Global Warming Follies

If this means that NYC won’t flood how will Al Gore try to scare us now?

Posted in Common Sense by tjgavin on January 12, 2008
OSLO (Reuters) — Giant glaciers formed about 90 million years ago during a warm period when alligators thrived in the Arctic, researchers said Thursday, calling into question the belief that all ice melts in a “super greenhouse” climate.The researchers’ study, based on organic molecules in ocean sediments and chemicals in ancient fossil shells, indicated that there were ice sheets in Antarctica in parts of the Turonian period, one of the warmest times in history, when dinosaurs thrived.The researchers, in the study published in the journal Science, wrote that the “super greenhouse climate” was “not a barrier to the formation of large ice sheets, calling into question the common assumption that the poles were always ice-free during past periods of intense global warming.”The study estimated that glaciers formed during a 200,000-year period some 91 million years ago, creating ice sheets that were perhaps 60 percent of the size of the modern Antarctic ice cap.At the time, tropical surface ocean temperatures in the west Atlantic exceeded 95 to 99 degrees Fahrenheit, several degrees warmer than now, and alligators and tropical breadfruit trees flourished in the Arctic.How other parts of the world were cold enough for ice to form is still unclear, the American, British, German and Dutch scientists said. The Turonian period was marked by big temperature swings, perhaps linked to shifts in Earth’s orbit.Thomas Wagner, a German scientist at Newcastle University in England who was among the authors, cautioned against concluding that modern ice in the Arctic or Antarctic might resist current global warming.

“It’s difficult to draw a direct relationship between our findings and the current discussion on the climate,” Mr. Wagner said.

“The results, however, show that even in a very warm world it is possible, at least temporarily, to build up larger ice caps in cooler regions,” he said.

The United Nations’ Climate Panel estimates that modern global warming could melt glaciers and raise world sea levels by up to two feet by 2100.


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