Massive Antarctic glacier could lose all its ice in 150 years, scientists warn

Part of Thwaites Glacier crumbles into the ocean. It is part of the normal life of a glacier, but the rate of ice flow into the ocean of some Antarctic glaciers has markedly accelerated, raising concerns.

The resulting sea-level rise would be two-and-a-half times bigger than the 20cm increase since pre-global warming levels of the late 19th century, the NASA-funded study found. The resulting sea-level rise would be two-and-a-half times bigger than the 20cm increase since pre-global warming levels of the late 19th century Current sea levels are nearly eight inches above pre-global warming levels and are blamed for increased coastal flooding across the world. The glacier is among five that have doubled their rate of ice loss in the last six years, according to the National Science Foundation.

The warnings were based on the latest simulations of hidden ‘instabilities’ underneath Antarctica’s glaciers. The researchers explained huge ice shelves rested on the continent’s bedrock beneath the water line. As the glaciers melt, more of the bedrock is exposed to the sea. The point where the overhanging glacier, sea and bedrock meet is called the ‘grounding line’.The models also revealed triggering the instability could speed up the effects of global warming.

Thwaites Glacier’s outer edge. As the glacier flows into the ocean, it becomes sea ice and drives up sea level. Thwaites Glacier ice is flowing particularly fast, and some researchers believe it may have already tipped into instability or be near that point, though this has not yet been established.

And, it may not...🤔

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