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。