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Newsletter February 24, 2006 Ice
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Prelim
Design cont..."Architectural Record, in partnership with the Tulane School of Architecture, announces two International Competitions to generate housing proposals for New Orleans in the aftermath of Hurricane Katrina."
In our Hurricane Katrina Special Feature, Architectural Record is publishing new material on the challenge of rebuilding and reprises the best of our print coverage. Here, you will find
- Articles about the government's response.
- Articles and audio about how local architects are coping .
- Ways in which the national architecture community is getting involved.
- Web exclusive slide shows of the hurricanes's aftermath, with audio.
- A competition sponsored by Architectural Record and Tulane University for rebuilding.
- Links to more resources for news and help, and analysis of what should replace what has been destroyed.
WorldChanging
"WorldChanging.com works from a simple premise: that the tools, models and ideas for building
a better future lie all around us. That plenty of people are working on tools for change, but
the fields in which they work remain unconnected. That the motive, means and opportunity for
profound positive change are already present. That another world is not just possible, it's here.
We only need to put the pieces together."
We've changed the world slide show
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worldchanging.com
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Slide show
Greenland Ice Sheet
"The changing mass of the great ice sheets of Greenland and Antarctica represents the largest unknown in predictions of global sea-level rise over the coming decades. At 1.7 million km2, up to 3 km thick, and a little smaller than Mexico, the Greenland Ice Sheet would raise global sea level by about 7 m if it melted completely. This could take from a millennium to a few thousand years (if melting were the only mechanism by which it lost mass) depending on the magnitude of future warming."
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Of more immediate concern are several sets of new observations, derived largely from remote-sensing satellites. As reported by Rignot and Kanagaratnam the velocities of several large glaciers draining the ice sheet to the sea, already among the fastest-flowing on Earth, have recently doubled to reach over 12 km year-1. In addition, the ice sheet has experienced a greater area of surface melting this year than at any time since systematic satellite monitoring began in 1979. Both these changes increase mass loss from the ice sheet, with the implication that current estimates of global sea-level rise over the next century, of about 0.5 ± 0.4 m, may be underestimated. |
"This new information on velocity change more than doubles previous estimates of losses from the ice sheet to the global ocean."
Science Magazine - Vol. 311, February 17, 2006
