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Optimizing Vehicular CO2 Emission Factors in Tunnel Environment: Integrating Mobile Measurements and Radiocarbon Tracing

文献类型：期刊论文

作者Wang, Peng3,4,5; Fu, Haokang2; Zhou, Weijian4,5; Wu, Shugang4,5; Lu, Xuefeng4,5; Du, Hua4,5; Niu, Zhenchuan3,4,5; Xiong, Xiaohu4,5; Cheng, Peng1,4,5
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2026-04-06
卷号131期号:7页码:11
关键词vehicular CO2 emission factors tunnel model optimation radiocarbon tracing
ISSN号2169-897X
DOI10.1029/2025JD045275
通讯作者Zhou, Weijian(weijian@loess.llqg.ac.cn)
英文摘要We developed a novel approach that integrates mobile CO2 measurements and radiocarbon (Delta 14C) tracing to optimize vehicle emission factors (EFs) within an urban tunnel environment. High-resolution mobile measurements revealed the spatial distribution of CO2 concentrations, showing that CO2 concentrations do not increase monotonically from the tunnel entrance to the exit. Instead, they remain stable or even decrease initially and then gradually increase. This suggests that the arbitrary selection of sampling locations within tunnels could result in underestimating EFs. Based on CO2 profiles, we selected three stationary sampling locations for CO2 measurements and Delta 14C analysis. The results show that non-vehicle emissions, such as passenger respiration and infiltrated ambient air, accounted for 6.7%-9.9% of the CO2 enhancement in the tunnel. Neglecting these sources could result in an overestimation of vehicular CO2 EFs by up to 11.2%, with an average overestimation of 5.4%. The optimized approach significantly reduced estimation bias and identified notable seasonal and weekday/weekend variations in EFs. These findings highlight the importance of refined sampling strategies and source identification in accurately quantifying vehicle CO2 emissions and supporting effective emission reduction policies.
WOS关键词FOSSIL-FUEL CO2 ; URBAN
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China[42303015] ; National Natural Science Foundation of China[42330114] ; Cultivation Program of State Key Laboratory of Loess Science[SKLLQGPY2407]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001733296800001
出版者AMER GEOPHYSICAL UNION
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Cultivation Program of State Key Laboratory of Loess Science
源URL[http://ir.ieecas.cn/handle/361006/17833]  
专题地球环境研究所_加速器质谱中心
通讯作者Zhou, Weijian
作者单位1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Peoples R China
3.Shaanxi Guanzhong Plain Ecol Environm Change & Com, Xian, Peoples R China
4.Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry Tech, Xian, Peoples R China
5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Sci, Xian, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Peng,Fu, Haokang,Zhou, Weijian,et al. Optimizing Vehicular CO2 Emission Factors in Tunnel Environment: Integrating Mobile Measurements and Radiocarbon Tracing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2026,131(7):11.
APA Wang, Peng.,Fu, Haokang.,Zhou, Weijian.,Wu, Shugang.,Lu, Xuefeng.,...&Cheng, Peng.(2026).Optimizing Vehicular CO2 Emission Factors in Tunnel Environment: Integrating Mobile Measurements and Radiocarbon Tracing.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,131(7),11.
MLA Wang, Peng,et al."Optimizing Vehicular CO2 Emission Factors in Tunnel Environment: Integrating Mobile Measurements and Radiocarbon Tracing".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 131.7(2026):11.

入库方式： OAI收割

来源：地球环境研究所

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