Sea levels may rise as much as 150cm by 2100, the latest figures show. The range indicated by several new studies is between 50cm and 150cm, according to Dr Tim Naish, director of the Antarctic Research Centre at Victoria University.
The glaciologist, who was chief scientist on a major Antarctic drill-core project, says the latest "range of plausible sea level rise" is based on observations to calculate how much water would come from polar ice sheets.
The Intergovernmental Panel on Climate Change (IPCC) warned in its 4th Assessment Report in 2007 that the best estimate for sea level rise then was 18cm to 59cm by 2100 - but it did not take into account any "future rapid dynamical changes in ice flow" because more research was needed.
Naish was speaking ahead of the climate change talks in Copenhagen later this month. He notes that any sea level rise would not be evenly spread across the globe. Satellite observations over 10 years of changes in the surface elevation, flow and mass of ice had started showing trends for loss of mass in both Greenland, and West Antarctica. "That trend is accelerating" he says.
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http://tvnz.co.nz/world-news/predictions-sea-levels-could-rise-higher-3136706