Scientists say 'unimaginable amounts' of water will pour into oceans if ice shelves collapse amid global heating
-“Ice shelves are important buffers, preventing glaciers on land from flowing freely into the ocean and contributing to sea level rise,” said Ella Gilbert, who co-authored the study.



A new study published in the journal Geophysical Research Letters found that one-third of ice shelves surrounding Antarctica could collapse if temperatures hit 4 degrees Celsius above pre-industrial levels, resulting in “unimaginable amounts” of water being released into the sea.


Ice shelves, which are vast floating sheets of ice that connect to land, largely surround Antarctica.


“Ice shelves are important buffers, preventing glaciers on land from flowing freely into the ocean and contributing to sea level rise,” Ella Gilbert, a research scientist in the University of Reading’s meteorology department who co-authored the study, said. “When they collapse it’s like a giant cork being removed from a bottle, allowing unimaginable amounts of water from glaciers to pour into the sea.”

“冰架是重要的緩沖帶,它阻止陸地上的冰川自由流入海洋,導致海平面上升,”雷丁大學氣象系的研究科學家、該研究的合著者艾拉·吉爾伯特說?!爱敱ū浪鷷r,就像一個巨大的軟木塞從瓶子里被移開,讓難以想象的數量的冰川水流入大海?!?br>原創翻譯:龍騰網 轉載請注明出處

One-third of these ice shelves is about the equivalent of half a million square kilometers. The surge in water from their collapse would cause sea levels to rise.


The study doesn’t cite an estimate of the level of rise if could cause, but Gilbert said, “My gut feeling is for 4C it could potentially contribute tens of centimetres if they did collapse.”


To put this in perspective, NASA calculates the average sea level rise at 3.3 millimeters per year, which only equals 0.33 centimeters, making even a 10-centimeter increase a significant jump.


A rise in sea levels contributes to the erosion of coastlines, more powerful storms and flooding, and the destruction of ecosystems and habitats for animals both on land and in the sea.


The study is meant to highlight the need for limiting global warming to less than 2 degrees C above preindustrial levels, as outlined in the 2015 Paris climate agreement.


Former President Trump withdrew the United States from the Paris agreement on June 1, 2017. President Biden signed an executive order having the U.S. rejoin the Paris agreement on his first day in office.

原創翻譯:龍騰網 轉載請注明出處

“If temperatures continue to rise at current rates we may lose more Antarctic ice shelves in the coming decades,” Gilbert said. “Limiting warming will not just be good for Antarctica – preserving ice shelves means less global sea level rise, and that’s good for us all.”

“如果氣溫繼續以目前的速度上升,我們可能會在未來幾十年失去更多的南極冰架,”吉爾伯特說?!跋拗谱兣粌H對南極洲有好處——保存冰架意味著減少全球海平面上升,這對我們所有人都有好處?!?br />