A scientist explains the mystery behind the 2010-2011 sea-level drop
For the past couple of decades, the oceans have been steadily rising. Each year, sea-level increases by about 3 millimeters, a constant and ominous creep responding to climate warming. Scientists have been measuring this rise from satellites since 1993, but for an 18-month period that began in the middle of 2010, something surprising happened. Instead of rising, sea levels fell.