气候变化领域集成服务门户(CCPortal): Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained

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DOI	10.1021/acs.est.3c09516
	Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained
	Du, Qianna; Li, Bowei; Ma, Mengyue; Yao, Bo; Fang, Xuekun
发表日期	2024
ISSN	0013-936X
EISSN	1520-5851
起始页码	58
结束页码	13
卷号	58 期号:13
英文摘要	1,1-Difluoroethane (HFC-152a) is a hydrofluorocarbon regulated by the Montreal Protocol, and its emissions in China are of concern as China will regulate HFC-152a in 2024. However, no observation-inferred top-down estimates were undertaken after 2017, and substantial gaps existed among previous estimates of China's HFC-152a emissions. Using the atmospheric observations and inverse modeling, this study reveals China's HFC-152a emissions of 9.4 +/- 1.7 Gg/yr (gigagrams per year), 10.6 +/- 1.8 Gg/yr, and 9.7 +/- 1.5 Gg/yr in 2018, 2019, and 2020, respectively. In addition, we display an overall increasing trend during 2011-2020, which is in contrast to the decreasing and steady trend reported by the Emission Database for Global Atmospheric Research (EDGAR) and the Chinese government, respectively. Subsequently, we establish a comprehensive bottom-up emission inventory matching with top-down estimates and thus succeed in explaining the gaps among previous estimates. Furthermore, the contribution of China's emissions to global HFC-152a emission growth increased from 15% during 2001-2010 to >100% during 2011-2020. An emission projection based on our improved inventory shows that the Kigali Amendment (KA) would assist in avoiding 1535.6-4710.6 Gg (251.8-772.5 Tg CO2-eq) HFC-152a emissions during 2024-2100. Our findings indicate relatively accurate China's HFC-152a emissions and provide scientific support for addressing climate change and implementing the KA.
英文关键词	HFC-152a (CH3CHF2); emission gap; China; inverse modeling; climate change; Montreal Protocol
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001189154200001
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289207
作者单位	Zhejiang University; Fudan University; Fudan University; Massachusetts Institute of Technology (MIT); Peking University
推荐引用方式 GB/T 7714	Du, Qianna,Li, Bowei,Ma, Mengyue,et al. Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained[J],2024,58(13).
APA	Du, Qianna,Li, Bowei,Ma, Mengyue,Yao, Bo,&Fang, Xuekun.(2024).Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(13).
MLA	Du, Qianna,et al."Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.13(2024).