If global temperatures exceed the two-degree ceiling significantly, adaptation costs could reach double the worst-case figures, placing a crippling burden on the world economy. If world leaders needed another compelling reason to reach a deal in Paris that keeps global temperatures below the target, this is it.
如果全球气温大幅超过两摄氏度的上限，适应成本将达到最坏情形数字的两倍，世界经济将不堪重负。如果世界领导人还需要其他理由才愿意在巴黎达成将全球气温限制在该目标以下的协议的话，上面的计算就是了。