The Greenland ice sheet panic

Scotsman:

THE world may be on the brink of a global warming "tipping point" that could see a 23ft rise in sea levels and doom future generations to catastrophic flooding, an expert has warned.

A temperature rise of just 1C would trigger the unstoppable collapse of the Greenland ice sheet, a vast layer of ice stretching 1,200 miles and covering 80 per cent of Greenland, said Professor Tim Lenton.

Of this warming, 0.7C was already due to take place and was held up only by natural time lags in the climate system.

The Intergovernmental Panel on Climate Change has reported that the ice sheet will take at least 1,000 years to melt.

But Prof Lenton's group at the University of East Anglia believes it could break up much sooner, within 300 years.

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History says their prediction is wrong. In the post below I mention the vikings discovery of Greenland when it was green and not covered by an ice sheet. There is no evidence that during that period sea levels were significantly higher than they are today, much less 23 feet higher.