Weblogsky: Climate debate is heating up

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Climate debate is heating up

A few scientists may still question growing evidence of global climate change, others wonder if the evident warming trend signals something even more extreme, a catastrophic "super-interglacial" state. [Link]

They emphasize that within a century global warming will probably exceed the Eemian temperature maximum and thus obviate all the models that have made this their essential scenario. They also suggest that the total or partial collapse of the Greenland Ice Sheet is a real possibility -- an event that would definitely throw a Younger Dryas wrench into the Gulf Stream.

If they are right, then we are living on the climate equivalent of a runaway train that is picking up speed as it passes the stations marked "Altithermal" and "Eemian." "Outside the envelope," moreover, means that we are not only leaving behind the serendipitous climatic parameters of the Holocene -- the last 10,000 years of mild, warm weather that have favored the explosive growth of agriculture and urban civilization -- but also those of the late Pleistocene that fostered the evolution of Homo sapiens in eastern Africa.

jon posted this at 8:24 AM
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