气候变化领域集成服务门户(CCPortal): Efficiency stagnation in global steel production urges joint supply- and demand-side mitigation efforts

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DOI	10.1038/s41467-021-22245-6
	Efficiency stagnation in global steel production urges joint supply- and demand-side mitigation efforts
	Wang P.; Ryberg M.; Yang Y.; Feng K.; Kara S.; Hauschild M.; Chen W.-Q.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Steel production is a difficult-to-mitigate sector that challenges climate mitigation commitments. Efforts for future decarbonization can benefit from understanding its progress to date. Here we report on greenhouse gas emissions from global steel production over the past century (1900-2015) by combining material flow analysis and life cycle assessment. We find that ~45 Gt steel was produced in this period leading to emissions of ~147 Gt CO2-eq. Significant improvement in process efficiency (~67%) was achieved, but was offset by a 44-fold increase in annual steel production, resulting in a 17-fold net increase in annual emissions. Despite some regional technical improvements, the industry’s decarbonization progress at the global scale has largely stagnated since 1995 mainly due to expanded production in emerging countries with high carbon intensity. Our analysis of future scenarios indicates that the expected demand expansion in these countries may jeopardize steel industry’s prospects for following 1.5 °C emission reduction pathways. To achieve the Paris climate goals, there is an urgent need for rapid implementation of joint supply- and demand-side mitigation measures around the world in consideration of regional conditions. © 2021, The Author(s).
语种	英语
scopus关键词	carbon; hydrogen; steel; demand-side management; detection method; emission control; life cycle analysis; material flow analysis; technological development; Article; biomass; carbon footprint; China; climate; electrolysis; Europe; exhaust gas; furnace; India; iron and steel industry; life cycle assessment; lifestyle modification; reduction (chemistry); retirement
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/250725
作者单位	Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; Sustainability in Manufacturing and Life Cycle Engineering Research Group, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, Australia; Quantitative Sustainability Assessment Group, Sustainability Division, Department of Technology, Management and Economics, Technical University of Denmark, Kgs, Lyngby, Denmark; Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing, China; Environmental Studies Program, Dartmouth College, Hanover, NH, United States; Institute of Blue and Green Development, Shandong University, Weihai, China; Department of Geographical Sciences, University of Maryland, College Park, MD, United States; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Wang P.,Ryberg M.,Yang Y.,et al. Efficiency stagnation in global steel production urges joint supply- and demand-side mitigation efforts[J],2021,12(1).
APA	Wang P..,Ryberg M..,Yang Y..,Feng K..,Kara S..,...&Chen W.-Q..(2021).Efficiency stagnation in global steel production urges joint supply- and demand-side mitigation efforts.Nature Communications,12(1).
MLA	Wang P.,et al."Efficiency stagnation in global steel production urges joint supply- and demand-side mitigation efforts".Nature Communications 12.1(2021).