Open AccessCharacteristics and Source Apportionment of the Vertical Distribution of Ozone at a Site of the Pearl River Delta Region of China
Author(s) -
Wang Xinqi,
Xiang Yan,
Liu Wentao,
Yun Long,
Lv Lihui,
Zhang Mingdi,
Xu Junzheng,
Fan Guangqiang,
Ou Jinping,
Wang Qiubu,
Duan Danyang,
Zhang Tianshu
Publication year - 2021
Publication title -
earth and space science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.843
H-Index - 23
ISSN - 2333-5084
DOI - 10.1029/2020ea001578
Subject(s) - ozone , environmental science , pollution , atmospheric sciences , china , air pollution , climatology , meteorology , geography , chemistry , geology , ecology , archaeology , organic chemistry , biology
Abstract Ozone pollution adversely affects human health. In recent years, ozone pollution has become an important research topic and a challenge. By combining differential absorption lidar (DIAL), meteorological gradient tower data, the Weather Research and Forecasting (WRF) model, and the backward trajectories model, changes in vertical ozone concentration, the influencing factors on ozone vertical distribution, and ozone sources were analyzed in Shenzhen from September 20 to 30, 2019. Results indicated that from September 25 to 30, there was obvious residual ozone and transport at night. The analysis of ozone concentration and meteorological factors shows that the temperatures of 291.3–301.8 K and the humidity of 19.4%–71.6% were conducive to ozone formation. As height increased from less than 0.1–0.3 km, the average ozone concentration increased, and the average NO 2 concentration decreased. The analysis of potential ozone sources showed that ozone was mainly transported from the northeast of China and that the highest concentration of ozone mainly comes from southeast of Jiangxi province in southeastern China.