10 May '11, 11pm

El Nino Tree Ring Story: El Niño and its partner La Niña, the warm and cold phases in the eastern half of the tr...

El Niño and its partner La Niña, the warm and cold phases in the eastern half of the tropical Pacific, play havoc with climate worldwide. Predicting El Niño events more than several months ahead is now routine, but predicting how it will change in a warming world has been hampered by the short historical record. El Niño/La Niña-Southern Oscillation is a quasiperiodic climate pattern that occurs across the tropical Pacific Ocean roughly every five years. It is characterized by variations in the temperature of the surface of the tropical eastern Pacific Ocean—warming or cooling known as El Niño and La Niña respectively—and air surface pressure in the tropical western Pacific—the Southern Oscillation. record. An international team of climate scientists from the University of Hawaii at Mānoa recently found that annually resolved tree-ring records from North America, particular...

Full article: http://www.enn.com/enn_original_news/article/42676

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enn.com 10 May '11, 12pm

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news.mongabay.com 11 May '11, 5pm

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