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DanG
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Greenland Ice Shows Rapid Climate Flips
| Quote From Source: | In as little as three years, patterns in the atmosphere have suddenly shifted and flipped into a new state, apparently contributing to rapid warming of the Northern Hemisphere, according to the new analysis of an ice core from northern Greenland.
The study focused on two quick warming periods—14,700 and 11,700 years ago—that together pushed our planet out of the last ice age.
During such ice ages, Earth's climate was more variable overall than it has been relatively recently; spanning the past 11,700 years, our planet's current climatic period—known as the Holocene—has been marked by an unusually warm and stable climate.
But it's possible this could change quickly, the new study suggests.
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http://news.nationalgeographic.com/news/pf/68600983.html |
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Avastar
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| Quote From Source: | The ice core showed the Northern Hemisphere briefly emerged from the last ice age some 14,700 years ago with a 22-degree-Fahrenheit spike in just 50 years, then plunged back into icy conditions before abruptly warming again about 11,700 years ago. Startlingly, the Greenland ice core evidence showed that a massive "reorganization" of atmospheric circulation in the Northern Hemisphere coincided with each temperature spurt, with each reorganization taking just one or two years, said the study authors.
| | Click source url to view entire story. |
http://www.eurekalert.org/pu...s/2008-06/uoca-gic061808.php
"Mother Nature is going to kick our ass" |
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posted on 6/20/2008 at 07:07
