气候变化领域集成服务门户(CCPortal): Ambitious efforts on residual emissions can reduce CO2 removal and lower peak temperatures in a net-zero future

CCPortal

DOI	10.1088/1748-9326/ad456d
	Ambitious efforts on residual emissions can reduce CO2 removal and lower peak temperatures in a net-zero future
	Fuhrman, Jay; Speizer, Simone; O'Rourke, Patrick; Peters, Glen P.; Mcjeon, Haewon; Monteith, Seth; Lopez, Laura Aldrete; Wang, Frances M.
发表日期	2024
ISSN	1748-9326
起始页码	19
结束页码	6
卷号	19 期号:6
英文摘要	Carbon dioxide removal (CDR) is expected to play a critical role in reaching net zero CO2 and especially net zero greenhouse gase (GHG) emissions. However, the extent to which the role of CDR in counterbalancing residual emissions can be reduced has not yet been fully quantified. Here, we use a state-of-the-art integrated assessment model to develop a 'Maximum Sectoral Effort' scenario which features global emissions policies alongside ambitious effort across sectors to reduce their gross GHG emissions and thereby the CDR required for offsets. We find that these efforts can reduce CDR by over 50% globally, increase both the relative and absolute role of the land sink in storing carbon, and more evenly distribute CDR contributions and associated side-effects across regions compared to CO2 pricing alone. Furthermore, the lower cumulative CO2 and nonCO(2) emissions leads to earlier and lower peak temperatures. Emphasizing reductions in gross, in addition to net emissions while disallowing the substitution of less durable CDR for offsets can therefore reduce both physical and transition risks associated with high CDR deployment and temperature overshoot.
英文关键词	net-zero; CO2 removal; climate change; negative emissions
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001222368600001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293326
作者单位	University System of Maryland; University of Maryland College Park; United States Department of Energy (DOE); Pacific Northwest National Laboratory
推荐引用方式 GB/T 7714	Fuhrman, Jay,Speizer, Simone,O'Rourke, Patrick,et al. Ambitious efforts on residual emissions can reduce CO2 removal and lower peak temperatures in a net-zero future[J],2024,19(6).
APA	Fuhrman, Jay.,Speizer, Simone.,O'Rourke, Patrick.,Peters, Glen P..,Mcjeon, Haewon.,...&Wang, Frances M..(2024).Ambitious efforts on residual emissions can reduce CO2 removal and lower peak temperatures in a net-zero future.ENVIRONMENTAL RESEARCH LETTERS,19(6).
MLA	Fuhrman, Jay,et al."Ambitious efforts on residual emissions can reduce CO2 removal and lower peak temperatures in a net-zero future".ENVIRONMENTAL RESEARCH LETTERS 19.6(2024).