Regional source contributions to fine particulate matter of less studied cities in Beijing-Tianjin-Hebei region in 2017--颗粒学报PARTICUOLOGY

Liu, Q., Zhang, M., Wang, P., Chen, K., Wang, P., Zhang, Y., . . . Zhang, H. (2023). Regional source contributions to fine particulate matter of less studied cities in Beijing-Tianjin-Hebei region in 2017. Particuology, 82, 111-121. https://doi.org/10.1016/j.partic.2023.01.011

Regional source contributions to fine particulate matter of less studied cities in Beijing-Tianjin-Hebei region in 2017

Qixian Liu ^a, Mengyuan Zhang ^a, Pengfei Wang ^b, Kaiyu Chen ^c, Peng Wang ^d^e, Yi Zhang ^f, Baojun Zhang ^f, Hongliang Zhang ^{a e g *}

a Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China
b Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
c Department of Chemical Engineering, University of Utah, Salt Lake City, 84112, USA
d Department of Atmospheric and Marine Sciences, Fudan University, Shanghai, 200438, China
e IRDR ICoE on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public Health, Fudan University, Shanghai, 200438, China
f Tangshan Ecological Environment Publicity and Education Center, Tangshan, Hebei, 063000, China
g Institute of Eco-Chongming, Shanghai, 200062, China

10.1016/j.partic.2023.01.011

Volume 82, November 2023, Pages 111-121

Received 14 December 2022, Revised 19 January 2023, Accepted 20 January 2023, Available online 6 February 2023, Version of Record 14 February 2023.

E-mail: zhanghl@fudan.edu.cn

Highlights

• Local sources are the most important (23%–61%) for PM_2.5 in Hebei cities.

• Shandong (4%–22%) is the top inter-province contributor to PM_2.5 in Hebei cities.

• Reducing local primary particulate matter emission can effectively control heavy pollution events.

Abstract

Located in the central area of the North China Plain, the Beijing-Tianjin-Hebei region experiences severe air pollution, especially for Hebei province with five cities among the top 10 cities with the worst air quality nationwide. However, less studies have investigated local and regional contributions to cities in Hebei in comparison to Beijing and Tianjin. In this study, a source-oriented version of the Community Multiscale Air Quality (CMAQ) model is used to quantify inter- and intra-province transport of PM_2.5 in 11 cities within Hebei in 2017. PM_2.5 and its components vary seasonally with high levels in winter and low levels in summer. Local contributions to total PM_2.5 within cities are 23%–61%, while intra-province transport contributes 10%–30%, and inter-province transport contributes 23%–46%, with top contributors of Shandong (4%–22%), Henan (3%–15%) and Shanxi (2%–11%). The primary components in most cities are mainly from local sources (30%–80%), and the secondary components are mainly from inter-province contributions (30%–66%). Local sources have the highest contributions to total PM_2.5 in Shijiazhuang (∼49%), followed by Shanxi (∼12%) and Xingtai (∼7%). Secondary components from local and intra-province emissions are the major cause of heavy pollution events. These results suggest that both local and regional joint control measures with neighboring cities and provinces are necessary for pollution reduction in Hebei cities.

Graphical abstract

Keywords

PM_2.5; Source-orientedHebei; Regional contributions; Community Multiscale Air Quality (CMAQ) model

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