Green Options » polar bears

Arctic Sea Ice Lowest in 800 Years

Bryan Nelson — Thu, 02 Jul 2009 23:19:23 +0000

A plethora of corroborative data shows that this year’s sea ice levels in the Arctic are the lowest seen in 800 years.

The new research, published in the journal Climate Dynamics, doesn’t specify a cause or reason for the retreat, but it does note that if sea ice melt continues at this level, it’s likely that the North Pole will be completely ice-free during the summer months within a few decades.

Melting Ice Could Lead to Massive Waves of Climate Refugees

Earth Policy Institute — Thu, 04 Jun 2009 21:39:16 +0000

As the earth warms, the melting of the earth’s two massive ice sheets—Antarctica and Greenland—could raise sea level enormously. If the Greenland ice sheet were to melt, it would raise sea level 7 meters (23 feet). Melting of the West Antarctic Ice Sheet would raise sea level 5 meters (16 feet). But even just partial melting of these ice sheets will have a dramatic effect on sea level rise. Senior scientists are noting that the Intergovernmental Panel on Climate Change (IPCC) projections of sea level rise during this century of 18 to 59 centimeters are already obsolete and that a rise of 2 meters during this time is within range.

As I note in Plan B 3.0: Mobilizing to Save Civilization, assessing the prospects for the Greenland ice sheet begins with looking at the warming of the Arctic region. A 2005 study, conducted by the Arctic Climate Impact Assessment (ACIA) team, an international group of 300 scientists, concluded that the Arctic is warming almost twice as fast as the rest of the planet. It found that in the regions surrounding the Arctic, including Alaska, western Canada, and eastern Russia, winter temperatures have already climbed by 3-4 degrees Celsius (4–7 degrees Fahrenheit) over the last half-century.

In testimony before the U.S. Senate Commerce Committee, Sheila Watt-Cloutier, an Inuit speaking on behalf of the 155,000 Inuits who live in Alaska, Canada, Greenland, and the Russian Federation, described their struggle to survive in the fast-changing Arctic climate as “a snapshot of what is happening to the planet.” She called the warming of the Arctic “a defining event in the history of this planet.”

Green Options » polar bears

Arctic Sea Ice Lowest in 800 Years

A plethora of corroborative data shows that this year’s sea ice levels in the Arctic are the lowest seen in 800 years.

The new research, published in the journal Climate Dynamics, doesn’t specify a cause or reason for the retreat, but it does note that if sea ice melt continues at this level, it’s likely that the North Pole will be completely ice-free during the summer months within a few decades.

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