Analysis of China's PM2.5 and ozone coordinated control strategy based on the observation data from 2015 to 2020

Liuwei Kong; Mengdi Song; Xin Li; Ying Liu; Sihua Lu; Limin Zeng; Yuanhang Zhang

doi:10.1016/j.jes.2023.03.030

Analysis of China's PM_2.5 and ozone coordinated control strategy based on the observation data from 2015 to 2020

J Environ Sci (China). 2024 Apr:138:385-394. doi: 10.1016/j.jes.2023.03.030. Epub 2023 Apr 3.

Authors

Liuwei Kong¹, Mengdi Song¹, Xin Li², Ying Liu¹, Sihua Lu¹, Limin Zeng¹, Yuanhang Zhang¹

Affiliations

¹ State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
² State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. Electronic address: li_xin@pku.edu.cn.

PMID: 38135404
DOI: 10.1016/j.jes.2023.03.030

Abstract

The coordinated control of PM_2.5 and ozone has become the strategic goal of national air pollution control. Considering the gradual decline in PM_2.5 concentration and the aggravation of ozone pollution, a better understanding of the coordinated control of PM_2.5 and ozone is urgently needed. Here, we collected and sorted air pollutant data for 337 cities from 2015 to 2020 to explore the characteristics of PM_2.5 and ozone pollution based on China's five major air pollution regions. The results show that it is necessary to continue to strengthen the emission reduction in PM_2.5 and ozone precursors, and control NO_x and VOCs while promoting a dramatic emission reduction in PM_2.5. The primary method of curbing ozone pollution is to strengthen the emission control of VOCs, with a long-term strategy of achieving substantial emission reductions in NO_x, because VOCs and NO_x are also precursors to PM_2.5; hence, their reductions also contribute to the reduction in PM_2.5. Therefore, the implementation of a multipollutant emission reduction control strategy aimed at the prevention and control of PM_2.5 and ozone pollution is the only means to realize the coordinated control of PM_2.5 and ozone.

Keywords: Coordinated control; Multipollutant reduction; Ozone; PM(2.5).

MeSH terms

Air Pollutants* / analysis
Air Pollution* / analysis
Air Pollution* / prevention & control
China
Environmental Monitoring / methods
Ozone* / analysis
Particulate Matter / analysis

Substances

Ozone
Particulate Matter
Air Pollutants