Contribution of local and surrounding area anthropogenic emissions to a high ozone episode in Zhengzhou, China

Ruiqi Min; Feng Wang; Yaobin Wang; Genxin Song; Hui Zheng; Haopeng Zhang; Xutong Ru; Hongquan Song

doi:10.1016/j.envres.2022.113440

Contribution of local and surrounding area anthropogenic emissions to a high ozone episode in Zhengzhou, China

Environ Res. 2022 Sep;212(Pt C):113440. doi: 10.1016/j.envres.2022.113440. Epub 2022 May 6.

Authors

Ruiqi Min¹, Feng Wang¹, Yaobin Wang², Genxin Song³, Hui Zheng⁴, Haopeng Zhang¹, Xutong Ru¹, Hongquan Song⁵

Affiliations

¹ Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, Henan, 475004, China; Institute of Urban Big Data, College of Geography and Environmental Science, Henan University, Kaifeng, Henan, 475004, China.
² Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security, Henan University, Kaifeng, Henan, 475004, China; Institute of Urban Big Data, College of Geography and Environmental Science, Henan University, Kaifeng, Henan, 475004, China.
³ Institute of Urban Big Data, College of Geography and Environmental Science, Henan University, Kaifeng, Henan, 475004, China. Electronic address: gxsong@henu.edu.cn.
⁴ Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, Henan, 475004, China; Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security, Henan University, Kaifeng, Henan, 475004, China.
⁵ Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, Henan, 475004, China; Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security, Henan University, Kaifeng, Henan, 475004, China. Electronic address: hqsong@henu.edu.cn.

PMID: 35526583
DOI: 10.1016/j.envres.2022.113440

Abstract

This study analyzed an ozone pollution episode that occurred in the summer of 2020 in Zhengzhou, the provincial capital of Henan, China, and quantified the contribution of local and surrounding area anthropogenic emissions to this episode based on the Weather Research and Forecasting with Chemistry (WRF/Chem) model. Simulation results showed that the WRF/Chem model is well suited to simulate the ozone concentrations in this area. In addition, four simulation scenarios (removing the emissions from the northern Zhengzhou, southwestern Zhengzhou, Zhengzhou local and southeastern Zhengzhou) were conducted to explore the specific contributions of local emissions and emissions from surrounding areas within Henan to this ozone pollution episode. We found that contributions from the northern, local, southwestern, and southeastern regions were 6.1%, 5.9%, 1.7%, and 1.5%, respectively. The northern and local emissions of Zhengzhou (only emissions from Zhengzhou) were prominent contributors within the simulation areas. In other words, during this episode, most of the ozone pollution in Zhengzhou appeared to be transported in from regions outside Henan Province.

Keywords: Henan; O(3) concentration; Ozone pollution; Regional transport; WRF/Chem model.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Air Pollutants* / analysis
Air Pollution* / analysis
Air Pollution* / statistics & numerical data
China
Environmental Monitoring / methods
Ozone* / analysis
Weather

Substances

Air Pollutants
Ozone