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Tag: arctic
Arctic Ocean: Carbon Sink or Carbon Source?
2013-12-04 18:55:00| Climate Ark Climate Change & Global Warming Newsfeed
EcoWatch: For the past three decades, as the climate has warmed, the massive plates of sea ice in the Arctic Ocean have shrunk: in 2007, scientists observed nearly 50 percent less summer ice than had been seen in 1980. While the Arctic Ocean as a whole seems to be storing more carbon than in previous years, the increase in carbon sink capacity may not be as large as scientists predicted. Photo credit: NASA`s Aqua satellite shows the receding Arctic sea ice, Sept. 3, 2010. Dramatic changes in ice cover...
Tags: source
ocean
carbon
sink
New Arctic trade routes create opportunities for commerce and polluting
2013-11-28 15:00:00| Climate Ark Climate Change & Global Warming Newsfeed
ClimateWire: The expansion of the Panama Canal is expected to create new economic opportunities for the United States and the world, but how the canal is used and whether or not it sees competition from emerging Arctic sea routes will also have implications for the climate. In recent weeks, Vice President Joe Biden has been touting the job growth and efficiency gains the $5.25 billion Panama expansion will bring. The project, set for completion in 2015, will double the canal's current capacity by allowing for...
Tags: create
trade
opportunities
commerce
Arctic storms speed up release of methane plumes
2013-11-27 19:17:00| Climate Ark Climate Change & Global Warming Newsfeed
New Scientist: THE ocean is being stirred up like a fizzy drink. A stormier Arctic could fast-track methane gas into the atmosphere, potentially accelerating global warming. Working off the east Siberian coast, Natalia Shakhova of the University of Alaska in Fairbanks and colleagues drilled into the bed of the Laptev Sea a hotspot of methane emissions and used sonar to analyse gas bubbles in the water. They found the permafrost that usually sat beneath the seabed had thawed, allowing 500 kilograms of methane...
Tags: release
speed
arctic
storms
A frosty reception - US unveils Arctic strategy
2013-11-27 01:00:00| Naval Technology
Last week, US Defense Secretary Chuck Hagel set out the Pentagon's new Arctic strategy. The strategy could see a greater investment in cold-weather training for personnel and the acquisition of equipment designed to withstand harsh Arctic conditions.
Tags: strategy
reception
arctic
unveils
Arctic Seafloor Releasing 17 Teragrams Methane Every Year, Study Finds
2013-11-26 10:32:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature World: The Arctic seafloor might have a larger methane time-bomb than previously assumed. A new study has found that the East Siberian Arctic Shelf is releasing 17 teragrams of methane each year, about twice as much as previous estimates. One teragram is about 1 million tons. What's worse is that climate change might be accelerating its release. The study was conducted by researchers at the University of Alaska, Fairbanks and colleagues. Methane is the second-most prevalent greenhouse gas in the...
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