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Aerodynamic Particle Sizer (APS)를 이용한 고농도 $PM_{10}$ 사례 중 황사 판별기법 개발
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  • Aerodynamic Particle Sizer (APS)를 이용한 고농도 $PM_{10}$ 사례 중 황사 판별기법 개발
저자명
이영곤,조천호,김명수,Lee. Young-Gon,Cho. Chun-Ho,Kim. Myoung-Soo
간행물명
대기
권/호정보
2008년|18권 1호|pp.25-32 (8 pages)
발행정보
한국기상학회
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정기간행물|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Log normalized volume size distribution (dV/dlog$D_p$) with 52 size ranges from 0.5 to $20.0{mu}m$ was measured for the cases of high $PM_{10}$ mass concentration (> $200{mu}gm^{-3}$) using the Aerodynamic Particle Sizer (APS) at the Korea Global Atmosphere Watch Center (KGAWC) from 6 April, 2006 to 5 April, 2007. Black Carbon (BC), gaseous pollutants of $NO_X$ and $SO_2$ and ${AA}ngstrddot{o}m$ exponent were also measured to examine the properties of the volume size distribution. From distinct difference of the high volume concentration (> $100{mu}m^3cm^{-3}$), the volume size distribution for each event day was clasified into four types: (1) Type 1 had the high volume concentration for supermicron particles from 2.3 to $6.0{mu}m$ and maximum average volume concentration was $160.7{mu}m^3cm^{-3}$ at $3.5{mu}m$. (2) Type 2 represented the high volume concentration in the both size range of submicron ($0.7-1.0{mu}m$) and supermicron particles ($2.1-4.1{mu}m^3cm^{-3}$ and $136.2{mu}m^3cm^{-3}$ were found at 0.8 and $3.3{mu}m$ respectively. (3) Type 3 showed the high volume concentration in the size range of $0.5-3.5{mu}m$ and highest volume concentration of $201.1{mu}m^3cm^{-3}$ at the particle size bin of $0.8{mu}m$. (4) Type 4 was characterized by the high volume concentration for the fine particles less than $1.2{mu}m$ and very high concentration of $446.8{mu}m^3cm^{-3}$. ${AA}ngstrddot{o}m$ exponent, concentration of gaseous ($NO_X$ and $SO_2$), and particle (BC) pollutants suggested that Type 1 was a typical volume size distribution for the Asian dust and Type 3 provided transportation of air pollutants. The distribution in Type 2 found to have both characteristics of the Asian dust and air pollutants, and Type 4 was took place during the foggy atmosphere containing high density of local pollutants. Based on the properties of volume size distribution, we can identify the three major events contributing the increase of $PM_{10}$ mass concentration, and hope to provide a guideline for discriminating the Asian dust from high $PM_{10}$ events. More case studies and longeto advance this determination method.