Dynamic Map of Sea Level Rise
November 28, 2012
“Global warming has not slowed down, (nor is it) lagging behind the projections,” said Stefan Rahmstorf, lead author at the Potsdam Institute for Climate Impact Research that compared UN projections to what has actually happened from the early 1990s to 2011. Sea-levels are rising 60 per cent faster than the Intergovernmental Panel on Climate Change’s (IPCC) central projections. While temperature rises appear to be consistent with the projections made in the IPCC’s report (AR4), satellite measurements show that sea-levels are actually rising at a rate of 3.2 mm a year compared to the best estimate of 2 mm a year in the report.
Rahmstorf told Reuters his best estimate for sea level rise was between 50 cm and a metre this century, possibly more if greenhouse gas emissions surged. Higher temperatures would melt more ice on land and expand the water in the oceans.
Two main factors contributed to observed sea level rise. The first is thermal expansion: as ocean water warms, it expands. The second is from the contribution of land-based ice due to increased melting. The major store of water on land is found in glaciers and ice sheets. In the last century, seas rose by about 17 cm.
Below is Dynamic map of sea level rise. Visit Oceans and estuaries in the world by adjusting the gain (in meters) of the sea level: