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Antarctic ice shelf is thinning from above and below

2015-05-13 17:02:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: A decade-long scientific debate about what's causing the thinning of one of Antarctica's largest ice shelves is settled this week (Wednesday 13 May) with the publication of an international study in the journal The Cryosphere. The Larsen C Ice Shelf -- whose neighbours Larsen A and B, collapsed in 1995 and 2002 -- is thinning from both its surface and beneath. For years scientists have been unable to determine whether it is warming air temperatures or warmer ocean currents that were causing the...

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Massive Antarctic Ice Shelf Faces Imminent Risk of Collapse

2015-05-13 16:15:00| Climate Ark Climate Change & Global Warming Newsfeed

Scientific American: An Antarctic ice shelf that is twice the size of Hawaii is at "imminent risk' of collapse and needs to be monitored carefully, a new study finds. The ice shelf--Larsen C--is located in roughly the same geography as the Larsen A and B ice shelves, which disintegrated in 1995 and 2002, respectively. Larsen C covers 19,300 square miles and is the largest shelf on the Antarctic Peninsula. If it melts, it could significantly raise global sea levels, said Paul Holland, the lead author of the study and...

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Scientists weigh up new evidence on Antarctic ice melt

2015-05-08 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed

Climate News Network: Antarctica has been losing its ice cover at an average rate of 92 billion tons a year since at least 2003, according to new research. And while the scientists cant yet say for certain that human-made climate change is the main cause, they warn that the ice loss has the potential to have serious impacts on sea level rise. The southern continent is the Earths largest store of fresh water, but is also its least studied area, having had no known human visitors until the late 18th century. So while...

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Shrinking Antarctic has us skating on thin ice

2015-04-19 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed

Sydney Morning Herald: Intergovernmental Panel on Climate Change was tucked away in a footnote. It stated that, of their various future sea-level scenarios, the estimate of the upper limit a 1.1 metre rise by 2100 was actually not the worst case. That is, the $226 billion value of Australian roads, rail, commercial buildings and homes spread over the coastal zone that may be underwater regularly by 2100 could be an underestimate. And they did not know by how much. The potential source of that extra water? A destabilised...

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Antarctic ice loss is accelerating

2015-03-30 19:02:00| Climate Ark Climate Change & Global Warming Newsfeed

Environmental News Network: New research published this week in the journal Science Express describes how the ice shelves around Antarctica are thinning and therefore allowing more of the ice sheet behind them to flow into the sea. Using nearly two decades of satellite data, the team of international researchers observed an acceleration of ice loss from the continents ice shelves, with an increase in loss of 70% in West Antarctica over the last decade. In the Amundsen and Bellingshausen regions, some ice shelves have...

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