气候变化领域集成服务门户(CCPortal): Emergency deployment of direct air capture as a response to the climate crisis

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DOI	10.1038/s41467-020-20437-0
	Emergency deployment of direct air capture as a response to the climate crisis
	Hanna R.; Abdulla A.; Xu Y.; Victor D.G.
发表日期	2021
ISSN	20411723
卷号	12 期号:1
英文摘要	Though highly motivated to slow the climate crisis, governments may struggle to impose costly polices on entrenched interest groups, resulting in a greater need for negative emissions. Here, we model wartime-like crash deployment of direct air capture (DAC) as a policy response to the climate crisis, calculating funding, net CO2 removal, and climate impacts. An emergency DAC program, with investment of 1.2–1.9% of global GDP annually, removes 2.2–2.3 GtCO2 yr–1 in 2050, 13–20 GtCO2 yr–1 in 2075, and 570–840 GtCO2 cumulatively over 2025–2100. Compared to a future in which policy efforts to control emissions follow current trends (SSP2-4.5), DAC substantially hastens the onset of net-zero CO2 emissions (to 2085–2095) and peak warming (to 2090–2095); yet warming still reaches 2.4–2.5 °C in 2100. Such massive CO2 removals hinge on near-term investment to boost the future capacity for upscaling. DAC is most cost-effective when using electricity sources already available today: hydropower and natural gas with renewables; fully renewable systems are more expensive because their low load factors do not allow efficient amortization of capital-intensive DAC plants. © 2021, The Author(s).
scopus关键词	carbon dioxide; climate change; economics; electricity; energy resource; environmental monitoring; greenhouse effect; procedures; Carbon Dioxide; Climate Change; Electricity; Energy-Generating Resources; Environmental Monitoring; Global Warming
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177164
作者单位	Center for Energy Research, University of California San Diego, La Jolla, CA 92093, United States; Deep Decarbonization Initiative, University of California San Diego, La Jolla, CA 92093, United States; Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada; Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States; School of Global Policy and Strategy, University of California San Diego, La Jolla, CA 92093, United States; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, United States; The Brookings Institution, Washington, DC 20036, United States
推荐引用方式 GB/T 7714	Hanna R.,Abdulla A.,Xu Y.,et al. Emergency deployment of direct air capture as a response to the climate crisis[J],2021,12(1).
APA	Hanna R.,Abdulla A.,Xu Y.,&Victor D.G..(2021).Emergency deployment of direct air capture as a response to the climate crisis.Nature Communications,12(1).
MLA	Hanna R.,et al."Emergency deployment of direct air capture as a response to the climate crisis".Nature Communications 12.1(2021).