To help these most vulnerable communities, it is essential for the world to devise a plan of action to limit the emission of greenhouse gases (GHGs). Several scenarios have been assessed by the IPCC, and one that would limit future temperature increase to between 2.0-2.4˚C would require that emissions peak no later than 2015, and decline thereafter.
为了帮助受灾最严重的地区，全世界必须制定一套行动计划来限制温室气体（GHG）的排放。IPCC对几种情况做了评估，其中一种可以把未来气温的升高限制在2.0-2.4˚C之间，但要求必须在2015年之前达到排放高峰，然后逐步减少。然后，减少的速度将决定避免气候变化最糟糕的后果发生的几率。