Characteristics and Source Analysis of Ozone Pollution in Tianjin from 2013 to 2022

被引:0
作者
Dong, Shuo [1 ]
Ma, Pengfei [2 ]
Yang, Xingchuan [1 ]
Luo, Nana [3 ]
Chen, Linhan [2 ]
Wang, Lili [1 ]
Song, Hanyang [1 ]
Zhao, Shaohua [2 ]
Zhao, Wenji [1 ]
机构
[1] Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China
[2] Minist Ecol & Environm, Ctr Satellite Applicat Ecol & Environm, State Environm Protect Key Lab Satellite Remote Se, Beijing 100094, Peoples R China
[3] Beijing Univ Civil Engn & Architecture, Sch Geomat & Urban Informat, Beijing 100044, Peoples R China
基金
北京市自然科学基金;
关键词
ozone pollution; ozone source; Tianjin; high-value area identification; PEARL RIVER DELTA; LONG-TERM TREND; SURFACE OZONE; AMBIENT FORMALDEHYDE; EMISSION CHANGES; CHINA; NOX; ATMOSPHERE; CHEMISTRY; PRECURSOR;
D O I
10.3390/rs16213970
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study has analyzed ozone pollution in Tianjin from 2013 to 2022, focusing on the relationships between ozone distribution, meteorological conditions, and precursor substances. A method for identifying high-value areas of ozone precursors using the Ozone Sensitivity Factor (FNR) has been introduced. Results show that the average ozone concentration in Tianjin has been 100.608 mu g/m3, with an annual growth rate of 2.84 mu g<middle dot>m(-)3<middle dot>yr(-)(1). Tianjin has ranked among the top provinces and urban agglomerations in China for both ozone concentration and growth rate. Ozone levels have peaked in summer, followed by spring, autumn, and winter, while the growth rate has been highest in spring. This indicates that ozone pollution extends from summer into spring and autumn. An analysis of six ozone pollution events reveals significant regional transmission impacts from northern Hebei and Inner Mongolia, contributing over 30%, with additional significant contributions from southern and southwestern Hebei and western Shandong. In terms of controlling ozone precursors, high-HCHO-value areas have been identified. The correlation between areas of high HCHO values and ground-level ozone concentrations was 0.56339 during the ozone season and 0.2214 during the non-ozone season, both of which improved identification accuracy to varying degrees, suggesting that targeting precursor emissions in these areas could enhance pollution mitigation efforts.
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页数:17
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