论文部分内容阅读
<正>According to the IPCC Fourth Assessment Re-port (AR4) [IPCC, 2007], the global mean surface tem-perature in 2100 is projected to be 1.1-6.4 C higher than the 1980-1999 mean state, with the best estima-tion of increase at 1.8-4.0 C. It should be n