清华大学(现有能源基础设施锁定排放威胁1.5℃气候目标).pdf
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Letter /10.1038/s41586-019-1364-3
Committed emissions from existing energy
infrastructure jeopardize 1.5 °C climate target 1,2 2 2,3 3 4 1 1 1,2,5
Dan tong , Qiang Zhang *, Yixuan Zheng , Ken Caldeira , Christine Shearer , Chaopeng Hong , Yue Qin & Steven J. Davis * 5
Net anthropogenic emissions of carbon dioxide (CO ) must (420–580 gigatonnes CO ) , and perhaps two-thirds of the 2 2
approach zero by mid-century (2050) in order to stabilize the global remaining carbon budget if mean warming is to be limited to 1–5 less than 2 °C (1,170–1,500 gigatonnes CO 5
mean temperature at the level targeted by international efforts . 2) . The remaining
Yet continued expansion of fossil-fuel-burning energy infrastructure carbon budget estimates are varied and nuanced14,15, and depend
implies alrea