Unavoidable future increase in West Antarctic ice-shelf melting over the twenty-first century

Unavoidable future increase in West Antarctic ice-shelf melting over the twenty-first century
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二十一世纪南极西部冰架融化的未来不可避免的增加

DOI:
10.1038/s41558-023-01818-x
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发表时间:
2023
影响因子:
30.7
通讯作者:
Naughten K
Naughten K
中科院分区:
地球科学1区
文献类型:
--
作者:
Naughten K

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海洋驱动的阿蒙森海漂浮冰架融化是目前控制南极洲对海平面上升贡献的主要过程。利用地区性海洋模式,我们提出了阿蒙森海未来冰架融化的一套全面预测。我们发现,随着冰架融化的广泛增加,包括对冰盖稳定至关重要的地区,海洋迅速变暖的速度可能会在21世纪发生,其速度大约是历史的三倍。当考虑到内部气候变化时,中期排放情景与《巴黎协定》最雄心勃勃的目标之间没有显著差异。这些结果表明,现在减缓温室气体对防止海洋变暖的作用有限,因为海洋变暖可能会导致西南极冰盖的崩溃。
Ocean-driven melting of floating ice-shelves in the Amundsen Sea is currently the main process controlling Antarctica’s contribution to sea-level rise. Using a regional ocean model, we present a comprehensive suite of future projections of ice-shelf melting in the Amundsen Sea. We find that rapid ocean warming, at approximately triple the historical rate, is likely committed over the twenty-first century, with widespread increases in ice-shelf melting, including in regions crucial for ice-sheet stability. When internal climate variability is considered, there is no significant difference between mid-range emissions scenarios and the most ambitious targets of the Paris Agreement. These results suggest that mitigation of greenhouse gases now has limited power to prevent ocean warming that could lead to the collapse of the West Antarctic Ice Sheet.
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DOI: --
发表时间: 2007
期刊:
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