Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Columnar Aerosol Properties at Yongin According to Transport Paths of Back Trajectories

역궤적 이동경로별 용인지역의 컬럼에어로졸 특성

  • Park, Jisoo (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Choi, Yongjoo (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Ghim, Young Sung (Department of Environmental Science, Hankuk University of Foreign Studies)
  • 박지수 (한국외국어대학교 환경학과) ;
  • 최용주 (한국외국어대학교 환경학과) ;
  • 김영성 (한국외국어대학교 환경학과)
  • Received : 2016.12.30
  • Accepted : 2017.03.01
  • Published : 2017.04.30
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Abstract

Columnar aerosol properties retrieved from solar radiation were investigated at the Yongin (YGN) SKYNET site over seven years from October 2008 to October 2015. Hourly averages were calculated when the data were available, and back trajectories were calculated to examine the effects of regional transport. Data recovery rate was low at 6.6%, primarily because solar radiation was measured only under daytime clear-sky conditions. Mean values of the fine-mode volume fraction (FMVF) as well as its seasonal variation were similar to those of $PM_{2.5}/PM_{10}$ although the coarse-mode fraction of column aerosols tended to be slightly larger. The values of single scattering albedo (SSA) and FMVF were lower in spring due to the effects of mineral dust, and higher in summer due to secondarily-formed inorganic ions. Back trajectories were grouped into five clusters according to the directions of transport paths. Aerosol loading was highest for Cluster 2 from the northwest, but SSA and FMVF were not particularly high or low because aerosols were composed of various materials with different properties. Aerosol loading was lowest for Cluster 5 from the Pacific Ocean passing through the south end of Japan, whose SSA and FMVF were highest as secondarily-formed inorganic ions were mixed.

Keywords

References

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