• Title/Summary/Keyword: 미세먼지 분포도

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A Proposal of Direction of Wind Ventilation Forest through Urban Condition Analysis - A Case Study of Pyeongtaek-si - (도시 여건 분석을 통한 바람길숲 조성방향 제시 - 평택시를 사례로 -)

  • SON, Jeong-Min;EUM, Jeong-Hee;SUNG, Uk-Je;BAEK, Jun-Beom;KIM, Ju-Eun;OH, Jeong-Hak
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.4
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    • pp.101-119
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    • 2020

  • Recently, as a plan to improve the particulate matter and thermal environment in the city, urban forests acting as wind ventilation corridor(wind ventilation forest) are promoted nationwide. This study analyzed the conditions for the creation of wind ventilation forest(vulnerable areas of the particulate matter and thermal environment, distribution of wind ventilation forest, characteristics of ventilation corridor) of in Pyeongtae-si, one of the target cities of wind ventilation forest project. Based on the results, the direction of developing on the wind ventilation forest in Pyeongtaek-si was suggested. As a result of deriving areas vulnerable to particulate matter and thermal environment, it was most vulnerable in urban areas in the eastern area of Pyeongtaek-si. Especially, emissions were high from industrial complexes and roads such as the Pyeongtaek-si thermal power plant, ports, and the national road no. 1. The wind ventilation forest in Pyeongtaek-si was distributed with small-scale windgenerating forests, wind-spreading forests, and wind-connection forests fragmented and disconnected. The characteristic of the overall wind ventilation corridor in Pyeongtaek-si is that the cold air generated from Mt.Mubong, etc., strongly flowed into Pyeongtaek-si and flowed in the northwest direction. Therefore, it is necessary to preserve and expand the wind-generating forests in Pyeongtaek-si in the long term, and it was important to create wind-spreading forests and wind-connection forests so that cold air could flow into the vulnerable area. In addition, in industrial complexes and roads where particulate matter is generated, planting techniques should be applied to prevent the spread of particulate matte to surrounding areas by creating wind-spreading forests considering the particulate matter blocking. This study can be used not only as the basis data for wind ventilation forest project in Pyeongtaek-si, but also as the basis data for urban forest creation and management.

  • https://doi.org/10.11108/kagis.2020.23.4.101 인용 PDF KSCI

Composition and pollution characteristics of PM10 and PM2.5 particles at Gosan site of Jeju Island in 2008 (PM10, PM2.5 미세먼지의 조성 및 오염 특성: 2008년 제주도 고산지역 측정 결과)

  • Lee, Soon-Bong;Jung, Duk-Sang;Cho, Eun-Kyung;Kim, Hyeon-A;Hwang, Eun-Yeong;Kang, Chang-Hee
    • Analytical Science and Technology
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    • v.24 no.4
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    • pp.310-318
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    • 2011

  • The collection of atmospheric $PM_{10}$ and $PM_{2.5}$ particle samples was made at Gosan site of Jeju Island, which is one of the most representative background sites in Korea. Their chemical compositions have been analyzed to explore the pollution characteristics and emission sources. The mass concentrations of $PM_{10}$ and $PM_{2.5}$ particles were $37.6{\pm}20.1$ and $22.9{\pm}14.3{\mu}g/m^3$, respectively, with the content of $PM_{2.5}$ to $PM_{10}$ as 61%. The $PM_{2.5}/PM_{10}$ ratios of nss-$SO_4^{2-}$, $NO_3^-$, and $NH_4^+$ were 0.94, 0.56, 1.02, respectively, indicating that these components were distributed mostly in the fine fractions. Based on the factor analysis, it was found that the compositions of fine particles were mainly influenced by anthropogenic sources, followed by soil or marine sources. The results of the backward trajectory analysis indicate that the concentrations of nss-$SO_4^{2-}$, $NO_3^-$, $NH_4^+$, nss-$Ca^{2+}$, and Pb were high when the air parcels moved from the China continent, while relatively low with the air parcels coming from North Pacific Ocean and/or East Sea.

  • https://doi.org/10.5806/AST.2011.24.4.310 인용 PDF KSCI

Particle Size Distribution of Seoul Metropolitan Area (수도권지역 미세입자의 입경분포)

  • 유민경;조석연;한진석;이석조
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.05b
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    • pp.195-196
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    • 2003

  • 대기에서 입경에 따른 먼지의 무게농도를 측정하는 방법은 cascade impactor와 MOUDI(Micro-Orifice Uniform Deposit Impactor) 등이 비교적 잘 정립되어 있는 반면, 입경에 따른 먼지 개수를 측정하는 방법에 대한 연구는 아직 미진한 상태이다(McMurry, 2000). 현재 시도되고 있는 먼지 입경별 개수 측정방법은 SMPS와 APS를 결합하여 직경 0.005~10 $\mu\textrm{m}$에 이르는 먼지의 입경에 따른 개수를 측정하는 방법이다. 그러나, 일반대기 조건에서 SMPS와 APS의 정확성이 문제시되는데, 특히0.5~10$\mu\textrm{m}$의 먼지를 대상으로 하는APS는 대기에서 포집 효율이 낮을 수 있으며 또한 저농도에 대한 정확성도 문제시될 수 있다(Shen et al, 2002; Kim et al., 2002) (중략)

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