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North Atlantic warming and the retreat of Greenland's outlet glaciers

机译:北大西洋变暖和格陵兰出口冰川的退缩

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摘要

Mass loss from the Greenland ice sheet quadrupled over the past two decades, contributing a quarter of the observed global sea-level rise. Increased submarine melting is thought to have triggered the retreat of Greenland's outlet glaciers, which is partly responsible for the ice loss. However, the chain of events and physical processes remain elusive. Recent evidence suggests that an anomalous inflow of subtropical waters driven by atmospheric changes, multidecadal natural ocean variability and a long-term increase in the North Atlantic's upper ocean heat content since the 1950s all contributed to a warming of the subpolar North Atlantic. This led, in conjunction with increased runoff, to enhanced submarine glacier melting. Future climate projections raise the potential for continued increases in warming and ice-mass loss, with implications for sea level and climate.
机译:在过去的二十年中,格陵兰冰原的质量损失增加了三倍,占全球观测到的海平面上升的四分之一。人们认为,海底融化的增加引发了格陵兰岛出口冰川的退缩,这在一定程度上造成了冰的流失。但是,事件和物理过程链仍然难以捉摸。最新证据表明,自1950年代以来,由于大气变化,多年代际自然海洋变率以及北大西洋高海洋热量含量的长期增加而引起的亚热带水异常流入,都导致了北极亚极变暖。这与增加的径流一起导致海底冰川融化增强。未来的气候预测增加了气候变暖和冰量损失持续增加的可能性,这将影响海平面和气候。

著录项

  • 来源
    《Nature》 |2013年第7478期|36-43|共8页
  • 作者单位

    Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA;

    Department of Earth, Atmospheric, and Planetary Sciences,Vlassachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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