"Global sea levels could rise by more than three metres ? over half a metre more than previously thought ? this century alone, according to a new study co-authored by a University of Southampton scientist. An international team including Sybren Drijfhout, Professor in Physical Oceanography and Climate Physics, looked at what might happen if carbon dioxide emissions continue unabated. Using new projections of Antarctic mass loss and a revised statistical method, they concluded that a worst-case scenario of a 2.5 to three-metre sea level rise was possible by 2100.