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Characteristics of New Particle Formation and Growth Events Observed at Gosan Climate Observatory in Fall 2009

제주 고산에서 2009년 가을에 관측된 입자 생성 및 성장 현상의 특성

  • Kim, Yumi (School of Earth and Environmental Sciences, Seoul National University) ;
  • Kim, Sang-Woo (School of Earth and Environmental Sciences, Seoul National University) ;
  • Yoon, Soon-Chang (School of Earth and Environmental Sciences, Seoul National University) ;
  • Jang, Im-Suk (Air Quality Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Lee, Suk-Jo (Air Quality Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Lee, Meehye (Department of Earth and Environmental Sciences, Korea University) ;
  • Kim, Ji-Hyoung (School of Earth and Environmental Sciences, Seoul National University)
  • 김유미 (서울대학교 지구환경과학부) ;
  • 김상우 (서울대학교 지구환경과학부) ;
  • 윤순창 (서울대학교 지구환경과학부) ;
  • 장임석 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 이석조 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 이미혜 (고려대학교 지구환경과학과) ;
  • 김지형 (서울대학교 지구환경과학부)
  • Received : 2010.10.06
  • Accepted : 2011.02.01
  • Published : 2011.03.30

Abstract

We investigated characteristics of new particle formation and growth events observed at Gosan climate observatory using Scanning Mobility Particle Sizer (SMPS) measurements of particle number size distribution with 54 size ranges from 10 to 487 nm in October 2009. Four days (17~20 October) and five days (22~26 October) were classified into strong new particle formation and growth event ($N_S$) and weak particle formation and growth event ($N_W$), respectively. $N_S$ and $N_W$ divided by increase of aerosol number concentration in nucleation mode and continuity of growth from nucleation to Aitken mode. Particle growth rates of $N_S$ (5.34~$9.19nm\;h^{-1}$) were greater than that of $N_W$ (2.15~$3.53nm\;h^{-1}$). $N_S$ and $N_W$ were analyzed with synoptic pattern over East Asia, meteorological elements, and sulfur dioxide ($SO_2$) measured at Gosan. We found that $N_S$ was characterized by a fast and northwesterly wind accompanied cold and dry airmass, but $N_W$ was affected airmass originated from South China and come through the Korea Peninsula. The events ($N_S$ and $N_W$) occurred at conditions of high solar flux ($&gt;700W\;m^{-2}$) and low relative humidity (< 60%). The $SO_2$ concentration on $N_S$ and $N_W$ was higher than that on case of non observed new particle formation.

Keywords

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