Darker days during Arctic summer

By Sid Perkins, 15:57 PM April 15, 2008

From Acapulco, Mexico, at a meeting of the American Geophysical Union

Satellite observations of Earth indicate that Arctic regions reflected less sunlight into space in the summer of 2006 than in other recent years. That change could contribute to the warming of Earth's climate.

Sensors on board NASA's Terra satellite have been observing Earth's surface since May 2000, says Roger Davies, a climate physicist at the University of Auckland in New Zealand. By analyzing those data in 36-day sets, D...

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