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Posted Mon Nov 29 2010: from Scientific American:
Worst case study: global temp up 7.2F degrees by 2060s
World temperatures could soar by 4 degrees Celsius (7.2 degrees Fahrenheit) by the 2060s in the worst case of global climate change and require an annual investment of $270 billion just to contain rising sea levels, studies suggested on Sunday. Such a rapid rise, within the lifetimes of many young people today, is double the 2 degrees C (3.6 degrees Fahrenheit) ceiling set by 140 governments at a U.N. climate summit in Copenhagen last year and would disrupt food and water supplies in many parts of the globe. Rising greenhouse gas emissions this decade meant the 2 degree goal was "extremely difficult, arguably impossible, raising the likelihood of global temperature rises of 3 or 4 degrees C within this century," an international team wrote.... One of the papers gave what it called a "pragmatic estimate" that sea levels might rise by between 0.5 and 2 meters (1.64 to 6.56 feet) by 2100 if temperatures rose 4 degrees Celsius. Containing a sea level rise of 2 meters, mostly building Dutch-style sea walls, would require annual investments of up to $270 billion a year by 2100.
[Read more stories about: climate impacts, carbon emissions, anthropogenic change, rising sea level, ocean warming, feedback loop]

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'Doc Michael says:
Good news, since our worst case scenarios are much worser.

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