Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Identification of Potential Source Locations of PM2.5 in Seoul using Hybrid-receptor Models

하이브리드 수용모델을 이용한 서울시 PM2.5 오염원의 위치 추적

  • Kang, Byung-Wook (Division of Environmental Engineering, Chungju National University) ;
  • Kang, Choong-Min (Department of Environmental Health, School of Public Health, Harvard University) ;
  • Lee, Hak-Sung (Department of Environmental, Civil, and Information System, Seowon University) ;
  • SunWoo, Young (Department of Advanced Technology Fusion, Konkuk University)
  • 강병욱 (국립충주대학교 환경공학부) ;
  • 강충민 (Harvard 보건대학원) ;
  • 이학성 (서원대학교 환경건설정보학과) ;
  • 선우영 (건국대학교 신기술융합학과)
  • Published : 2008.12.31
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Abstract

Two hybrid receptor models, potential source contribution function (PSCF) and concentration weighted tracjectory (CWT), were compared for locating $PM_{2.5}$ sources contributing to the atmospheric $PM_{2.5}$ concentrations in Seoul. The source contribution estimates by chemical receptor model (CMB) receptor model were used to identify better source areas, Among the sources, soil, agricultural burning, marine aerosol, coal-fired power plant and Chinese aerosol were only considered for the study because these sources were more likely to be associated with the long-range transport of air pollutant. Both methods are based on combining chemical data with calculated air parcel backward trajectories. However, the PSCF analyses were performed with trajectories above the $75^{th}$ percentile criterion values, while the CWT analyses used all trajectories. This difference resulted in locating of different sources, which might be helpful to interpret locating of $PM_{2.5}$ sources, High possible source areas in source contribution of soil and agricultural burning contributing to the Seoul $PM_{2.5}$ were inland areas of Heibei and Shandong provinces (highest density areas of agricultural production and population) in China. The "Chinese aerosol" was used as a representative source for the $PM_{2.5}$ originated from urban area in China. High possible source areas for the aerosol were the cities in China where are relatively close to the receptor. This result suggests that Chinese aerosol is likely to be a useful tool in studies on source apportionment and identification in Korea.

Keywords

References

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