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Researchers from the Canadian Ice Service located the calving from taken on August 5.

"The good news from this study is that the Greenland ice sheet is not as sensitive to temperature increases and to ice melting and running out to sea in warm climate periods like the Eemian,as we thought," explains Dorthe Dahl-Jensen and adds that the bad news is that if Greenland's ice did not disappear during the Eemian then Antarctica must be responsible for a significant portion of the 4-8 meter rise in sea levels that we know occurred during the Eemian.

has argued that multiple could lead to nonlinear ice sheet disintegration much faster than claimed by the IPCC.

EPICA Dome C Ice Core High Resolution Holocene and Transition CO2 Data: Monnin, E.

I just returned from 9 days on the Greenland ice sheet at the NEEM drill site.

Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization.

Today is on the LEFT, and 400,000 years ago on the RIGHT; ice-core papers are often done this way, but not always, and this is backward from most of the figures in this class.

Colder during the ice ages, warmer during the interglacial periods.

Ice cores show that events such as this occur approximately every 150 years on average.

The ice cores that he and his colleagues drill from Greenland and Antarctica tell us that the last time greenhouse gas concentrations in the atmosphere were as high as they are today, the world was even warmer than it is now, Greenland was largely deglaciated, and sea level was 10 to 15 feet higher.