Demonstration of long-term increases in tropospheric O3 levels: Causes and potential impacts

•The long-term trend of ozone is investigated from the major urban areas.•Factors controlling ozone are evaluated with respect to environmental variables.•The conditions of most cities were classified as NOx-saturated regimes for ozone. Ground-level ozone (O3) is a well-known atmospheric pollutant w...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2013-09, Vol.92 (11), p.1520-1528
Main Authors: Susaya, Janice, Kim, Ki-Hyun, Shon, Zang-Ho, Brown, Richard J.C.
Format: Article
Language:English
Subjects:
Air - analysis
Chemical composition and interactions. Ionic interactions and processes
Cities
Earth, ocean, space
environmental impact
Exact sciences and technology
External geophysics
human health
Korea
Long-term trend
Meteorology
nitrogen oxides
NOx
ozone
Ozone - analysis
population density
Seasons
solar radiation
sulfur dioxide
temperature
Time Factors
troposphere
Tropospheric ozone
VOC
volatile organic compounds
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Summary:•The long-term trend of ozone is investigated from the major urban areas.•Factors controlling ozone are evaluated with respect to environmental variables.•The conditions of most cities were classified as NOx-saturated regimes for ozone. Ground-level ozone (O3) is a well-known atmospheric pollutant with its adverse impacts on the environment and human health. Here, the tropospheric O3 concentrations monitored in seven major cities in Korea at monthly intervals over a 22-year period (1989–2010) are presented, and their long-term variability examined. The analysis of annual mean values of O3 (in nmolmol−1, or ppb) showed a noticeable increase of 118±69% in all seven cities over the two decades (p
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2013.04.017