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The news that out our sea level is rising is not news but the increased speed of it is – the rise of 20 cms in 100 years is about twice the predicted amount. Whether the increase remains at that rate or increases is probably a mixture of what we decide to do and what impacts we have on the planet that are yet unknown.
If you want to find out more this article is worth reading.

West Antarctica is warming almost twice as fast as previously believed, adding to worries of a thaw that would add to sea level rise from San Francisco to Shanghai, a study showed on Sunday.

Annual average temperatures at the Byrd research station in West Antarctica had risen 2.4 degrees Celsius (4.3F) since the 1950s, one of the fastest gains on the planet and three times the global average in a changing climate, it said.

The unexpectedly big increase adds to fears the ice sheet is vulnerable to thawing. West Antarctica holds enough ice to raise world sea levels by at least 3.3 metres (11 feet) if it ever all melted, a process that would take centuries.

“The western part of the ice sheet is experiencing nearly twice as much warming as previously thought,” Ohio State University said in a statement of the study led by its geography professor David Bromwich.

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