Temporal variability of surface air pollutants in megacities of South Korea
This study investigated the various temporal (weekly, monthly, and inter-annual) variability of air pollutants (PM10, SO2, NO2, O3, CO) in seven megacities in South Korea (Seoul, Busan, Incheon, Daegu, Gwangju, Daejeon, and Ulsan). We found that the general decreasing trend of PM10, SO2, NO2, and CO...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.915531/full |
| _version_ | 1817969860329603072 |
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| author | Taegyung Lee Sujung Go Yun Gon Lee Sang Seo Park Jinsoo Park Ja-Ho Koo |
| author_facet | Taegyung Lee Sujung Go Yun Gon Lee Sang Seo Park Jinsoo Park Ja-Ho Koo |
| author_sort | Taegyung Lee |
| collection | DOAJ |
| description | This study investigated the various temporal (weekly, monthly, and inter-annual) variability of air pollutants (PM10, SO2, NO2, O3, CO) in seven megacities in South Korea (Seoul, Busan, Incheon, Daegu, Gwangju, Daejeon, and Ulsan). We found that the general decreasing trend of PM10, SO2, NO2, and CO. An exceptional pollutant is O3, showing a clear increasing trend consistently in all seven megacities. Seasonally PM10, SO2, NO2, and CO have the highest level in winter due to the large fossil-fuel combustion for the heating demand, but O3 shows the maximum peak in summer related to the intensified photochemistry. Based on the analysis for percentile values of air pollutants, we recognized that some patterns of air pollutants in Korean megacities are overlooked: O3 increase is not perfectly related to the NO2 pattern, somewhat high SO2 in the coastal cities, ambiguous weekly pattern on Monday (as a weekday) and Sunday (as a weekend). Through this comprehensive analysis of multiple air pollutants using the percentile values, the characteristic for various temporal change of air pollutants in Korean megacities can be better understood, and some useful ideas for the air quality control in the urban region can be also excavated. |
| first_indexed | 2024-04-13T20:26:33Z |
| format | Article |
| id | doaj.art-703dfd98820147259d221370b0c07c86 |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-04-13T20:26:33Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-703dfd98820147259d221370b0c07c862022-12-22T02:31:19ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-07-011010.3389/fenvs.2022.915531915531Temporal variability of surface air pollutants in megacities of South KoreaTaegyung Lee0Sujung Go1Yun Gon Lee2Sang Seo Park3Jinsoo Park4Ja-Ho Koo5Department of Atmospheric Sciences, Yonsei University, Seoul, South KoreaJoint Center for Earth Systems Technology, University of Maryland Baltimore Country, Baltimore, MD, United StatesDepartment of Atmospheric Sciences, Chungnam National University, Daejeon, South KoreaSchool of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South KoreaAir Quality Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research, Incheon, South KoreaDepartment of Atmospheric Sciences, Yonsei University, Seoul, South KoreaThis study investigated the various temporal (weekly, monthly, and inter-annual) variability of air pollutants (PM10, SO2, NO2, O3, CO) in seven megacities in South Korea (Seoul, Busan, Incheon, Daegu, Gwangju, Daejeon, and Ulsan). We found that the general decreasing trend of PM10, SO2, NO2, and CO. An exceptional pollutant is O3, showing a clear increasing trend consistently in all seven megacities. Seasonally PM10, SO2, NO2, and CO have the highest level in winter due to the large fossil-fuel combustion for the heating demand, but O3 shows the maximum peak in summer related to the intensified photochemistry. Based on the analysis for percentile values of air pollutants, we recognized that some patterns of air pollutants in Korean megacities are overlooked: O3 increase is not perfectly related to the NO2 pattern, somewhat high SO2 in the coastal cities, ambiguous weekly pattern on Monday (as a weekday) and Sunday (as a weekend). Through this comprehensive analysis of multiple air pollutants using the percentile values, the characteristic for various temporal change of air pollutants in Korean megacities can be better understood, and some useful ideas for the air quality control in the urban region can be also excavated.https://www.frontiersin.org/articles/10.3389/fenvs.2022.915531/fullSouth KoreamegacityPM10NO2ozoneSO2 |
| spellingShingle | Taegyung Lee Sujung Go Yun Gon Lee Sang Seo Park Jinsoo Park Ja-Ho Koo Temporal variability of surface air pollutants in megacities of South Korea Frontiers in Environmental Science South Korea megacity PM10 NO2 ozone SO2 |
| title | Temporal variability of surface air pollutants in megacities of South Korea |
| title_full | Temporal variability of surface air pollutants in megacities of South Korea |
| title_fullStr | Temporal variability of surface air pollutants in megacities of South Korea |
| title_full_unstemmed | Temporal variability of surface air pollutants in megacities of South Korea |
| title_short | Temporal variability of surface air pollutants in megacities of South Korea |
| title_sort | temporal variability of surface air pollutants in megacities of south korea |
| topic | South Korea megacity PM10 NO2 ozone SO2 |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.915531/full |
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