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Accelerating1 melt of ice sheets now 'unmistakable' 极地冰盖加速融化现在 “不容置疑”如果你能用格陵兰岛和南极洲在过去30年里损失的冰做成一个正方体的冰块,这个冰块将高达2万米。 Satellites able to monitor the elevation and velocity of ice have been flying routinely over the poles, now, since the early 90s. And a group of scientists, known as IMBIE (Ice Sheet Mass Balance Intercomparison Exercise), has pulled together their data to understand how Greenland and Antarctica are responding to a warming world. 自上世纪90年代初以来,能够监测冰层高度和融化速度的卫星一直在极地上空定期飞行。一组名为 “冰盖质量平衡相互比对试验(IMBIE)” 的科学家汇集了这些卫星记录的数据,以了解格陵兰岛和南极洲应对全球变暖的方式。 Combined, these ice sheets have lost 7,560 billion tonnes over the period. It's enough ice to make an ice cube2 20 kilometres or 12 miles high. The melt also pushed up sea levels by 21 millimetres. 在这段时间里,冰盖损失了75600亿吨的冰。损失的冰量足够制造一个棱长为2万米(12英里)的冰块。融冰还导致海平面上升了21毫米。 The contribution from ice sheets to total sea level rise is now 25 percent and climbing. The acceleration3 in melting means it won't be long, the IMBIE team says, before ice lost from Greenland and Antarctica is the dominant factor pushing up the height of the world's oceans. 冰盖融化目前占全球海平面上升的25%,这个数字还在攀升。“冰盖质量平衡相互比对试验” 研究小组说,冰盖融化速度的加快意味着不久之后,格陵兰岛和南极洲融化成水的冰就会成为使全球海平面上升的主要因素。 词汇表
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