Friday, December 14, 2007

Marketing global warming

At the time the consensus view of scientists was that it had been much warmer in earlier interglacial periods as well as in the Medieval, Roman and Minoan times. The FAR showed this in three panels the third of which is reproduced below, showing the Medieval Warm period still warmer than now and the more recent Little Ice Age from which some argue we may still be recovering. If the 1991 view of historic temperature were true it places limits on the possible role of greenhouse gases.

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