Analysis of Ozone Pollution Characteristics and Influencing Factors in Northeast Economic Cooperation Region, China

Jiaqi Tian,Chunsheng Fang,Jiaxin Qiu,Ju Wang

doi:10.3390/atmos12070843

Abstract

The increase in tropospheric ozone (O3) concentration has become one of the factors restricting urban development. This paper selected the important economic cooperation areas in Northeast China as the research object and collected the hourly monitoring data of pollutants and meteorological data in 11 cities from 1 January 2015 to 31 December 2019. The temporal and spatial variation trend of O3 concentration and the effects of meteorological factors and other pollutants, including CO (carbon monoxide), SO2 (sulfur dioxide), NO2 (nitrogen dioxide), and PM2.5 and PM10 (PM particles with aerodynamic diameters less than 2.5 μm and 10 μm) on ozone concentration were analyzed. At the same time, the variation period of O3 concentration was further analyzed by Morlet wavelet analysis. The results showed that the O3 pollution in the study area had a significant spatial correlation. The spatial distribution showed that the O3 concentration was relatively high in the south and low in the northeast. Seasonally, the O3 concentration was the highest in spring, followed by summer, and the lowest in winter. The diurnal variation of O3 concentration presented a “single peak” pattern. O3 concentration had a significant positive correlation with temperature, sunshine duration, and wind speed and a significant anticorrelation with CO, NO2, SO2, and PM2.5 concentration. Under the time scale of a = 9, 23, O3 had significant periodic fluctuation, which was similar to those of wind speed and temperature.

Highlights

Shang et al [6,7,8] conducted an analysis of the research related to ozone concentration and death risk and found that the exposure–response relationship coefficient of short-term exposure to O3 on the risk of death is relatively high, and the increase of O3 concentration will lead to an increase in cardiovascular mortality and respiratory mortality
The similarity of regional O concentration is related to the spatial correlation charThe similarity of regional O33 concentration is related to the spatial correlation characteristics acteristics of of atmospheric atmospheric activity activity [34]
Relative humidity and emissions from industrial and traffic sources, the spatial distribution of O3 concentration in the study area was generally higher in the south and lower in the northeast

Summary

Introduction

Tropospheric ozone has a significant negative impact on human health and plant growth [2,3,4,5]. Shang et al [6,7,8] conducted an analysis of the research related to ozone concentration and death risk and found that the exposure–response relationship coefficient of short-term exposure to O3 on the risk of death is relatively high, and the increase of O3 concentration will lead to an increase in cardiovascular mortality and respiratory mortality. High O3 concentration destroys the internal structure and physiological functions of vegetation, resulting in decreased production of food crops (wheat, rice, soybeans, etc.), thereby affecting food shortage [9,10]. Ozone has become one of the important atmospheric pollutants in most Chinese cities [11]

Methods

Results

Conclusion