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Sea-Level Riddle

机译:海平面之谜

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摘要

Are the Greenland and Antarctic ice sheets our friends, which will moderate sea-level rise over the next century as polar snowfall increases? Or are they ticking bombs, soon to unleash floods on the world's coasts? The uncomfortable fact is that while the ice is looking less and less friendly (see "Measuring the Polar Meltdown," p. 54), we're really not sure. The United States has joined almost 200 other countries in seeking "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system" under Article Two of the U.N. Framework Convention on Climate Change. Exactly what constitutes "dangerous interference" can be debated, but substantial ice-sheet shrinkage causing meters of sea-level rise is a strong candidate.
机译:格陵兰和南极冰盖是我们的朋友吗?随着极地降雪的增加,这将在下一世纪缓和海平面上升吗?还是他们正在滴炸弹,很快释放出世界海岸的洪水?令人不安的事实是,尽管冰看起来越来越不友好(请参见“测量极地融化”,第54页),但我们确实不确定。根据《联合国气候变化框架公约》第二条,美国已与其他近200个国家一起寻求“将大气中温室气体的浓度稳定在一定水平,以防止人为干扰气候系统”。究竟是什么构成“危险干扰”是可以争论的,但是引起海平面上升几米的巨大冰盖收缩是一个强有力的选择。

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