The rise in global sea levels has accelerated since the 1990s amid rising temperatures, with a thaw of Greenland’s ice sheet pouring ever more water into the oceans, scientists said in a new report.
The annual rate of sea level rise increased to 3.3 millimetres (0.13 inch) in 2014 – a rate of 33 centimetres (13 inches) if kept unchanged for a century – from 2.2 mm in 1993, according to a team of scientists in China, Australia and the United States.
Sea levels have risen by about 20 cms in the past century and many scientific studies project a steady acceleration this century as man-made global warming melts more ice on land.
The confirmation of a quickening rise “highlights the importance and urgency” of working out ways to cut greenhouse gas emissions and to protect low-lying coasts, the scientists wrote in the journal Nature Climate Change.
A thaw of Greenland’s ice sheet accounted for more than 25 percent of the sea level rise in 2014 against just 5 percent in 1993, according to the study led by Xianyao Chen of the Ocean University of China China and Qingdao National Laboratory of Marine Science and Technology.
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