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Submission + - Fastest Sea Rise in at Least 2800 Years (www.cbc.ca)

Submitted by Layzej
Layzej writes: A new study finds that sea levels on Earth are rising several times faster than they have in the past 2,800 years and are accelerating. Co-author Stefan Rahmstorf explains that the fact that the rise in the 20th century is so large is a logical physical consequence of man-made global warming. This is melting continental ice and thus adds extra water to the oceans. In addition, as the sea water warms up it expands. The data from the past can also be used for future projections, using a so-called semi-empirical model calibrated with the historically observed relationship between temperature and sea level. With the new data, this results in a projected increase in the 21st century of 24-131 cm, depending on our emissions and thus on the extent of global warming.

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