August 15, 2013

Why Did the Sea Level Briefly Drop in 2010?

Sid Perkins, Science Now

AP Photo

Sea level has been rising about 3 millimeters per year, on average, since 1993, according to data gathered by space-based radar altimeters. But in mid-2010, scientists noticed a curious trend: For the first time in two decades, global average sea level began dropping. Over the course of 6 months or so, sea level fell about 7 mm, and it didn’t rise back to its previous level until the end of 2011.

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TAGGED: Sea Level Rise