Insights into particulate matter pollution in the North China Plain during wintertime: Local contribution or regional transport?

doi:10.5194/acp-2020-597

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-597
	Insights into particulate matter pollution in the North China Plain during wintertime: Local contribution or regional transport?
	Jiarui Wu, Naifang Bei, Yuan Wang, Xia Li, Suixin Liu, Lang Liu, Ruonan Wang, Jiaoyang Yu, Min Zuo, Zhenxing Shen, Junji Cao, Xuexi Tie, and Guohui Li
	2020-07-14
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Accurate identification and quantitative source apportionment of fine particulate matters (PM_2.5) provide an important prerequisite for design and implementation of emission control strategies to reduce PM pollution. Therefore, a source-oriented version of the WRF-Chem model is developed in the study to make source apportionment of PM_2.5 in the North China Plain (NCP). A persistent and heavy haze event occurred in the NCP from 05 December 2015 to 04 January 2016 is simulated using the model as a case study to quantify PM_2.5 contributions of local emissions and regional transport. Results show that local and non-local emissions contribute 36.3 % and 63.7 % of the PM_2.5 mass in Beijing during the haze event on average. When Beijing's air quality is excellent or good in terms of hourly PM_2.5 concentrations, local emissions dominate the PM_2.5 mass with contributions exceeding 50 %. However, when the air quality is severely polluted, the PM_2.5 contribution of non-local emissions is around 75 %. The non-local emissions also dominate the Tianjin's air quality, with average PM_2.5 contributions exceeding 70 %. The PM_2.5 level in Hebei and Shandong is generally controlled by local emissions, but in Henan, local and non-local emissions play an almost equivalent role in the PM_2.5 level, except when the air quality is severely polluted, with non-local PM_2.5 contributions of over 60 %. Additionally, the primary aerosol species are generally dominated by local emissions with the average contribution exceeding 50%. However, the source apportionment of secondary aerosols shows more evident regional characteristics. Therefore, except cooperation with neighboring provinces to carry out strict emission mitigation measures, reducing primary aerosols constitutes the priority to alleviate PM pollution in the NCP, especially in Beijing and Tianjin.
领域	地球科学
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/284208
专题	地球科学
推荐引用方式 GB/T 7714	Jiarui Wu, Naifang Bei, Yuan Wang, Xia Li, Suixin Liu, Lang Liu, Ruonan Wang, Jiaoyang Yu, Min Zuo, Zhenxing Shen, Junji Cao, Xuexi Tie, and Guohui Li. Insights into particulate matter pollution in the North China Plain during wintertime: Local contribution or regional transport?[J]. Atmospheric Chemistry and Physics,2020.
APA	Jiarui Wu, Naifang Bei, Yuan Wang, Xia Li, Suixin Liu, Lang Liu, Ruonan Wang, Jiaoyang Yu, Min Zuo, Zhenxing Shen, Junji Cao, Xuexi Tie, and Guohui Li.(2020).Insights into particulate matter pollution in the North China Plain during wintertime: Local contribution or regional transport?.Atmospheric Chemistry and Physics.
MLA	Jiarui Wu, Naifang Bei, Yuan Wang, Xia Li, Suixin Liu, Lang Liu, Ruonan Wang, Jiaoyang Yu, Min Zuo, Zhenxing Shen, Junji Cao, Xuexi Tie, and Guohui Li."Insights into particulate matter pollution in the North China Plain during wintertime: Local contribution or regional transport?".Atmospheric Chemistry and Physics (2020).