergen, Norway, and his colleagues, developed the model.

July 10th, 2009 WASHINGTON - In a new research, scientists have obtained evidence for ice-free summers with intermittent winter sea ice in the Arctic Ocean during the Late Cretaceous period, which should help predict how the Arctic is likely to respond to future global warming. The Late Cretaceous, the period between 100 and 65 million years ago leading up to the extinction of the dinosaurs, is crucial in this regard because levels of carbon dioxide (CO2) were high, driving greenhouse conditions.

July 8th, 2009 WASHINGTON - Data from a NASA Earth-orbiting spacecraft has revealed a dramatic thinning of Arctic sea ice between the winters of 2004 and 2008, with thin seasonal ice replacing thick older ice as the dominant type for the first time on record. The new results provide further evidence for the rapid, ongoing transformation of the Arctic's ice cover.

July 5th, 2009 WASHINGTON - A new study by scientists has shown a dramatic increase in the amount of fresh water in the Arctic Ocean. Fresh water flowing into or out of the Arctic Ocean plays an important role in ocean circulation and may be a factor in the response of the world ocean to climate change.

July 5th, 2009 WASHINGTON - An analysis by scientists has suggested that the Arctic was an enclosed freshwater lake until about 38 million years ago, when tectonic activity caused it to undergo a transition to an ocean. Recent studies have suggested that beginning about 44 million years ago the Arctic underwent a transition from lake to ocean conditions.

May 4th, 2009 WASHINGTON - In a new study, researchers in Canada are reporting for the first time that high mercury levels in certain Arctic seals appear to be linked to vanishing sea ice caused by global warming. The study, by scientist Gary Stern and his colleagues, provides a new insight into the impact of climate change on Arctic marine life.

April 27th, 2009 WASHINGTON - Scientists have discovered a dinosaur tooth along what's now the Kakanaut River of northeastern Russia, a find that shows dinos once lived above the Arctic Circle. Scientists say the dinosaurs became extinct 65 million years ago when a big meteor crash set off volcanoes galore, with dust and smoke filling up the air.

April 7th, 2009 WASHINGTON - Latest satellite imagery shows that the Arctic is virtually teetering on a layer of thin ice, not to speak of its shrinking ice area over the decade. Researchers from NASA and University of Colorado-Boulder (CUB), who have been tracking Arctic sea ice cover with satellites since 1979, found that the winter of 2008-09 was the fifth lowest maximum ice extent on record.

April 3rd, 2009 WASHINGTON - A new analysis of computer models has forecasted that summers in the Arctic may be ice-free in as few as 30 years. "The Arctic is changing faster than anticipated," said James Overland, an oceanographer at NOAA's Pacific Marine Environmental Laboratory and co-author of the study.