Anything much higher than that could lead to catastrophic rises in sea levels, increases in extreme weather events such as hurricanes, flooding and drought, falling agricultural production and, perhaps, famine and mass population movement.

• 但只要升温的幅度高于这一估计的下限值，海平面将灾难性地升高，同时增加极端气候事件的发生，如飓风、水、旱、业减产，还可能导致饥荒和大规模的人口迁移。