World sea levels to rise 1.5m by 2100: scientists

By Karin Strohecker

VIENNA (Reuters) - Melting glaciers, disappearing ice sheets and warming water could lift sea levels by as much as 1.5 meters (4.9 feet) by the end of this century, displacing tens of millions of people, new research showed on Tuesday.

Presented at a European Geosciences Union conference, the research forecasts a rise in sea levels three times higher than that predicted by the Intergovernmental Panel on Climate Change (IPCC) last year. The U.N. climate panel shared the 2007 Nobel Peace Prize with former U.S. Vice President Al Gore.

Svetlana Jevrejeva of the Proudman Oceanographic Laboratory in Britain said the estimate was based on a new model allowing accurate reconstruction of sea levels over the past 2,000 years.

"For the past 2,000 years, the sea level was very stable," she told journalists on the margins of the Vienna meeting.

But the pace at which sea levels are rising is accelerating, and they will be 0.8-1.5 meters higher by next century, researchers including Jevrejeva said in a statement.

Sea levels rose 2 cm in the 18th century, 6 cm in the 19th century and 19 cm last century, she said, adding: "It seems that rapid rise in the 20th century is from melting ice sheets".

Scientists fiercely debate how much sea levels will rise, with the IPCC predicting increases of between 18 cm and 59 cm.

"The IPCC numbers are underestimates," said Simon Holgate, also of the Proudman Laboratory.