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Open AccessArticle

Characteristics of Ground-Level Ozone from 2015 to 2018 in BTH Area, China

1
Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang 330013, China
2
College of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
3
School of Environment, Beijing Normal University, Beijing 100875, China
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(2), 130; https://doi.org/10.3390/atmos11020130
Received: 7 December 2019 / Revised: 20 January 2020 / Accepted: 22 January 2020 / Published: 24 January 2020
(This article belongs to the Section Air Quality)
With the ground-level ozone pollution problem increasingly prominent in recent years in China, it is particularly important in basic researches on ozone contamination characteristics. In this study, 13 cities in Beijing-Tianjin-Hebei (BTH) area were examined to determine the characteristics of surface ozone (O3) from 2015 to 2018. Due to the photochemical oxidation of ozone precursors (such as nitrogen oxides and carbon monoxide) along with the presence of sunlight and characteristics of local emission sources, the O3 and oxidant (OX) concentrations showed obvious seasonal variation and daily variation. It implicated that the O3 concentrations reached the maximum during summer. The concentrations of O3 were higher at daytime than those measured at nighttime. The ozone weekend effect was estimated by the difference and deviation, which exhibited that the difference between weekday and weekend were related to the concentrations of ozone precursors and PM, vehicle emissions, and solar radiation. Moreover, the O3 concentrations decreased with the increase of other air pollutants by correlation analysis. The ozone pollution was easily formed at light and moderate polluted periods when compared to other air quality levels.
Keywords: ozone; ozone precursors; ozone weekend effect; correlation analysis; air quality levels ozone; ozone precursors; ozone weekend effect; correlation analysis; air quality levels
MDPI and ACS Style

Fang, X.; Xiao, H.; Sun, H.; Liu, C.; Zhang, Z.; Xie, Y.; Liang, Y.; Wang, F. Characteristics of Ground-Level Ozone from 2015 to 2018 in BTH Area, China. Atmosphere 2020, 11, 130.

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