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Sea-level rise

Sea levels will continue to rise over the 21st century and beyond, primarily because of thermal expansion within the oceans and the loss of ice sheets and glaciers on land.

Thermal expansion of the ocean is predicted to account for between 30-55% of sea-level rise over the 21st century, whilst melt-water from glaciers is predicted to account for between 15-35%. 

The basic range of projected sea-level rise in the IPCC’s AR5 is 0.26-0.98 metres by 2081-2100, relative to the average sea level over 1986-2005.


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