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http://researchnews.osu.edu/archive/icerosetta.htm
Lonnie Thompson is one cool dude.
Lonnie Thompson is one cool dude.
Discovery of 1,800-year-old "Rosetta Stone?"for Tropical Ice Cores
Two annually dated ice cores drawn from the tropical Peruvian Andes reveal Earth's tropical climate history in unprecedented detail -- year by year, for nearly 1,800 years.
Researchers at The Ohio State University retrieved the cores from a Peruvian ice cap in 2003, and then noticed some startling similarities to other ice cores that they had retrieved from Tibet and the Himalayas. Patterns in the chemical composition of certain layers matched up, even though the cores were taken from opposite sides of the planet.
[FONT=Arial, Helvetica, sans-serif][SIZE=-1]Lonnie Thompson and Ellen Mosley-Thompson[/SIZE][/FONT]
In the April 4, 2013 online edition of the journal Science Express, they describe the find, which they call the first annually resolved "Rosetta Stone" with which to compare other climate histories from Earth's tropical and subtropical regions over the last two millennia.
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The Thompsons have drilled ice cores from glaciers atop the most remote areas of the planet?the Chinese Himalayas, the Tibetan Plateau, Kilimanjaro in Africa, and Papua Indonesia among others --to gauge Earth's past climate. Each new core has provided a piece of the puzzle, as the researchers measured the concentrations of key chemicals preserved in thousands of years of accumulated ice.
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