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Huan Jing Ke Xue

Title:		[Analysis of O(3) Sources in Yulin City in Summer Based on WRF-CMAQ/ISAM Model]
Author(s):		Wang YF; Tong JL; Chen YX; Lin X; Liu YL; Ao CJ; Liu HT;
Address:		"College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China"
Journal Title:		Huan Jing Ke Xue
Year:		2023
Volume:		44
Issue:		7
Page Number:		3676 - 3684
DOI:		10.13227/j.hjkx.202207003
ISSN/ISBN:		0250-3301 (Print) 0250-3301 (Linking)
Abstract:		"In order to have a clearer understanding of the sources of ozone pollution in Yulin City in summer and put forward scientific governance suggestions, the WRF-CMAQ model was used to simulate the O(3) concentration in Yulin City and surrounding areas (including Taiyuan City, Xi'an City, Yinchuan City, Hohhot City, and other provincial capital cities) in July 2019. Using the ISAM module, the sources of O(3) and its precursors NO(x) and VOCs in a heavy pollution process in Yulin City were quantified. The results showed that on heavy pollution days, the O(3) in Yulin City mainly came from the long-distance transmission outside the simulation area (55.5%), followed by the photochemical reaction of precursors in the simulation area (20.6%, 10.0%, 5.0%, 2.3%, and 2.1%, respectively, in Yulin City, Shanxi Province, Inner Mongolia Autonomous Region, and Shaanxi Province, 1.2% in Gansu Province, Ningxia Hui Autonomous Region, and Henan Province in total), and initial conditions (0.3%); the remaining sources (23.6%) could not be successfully labeled. Yulin City is in the VOCs control area, and its VOCs were composed of paraffin (76.5%), ketones (9.2%), and other types of VOCs (14.3%). The VOCs came from the emission of pollution sources in the simulation area (45.6%, 22.0%, 11.4%, 6.3%, and 5.1%, respectively, in Yulin City, Shanxi Province, Inner Mongolia Autonomous Region, and Shaanxi Province, 0.8% in Gansu Province, Ningxia Hui Autonomous Region, and Henan Province in total) and the long-distance transmission outside the simulation area (27.9%); the remaining 26.5% were not successfully marked. This research showed that to control the O3 pollution in Yulin, not only should the local VOCs emissions be controlled, but the overall planning of VOCs emissions in the peripheral areas should also be done well"
Keywords:		CMAQ-ISAM model Yulin City ozone (O3) source analysis volatile organic compounds (VOCs);
Notes:		"PubMed-not-MEDLINEWang, Yi-Fan Tong, Ji-Long Chen, Yu-Xiang Lin, Xin Liu, Yong-le Ao, Cong-Jie Liu, Hao-Tian chi English Abstract China 2023/07/13 Huan Jing Ke Xue. 2023 Jul 8; 44(7):3676-3684. doi: 10.13227/j.hjkx.202207003"