1 ½ feet (0.5 metres)

The level of the Mediterranean Sea is rising rapidly and could increase by up to half a metre in the next 50 years, scientists in Spain have warned. A study by the Spanish Oceanographic Institute says levels have been rising since the 1970s with the rate of increase growing in recent years. It says even a small rise could have serious consequences in coastal areas.

Last month, the Intergovernmental Panel on Climate Change said the world’s sea levels would rise by a maximum of 59cm this century. Some scientists believe this is an under-estimate as it does not include the influence of “enhanced” ice-cap melting, where warmer waters lubricate the flow of ice into the oceans.
BBC News, 19/1/08

see also – sea level