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Thursday, December 02, 2010

Sea change coming -- but unevenly

Here's something surprising I didn't know:
 
"Climate change is expected to cause sea levels to rise -- at least in some parts of the world. Elsewhere, the level of the ocean will actually fall."
 
This is explained simply, but at length, in this article: http://www.spiegel.de/international/world/0,1518,732303,00.html#ref=nlint
 
Basically, it's a gravity effect.  If Greenland loses all that ice, it also loses mass -- so it has less gravitational attraction for the ocean around it.