Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas
Abstract As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types of research flights were conducted over the Seoul Metropolitan Area (SMA) from May till June 2015 to measure the spatial distribution of a pollution plume near a power plant and petrochemical complex, the verti...
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| Format: | Article |
| Language: | English |
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Springer
2020-05-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.2019.12.0649 |
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| author | Taehyun Park Yongjoo Choi Jinsoo Choi Junyoung Ahn Jinsoo Park Yonghwan Lee Jihee Ban Gyutae Park Seokwon Kang Kyunghoon Kim Beom-Keun Seo Jongho Kim Soobog Park Hyunjae Kim HaEun Jeon Taehyoung Lee |
| author_facet | Taehyun Park Yongjoo Choi Jinsoo Choi Junyoung Ahn Jinsoo Park Yonghwan Lee Jihee Ban Gyutae Park Seokwon Kang Kyunghoon Kim Beom-Keun Seo Jongho Kim Soobog Park Hyunjae Kim HaEun Jeon Taehyoung Lee |
| author_sort | Taehyun Park |
| collection | DOAJ |
| description | Abstract As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types of research flights were conducted over the Seoul Metropolitan Area (SMA) from May till June 2015 to measure the spatial distribution of a pollution plume near a power plant and petrochemical complex, the vertical profiles of pollutants on the western coast of Korea, and the pollutant distribution in the SMA. The pollution plume (~0−700 m) was highly concentrated and dominated by organic aerosol (OA), which very likely oxidized in the plume, as it showed slightly less oxidation near the source and significantly less oxidation at altitudes above the plume. One vertical profile displayed transitions in concentration and changes in the dominant components, suggesting that the particle sources and/or processing differed above ~1000 m; below 1000 m, where the total mass and OA concentrations were high, sulfate and likely transport sources predominated. The other profile, which was assessed during a separate flight, exhibited sharp increases in the OA number concentration and mean diameter, less oxidized organic content, and higher organic and nitrate concentrations above 1400 m, indicating high-altitude transport and a cleaner boundary layer. Finally, flights investigating the distributions of pollutants in the central, upwind, and downwind SMA regions generally detected high levels of oxidation downwind as well as different aerosol masses between the low and high altitudes. This study highlights the necessity of understanding the complex vertical structures of particle layers, such as those identified in and around the SMA, in order to facilitate the adoption of efficient air quality control strategies and enhance air quality forecasting. |
| format | Article |
| id | doaj-art-2b31d9b83973489abe5c9e4e61b153a2 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-05-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-2b31d9b83973489abe5c9e4e61b153a22025-02-09T12:19:04ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-05-0120112485249410.4209/aaqr.2019.12.0649Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban AreasTaehyun Park0Yongjoo Choi1Jinsoo Choi2Junyoung Ahn3Jinsoo Park4Yonghwan Lee5Jihee Ban6Gyutae Park7Seokwon Kang8Kyunghoon Kim9Beom-Keun Seo10Jongho Kim11Soobog Park12Hyunjae Kim13HaEun Jeon14Taehyoung Lee15Department of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Science, Hankuk University of Foreign StudiesClimate and Air Quality Research Department, National Institute of Environmental ResearchAir Quality Forecasting Center, National Institute of Environmental ResearchClimate and Air Quality Research Department, National Institute of Environmental ResearchDepartment of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Science, Hankuk University of Foreign StudiesDepartment of Environmental Engineering, Hanseo UniversityDepartment of Environmental Engineering, Hanseo UniversityDepartment of Flight Operations, Hanseo UniversityClimate and Air Quality Research Department, National Institute of Environmental ResearchClimate and Air Quality Research Department, National Institute of Environmental ResearchDepartment of Environmental Science, Hankuk University of Foreign StudiesAbstract As part of the Megacity Air Pollution Studies (MAPS)-Seoul campaign, three types of research flights were conducted over the Seoul Metropolitan Area (SMA) from May till June 2015 to measure the spatial distribution of a pollution plume near a power plant and petrochemical complex, the vertical profiles of pollutants on the western coast of Korea, and the pollutant distribution in the SMA. The pollution plume (~0−700 m) was highly concentrated and dominated by organic aerosol (OA), which very likely oxidized in the plume, as it showed slightly less oxidation near the source and significantly less oxidation at altitudes above the plume. One vertical profile displayed transitions in concentration and changes in the dominant components, suggesting that the particle sources and/or processing differed above ~1000 m; below 1000 m, where the total mass and OA concentrations were high, sulfate and likely transport sources predominated. The other profile, which was assessed during a separate flight, exhibited sharp increases in the OA number concentration and mean diameter, less oxidized organic content, and higher organic and nitrate concentrations above 1400 m, indicating high-altitude transport and a cleaner boundary layer. Finally, flights investigating the distributions of pollutants in the central, upwind, and downwind SMA regions generally detected high levels of oxidation downwind as well as different aerosol masses between the low and high altitudes. This study highlights the necessity of understanding the complex vertical structures of particle layers, such as those identified in and around the SMA, in order to facilitate the adoption of efficient air quality control strategies and enhance air quality forecasting.https://doi.org/10.4209/aaqr.2019.12.0649Air pollution plumeAircraft observationsAerosol agingPhotochemical processingSpatial distribution |
| spellingShingle | Taehyun Park Yongjoo Choi Jinsoo Choi Junyoung Ahn Jinsoo Park Yonghwan Lee Jihee Ban Gyutae Park Seokwon Kang Kyunghoon Kim Beom-Keun Seo Jongho Kim Soobog Park Hyunjae Kim HaEun Jeon Taehyoung Lee Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas Aerosol and Air Quality Research Air pollution plume Aircraft observations Aerosol aging Photochemical processing Spatial distribution |
| title | Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas |
| title_full | Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas |
| title_fullStr | Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas |
| title_full_unstemmed | Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas |
| title_short | Aircraft Measurements of Physicochemical Evolution of Atmospheric Aerosols in Air Pollution Plumes over a Megacity and Suburban Areas |
| title_sort | aircraft measurements of physicochemical evolution of atmospheric aerosols in air pollution plumes over a megacity and suburban areas |
| topic | Air pollution plume Aircraft observations Aerosol aging Photochemical processing Spatial distribution |
| url | https://doi.org/10.4209/aaqr.2019.12.0649 |
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