Showing posts with label sea ice. Show all posts
Showing posts with label sea ice. Show all posts

Thursday, November 19, 2009

In nod to global warming, Navy preps for ‘ice free’ Arctic

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By Katie Drummond Email Author, November 18, 2009

The dwindling Arctic ice cap has launched an international race for control of northern waters: Russia, Canada, Denmark, and even China are hustling to expand their military presence, plant flags and eye those 90 billion barrels of natural gas under the cap. Now the U.S. Navy’s getting ready for the thaw, with a strategic plan to maximize the U.S. stake up north.

The Navy’s Arctic Roadmap (.pdf), written by the recently launched Navy Task Force Climate Change (TFCC), opens with an acknowledgment that worldwide temperatures are on the rise — especially up north.  “The Arctic is warming twice as fast as the rest of the globe. While significant uncertainty exists in projections for Arctic ice extent, the current scientific consensus indicates the Arctic may experience nearly ice-free summers sometime in the 2030s,” the document notes.

Then the Arctic Roadmap sets out a three-phase plan to secure U.S. interests in the Arctic. Because there’s a lot at stake under that melting cap: energy reserves, transport lanes and potential territory disputes.

It’s the latest in a series of efforts by the sea service to cope with climate change. Just last month, the Navy announced its intention to deploy “an energy-efficient ‘Great Green Fleet’ carrier strike group consisting of ships powered either by nuclear energy or biofuels with an attached air wing of fighter jets fueled entirely by biofuels,” Military.com’s Greg Grant reported. …

In Nod to Global Warming, Navy Preps for ‘Ice Free’ Arctic

Monday, July 27, 2009

Revealed: the secret evidence of global warming Bush tried to hide

Photos from US spy satellites declassified by the Obama White House provide the first graphic images of how the polar ice sheets are retreating in the summer. The effects on the world's weather, environments and wildlife could be devastating

Satellite images of polar ice sheets taken in July 2006 and July 2007 showing the retreating ice during the summer. Photograph: Public Domain

By Suzanne Goldenberg and Damian Carrington

Graphic images that reveal the devastating impact of global warming in the Arctic have been released by the US military. The photographs, taken by spy satellites over the past decade, confirm that in recent years vast areas in high latitudes have lost their ice cover in summer months.

The pictures, kept secret by Washington during the presidency of George W Bush, were declassified by the White House last week. President Barack Obama is currently trying to galvanise Congress and the American public to take action to halt catastrophic climate change caused by rising levels of carbon dioxide in the atmosphere.

One particularly striking set of images - selected from the 1,000 photographs released - includes views of the Alaskan port of Barrow. One, taken in July 2006, shows sea ice still nestling close to the shore. A second image shows that by the following July the coastal waters were entirely ice-free.

The photographs demonstrate starkly how global warming is changing the Arctic. More than a million square kilometres of sea ice - a record loss - were missing in the summer of 2007 compared with the previous year.

Nor has this loss shown any sign of recovery. Ice cover for 2008 was almost as bad as for 2007, and this year levels look equally sparse. …

Revealed: the secret evidence of global warming Bush tried to hide

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