PASADENA, Calif. – A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales. The results suggest not all the large changes seen in Arctic climate in recent years are a result of long-term trends associated with global warming.
The team, led by James Morison of the University of Washington’s Polar Science Center Applied Physics Laboratory, Seattle, used data from an Earth-observing satellite and from deep-sea pressure gauges to monitor Arctic Ocean circulation from 2002 to 2006. They measured changes in the weight of columns of Arctic Ocean water, from the surface to the ocean bottom. That weight is influenced by factors such as the height of the ocean’s surface, and its salinity. A saltier ocean is heavier and circulates differently than one with less salt.
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Noelle dEstries
Noelle d'Estries, an early GO employee who took on the varied roles of Community Manager, green celebrity blogger, and more. She currently runs worstcookever.com GO entered Noelle's life in February 2007 while she was burning tires in her backyard. A phone call from the green gods at GO, burnt out the fires. Now, Noelle happily wears her GO sweatshirt while eating organic veggies and asking for paper, not plastic. A regular at the local farmer's market, Noelle shuns raking leaves and lawn maintenance, while making gourmet foods constantly. When not staring at her computer screen, she spends time with her equally attractive dog, Tessa, cat, Tim and lover Paul. She currently holds all three point records at RIT and could eat avocados and drink wine for the rest of her life.
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