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A third of Antarctic ice shelf risks collapse as our planet warms

April 8, 2021. Summarized by summa-bot.

Compression ratio: 17.9%. 1 min read.

UNSPECIFIED, ANTARCTICA - OCTOBER 31: The western edge of the famed iceberg A-68 (TOP R), calved from the Larsen C ice shelf, is seen from NASA's Operation IceBridge research aircraft, near the coast of the Antarctic Peninsula region, on October 31, 2017, above Antarctica. The massive iceberg was measured at approximately the size of Delaware when it first calved in July. NASA's Operation IceBridge has been studying how polar ice has evolved over the past nine years and is currently flying a set of nine-hour research flights over West Antarctica to monitor ice loss aboard a retrofitted 1966 Lockheed P-3 aircraft. According to NASA, the current mission targets 'sea ice in the Bellingshausen and Weddell seas and glaciers in the Antarctic Peninsula and along the English and Bryan Coasts.' Researchers have used the IceBridge data to observe that the West Antarctic Ice Sheet may be in a state of irreversible decline directly contributing to rising sea levels. The National Climate Assessment, a study produced every 4 years by scientists from 13 federal agencies of the U.S. government, released a stark report November 2 stating that global temperature rise over the past 115 years has been primarily caused by 'human activities, especially emissions of greenhouse gases'. (Photo by Mario Tama/Getty Images)

More than a third of the Antarctic ice shelf risks collapsing into the sea if global temperatures reach 4 degrees Celsius (7.2 degrees Fahrenheit) above pre-industrial levels as climate change warms the world, a new study from the UK's University of Reading has warned.

London (CNN)More than a third of the Antarctic ice shelf risks collapsing into the sea if global temperatures reach 4 degrees Celsius (7. 2 degrees Fahrenheit) above pre-industrial levels as climate change warms the world, a new study from the UK's University of Reading has warned.

They can help limit the rise in global sea levels by acting like a dam, slowing the flow of melting ice and water into the oceans.

In the new study, which used high-resolution regional climate modeling to predict the impact of increased melting and water runoff on ice shelf stability, researchers say that limiting temperature rise to 2 degrees Celsius rather than 4 degrees Celsius would halve the area at risk and potentially avoid significant sea level rise.

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