广东省区域臭氧污染过程三维输送特征分析与定量来源解析

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Abstract The WRF-CMAQ model was used to simulate aregional O₃ pollution process in Guangdong Province from March 25 to 27, 2021, and the simulation results were good. While O₃ pollution in the Pearl River Delta (PRD) subsided, O₃ pollution abnormally appeared in Shaoguan City. Taking Shaoguan as the main focus, the process of O₃ transport from the PRD to Shaoguan was analyzed. The Process Analysis (PA) and Integrated Source Apportionment Method (ISAM) in the CMAQ model were used to assess the pollution transport and development process quantitatively. The results show that O₃ polluted air mass generated in the PRD region remained in the upper air on March 25 and was transported to Shaoguan from the night of March 25 to the morning of March 26. 66.1% of O₃ in the upper level from outside Shaoguan was transmitted down to the ground, and the physical transport process played a dominant role. On the 26th, O₃ from Guangzhou, Dongguan, Qingyuan, and Foshan increased by 12times compared with the 25th. Regional transport was the main contributor to the abnormal O₃ pollution in Shaoguan. Guangzhou and Dongguan were the primary sources of regional transport. Shaoguan, a city located in the basin, is easily affected by external transport, thus regionally coordinated emission reduction and joint prevention of O₃ should be of concern.

Key words： Shaoguan numerical model(WRF/CMAQ) process analysis source apportionment

Received: 17 October 2022

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X515

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	XU Yi-fei
	CUI Yin-ping
	ZHU Yi-xiao
	SHEN Ao
	JIN Yin-bao
	WANG Hai-heng
	LIU Yi-ming
	LU Xiao
	FAN Qi

Cite this article:

XU Yi-fei,CUI Yin-ping,ZHU Yi-xiao等. Assessment of three-dimensional transport processes and quantitative source analysis of regional ozone pollution in Guangdong Province[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(5): 2119-2127.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I5/2119

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