Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Fluctuations of Aerosol Number Concentration in the leodo Ocean Research Station

이어도 해양종합과학기지에서의 에어로솔 수 농도 변동

  • Park, Seong-Hwa (Interdisciplinary Program of Earth Environmental Engineering, Pukyong National University) ;
  • Lee, Dong-In (Department of Environmental Atmospheric Sciences, Pukyong National University) ;
  • Seo, Kil-Jong (Atmospheric Environmental Research Institute, Pukyong National University) ;
  • You, Cheol-Hwan (Atmospheric Environmental Research Institute, Pukyong National University) ;
  • Jang, Min (Atmospheric Environmental Research Institute, Pukyong National University) ;
  • Kang, Mi-Yeong (Atmospheric Environmental Research Institute, Pukyong National University) ;
  • Jang, Sang-Min (Interdisciplinary Program of Earth Environmental Engineering, Pukyong National University) ;
  • Kim, Dong-Chul (Science Applications International Cooperation, NCEP/EMC) ;
  • Choi, Chang-Sup (Oceanographic Division, National Oceanographic Research Institute) ;
  • Lee, Byung-Gul (Department of Civil Engineering, Jeju National University)
  • 박성화 (부경대학교 지구환경공학연협동과정) ;
  • 이동인 (부경대학교 환경대기과학과) ;
  • 서길종 (부경대학교 대기환경연구소) ;
  • 유철환 (부경대학교 대기환경연구소) ;
  • 장민 (부경대학교 대기환경연구소) ;
  • 강미영 (부경대학교 대기환경연구소) ;
  • 장상민 (부경대학교 지구환경공학연협동과정) ;
  • 김동철 ;
  • 최창섭 (국립혜양조사원 해양과) ;
  • 이병걸 (제주대학교 토목학과)
  • Published : 2009.07.31
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Abstract

To examine the fluctuations of aerosol number concentration with different size in the boundary layer of marine area during summer season, aerosol particles were assayed in the Ieodo Ocean Research Station, which is located 419 km southwest of Marado, the southernmost island of Korea, from 24 June to 4 July, 2008. The Laser Particle Counter (LPC) was used to measure the size of aerosol particles and NCEP/NCAR reanalysis data and sounding data were used to analyze the synoptic condition. The distribution of aerosol number concentration had a large variation from bigger particles more than 3 ${\mu}m$ in diameter to smaller particles more than 1 ${\mu}m$ in diameter with wind direction during precipitation. The aerosol number concentration decreased with increasing temperature. An increase (decrease) of small size of aerosol (0.3${\sim}$0.5 ${\mu}m$ in diameter) number concentration was induced by convergence (divergence) of the wind fields. The aerosol number concentration of bigger size more than 3 ${\mu}m$ in diameter after precipitation was removed as much as 89${\sim}$94% compared with aerosol number concentration before precipitation. It is considered that the larger aerosol particles would be more efficient for scavenging at marine boundary layer. In addition, the aerosol number concentration with divergence and convergence could be related with the occurrence and mechanism of aerosol in marine boundary layer.

Keywords

References

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