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《新科学家》 2026年9月26日 · 中文解读

冰川加速流动是冰盖萎缩主因

Fast-flowing glaciers behind ice sheet shrinkage · Alec Luhn
约 5 分钟Climate change在小程序里点播,20 到 60 分钟做好
这篇讲什么
最新卫星记录显示,自20世纪80年代以来格陵兰和南极冰盖的冰量流失速度加快了四倍,其中84%源于冰川加速流入海洋,仅16%来自表面融化。格陵兰和南极在过去半个世纪已损失11.3万亿吨冰,导致海平面上升3厘米,并可能使多达900万人面临沿海洪灾风险。研究者警告,海洋与冰盖之间的反馈机制可能让未来海平面上升超出预期。
原文开头
MOST ice loss in Greenland and Antarctica isn’t due to melting at the surface. Instead, these ice sheets are shrinking mainly because glaciers are flowing faster into the ocean, raising the risk of feedback loops that could accelerate sea-level rise. While rising air temperatures thaw ice at the surface, glaciers also lose ice at the coast. Relatively warm ocean water melts the glacier’s underside and icebergs calve off its tongue, drifting equatorward to melt. The quicker a glacier flows, the more ice it will lose to the sea. The longest satellite record ever compiled shows ice loss has sped up by a factor of four since the 1980s due to global warming. …
摘自《新科学家》(New Scientist)2026年9月26日,Alec Luhn。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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