气候变化领域集成服务门户(CCPortal): The quest for improved air quality may push China to continue its CO2reduction beyond the Paris Commitment

CCPortal

DOI	10.1073/pnas.2013297117
	The quest for improved air quality may push China to continue its CO2reduction beyond the Paris Commitment
	Xing J.; Lu X.; Wang S.; Wang T.; Ding D.; Yu S.; Shindell D.; Ou Y.; Morawska L.; Li S.; Ren L.; Zhang Y.; Loughlin D.; Zheng H.; Zhao B.; Liu S.; Smith K.R.; Hao J.
发表日期	2020
ISSN	0027-8424
起始页码	29535
结束页码	29542
卷号	117 期号:47
英文摘要	China is challenged with the simultaneous goals of improving air quality and mitigating climate change. The "Beautiful China" strategy, launched by the Chinese government in 2020, requires that all cities in China attain 35 μg/m3 or below for annual mean concentration of PM2.5 (particulate matter with aerodynamic diameter less than 2.5 μm) by 2035. Meanwhile, China adopts a portfolio of low-carbon policies to meet its Nationally Determined Contribution (NDC) pledged in the Paris Agreement. Previous studies demonstrated the cobenefits to air pollution reduction from implementing low-carbon energy policies. Pathways for China to achieve dual targets of both air quality and CO2mitigation, however, have not been comprehensively explored. Here, we couple an integrated assessment model and an air quality model to evaluate air quality in China through 2035 under the NDC scenario and an alternative scenario (Co-Benefit Energy [CBE]) with enhanced low-carbon policies. Results indicate that some Chinese cities cannot meet the PM2.5target under the NDC scenario by 2035, even with the strictest end-of-pipe controls. Achieving the air quality target would require further reduction in emissions of multiple air pollutants by 6 to 32%, driving additional 22% reduction in CO2emissions relative to the NDC scenario. Results show that the incremental health benefit from improved air quality of CBE exceeds 8 times the additional costs of CO2mitigation, attributed particularly to the cost-effective reduction in household PM2.5 exposure. The additional low-carbon energy polices required for China's air quality targets would lay an important foundation for its deep decarbonization aligned with the 2 °C global temperature target. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Air quality; China; CO2; Cobenefit; Energy policy
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160714
作者单位	Xing, J., School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China; Lu, X., School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China; Wang, S., School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China; Wang, T., School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China, State Environmental Protection Key Laboratory of ...
推荐引用方式 GB/T 7714	Xing J.,Lu X.,Wang S.,et al. The quest for improved air quality may push China to continue its CO2reduction beyond the Paris Commitment[J],2020,117(47).
APA	Xing J..,Lu X..,Wang S..,Wang T..,Ding D..,...&Hao J..(2020).The quest for improved air quality may push China to continue its CO2reduction beyond the Paris Commitment.Proceedings of the National Academy of Sciences of the United States of America,117(47).
MLA	Xing J.,et al."The quest for improved air quality may push China to continue its CO2reduction beyond the Paris Commitment".Proceedings of the National Academy of Sciences of the United States of America 117.47(2020).