Third part of Antarctic at risk of collapse due to global warming

Third part of Antarctic at risk of collapse due to global warming

New Delhi: According to a study, over one-third of Antarctic ice may be in danger of falling into the sea if global temperatures are four degrees Celsius above pre-industrial levels.
This research, published in the Journal of Geophysical Research Letters, found that 67 percent of the ice on the Antarctic Peninsula would be under the threat of instability, including about 3.4 million square feet of Antarctic ice-sheltered area on the Antarctic Peninsula, including 67 percent of the ice shelf area. Such a warming scenario.
The team also identified the largest remaining ice shelf on the Larsen Sea-Pensula, which split in 2017 as the giant A68 iceberg – as one of four ice shelves that pose a threat, especially in a hot climate Will happen.
Ella Gilbert of the University of Reading in Britain said, “Ice shelves prevent glaciers on land from allowing the glacier to flow freely into the sea and contribute to sea level rise.”
“When they fall, it is extracted from a bottle like a giant cork, allowing the glaciers to pour water into the ocean,” Gilbert said.
The researchers noted that the temperature is limited to two degrees Celsius instead of four degrees Celsius, putting the area at risk, and potentially significant sea-level rise can be avoided.
He notes that when the snow melts on the surface of the ice, it can fracture and collapse them brilliantly.
Previous research has given scientists the bigger picture in terms of predicting the Antarctic ice shelf decline.
However, the new study uses the latest modeling techniques to fill in fine detail and provide more accurate estimates.
“The findings highlight the importance of limiting the global temperature set out in the Paris Agreement if we are to avoid the worst consequences of climate change, including rising sea levels,” Gilbert said. said.
The study used state-of-the-art, high-resolution regional climate modeling that predicts in greater detail the effects of increased melting and water runoff on ice shelf stability.
The team said that ice shelf vulnerability from this fracturing process was forecast under 1.5, 2, and 4 ° C global warming scenarios, which are all possible in this century.
The ice shelves are permanent floating platforms of ice attached to the beach areas and are formed from where the glaciers flowing over the land meet the sea, he said.
Researchers identified Larsen C, Shackleton, Pine Island and Wilkins ice shelves as the most threatened under four degrees of warming due to geography, and predicted significant runoff in those areas.
“If temperatures continue to rise, we may lose more Antarctic ice shelves in the coming decades,” Gilbert said.

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