Polar glaciers melting very quickly and could raise seal levels by 18 inches or more within months

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https://www.theguardian.com/world/2021/dec/18/scientists-watch-giant-doomsday-glacier-in-antarctica-with-concern

Scientists watch giant ‘doomsday’ glacier in Antarctica with concern

Cracks and fissures stoke fears of breakup that could lead to half-metre rise in global sea levels – or more

Satellite view of Antarctica with the Thwaites glacier marked in red.
Satellite view of Antarctica with the Thwaites glacier marked in red.Photograph: UniversalImagesGroup/UIG/Getty Images

John Vidal Sat 18 Dec 2021 03.00 EST

Twenty years ago, an area of ice thought to weigh almost 500bn tonnes dramatically broke off the Antarctic continent and shattered into thousands of icebergs into the Weddell Sea.

The 1,255-sq-mile (3,250-sq-km) Larsen B ice shelf was known to be melting fast but no one had predicted that it would take just one month for the 200-metre-thick behemoth to completely disintegrate.

Glaciologists were shocked as much by the speed as by the scale of the collapse. “This is staggering. It’s just broken apart. It fell over like a wall and has broken as if into hundreds of thousands of…

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