气候变化领域集成服务门户(CCPortal): Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China

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DOI	10.5194/acp-22-11845-2022
	Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China
	Li, Mengying; Yu, Shaocai; Chen, Xue; Li, Zhen; Zhang, Yibo; Song, Zhe; Liu, Weiping; Li, Pengfei; Zhang, Xiaoye; Zhang, Meigen; Sun, Yele; Liu, Zirui; Sun, Caiping; Jiang, Jingkun; Wang, Shuxiao; Murphy, Benjamin N.; Alapaty, Kiran; Mathur, Rohit; Rosenfeld, Daniel; Seinfeld, John H.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	11845
结束页码	11866
卷号	22 期号:17 页码:22
英文摘要	Condensable particulate matter (CPM) emitted from stationary combustion and mobile sources exhibits high emissions and a large proportion of organic components. However, CPM is not generally measured when conducting emission surveys of PM in most countries, including China. Consequently, previous emission inventories have not included emission rates for CPM. Here, we construct an emission inventory of CPM in China with a focus on organic aerosols (OAs) based on collected CPM emission information. Results show that OA emissions are enhanced twofold after the inclusion of CPM in a new inventory for China for the years 2014 and 2017. Considering organic CPM emissions and model representations of secondary OA (SOA) formation from CPM, a series of sensitivity cases have been simulated here using the three-dimensional Community Multiscale Air Quality (CMAQ) model to estimate the contributions of CPM emissions to atmospheric OA and fine PM (PM2.5, particulate matter with aerodynamic diameter not exceeding 2.5 mu m) concentrations in China. Compared with observations at a Beijing site during a haze episode from 14 October to 14 November 2014, estimates of the temporal average primary OA (POA) and SOA concentrations were greatly improved after including the CPM effects. These scenarios demonstrated the significant contributions of CPM emissions from stationary combustion and mobile sources to the POA (51 %-85 %), SOA (42 %-58 %), and total OA concentrations (45 %-75 %). Furthermore, the contributions of CPM emissions to total OA concentrations were demonstrated over the 2 major cities and 26 other cities of the Beijing-Tianjin-Hebei region (hereafter referred to as the BTH2 + 26 cities) in December 2018, with average contributions of up to 49 %, 53 %, 54 %, and 50 % for Handan, Shijiazhuang, Xingtai, and Dezhou, respectively. Correspondingly, the inclusion of CPM emissions also narrowed the gap between simulated and observed PM2.5 concentrations over the BTH2 + 26 cities. These results improve the simulation performance of atmospheric OA and PM2.5 and may also provide important implications for the sources of OA.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000855518000001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273517
作者单位	Zhejiang University; Hebei Agricultural University; China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Institute of Urban Environment, CAS; Tsinghua University; United States Environmental Protection Agency; Hebrew University of Jerusalem; California Institute of Technology
推荐引用方式 GB/T 7714	Li, Mengying,Yu, Shaocai,Chen, Xue,et al. Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China[J],2022,22(17):22.
APA	Li, Mengying.,Yu, Shaocai.,Chen, Xue.,Li, Zhen.,Zhang, Yibo.,...&Seinfeld, John H..(2022).Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(17),22.
MLA	Li, Mengying,et al."Impacts of condensable particulate matter on atmospheric organic aerosols and fine particulate matter (PM2.5) in China".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.17(2022):22.