도심의 거리 협곡에서 건폐율과 외관비에 따른 미세먼지 농도의 미시적 분포 추정
Estimating the Microscopic Distribution of PM10 according to Building Coverage Ratios and Aspect Ratios in Urban Street Canyons
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초록
인간의 건강을 위협하는 미세먼지(PM10)는 사회적재난이 되었다. 본 연구는 미세먼지 농도가 높게 나타나는 도심의 거리 협곡을 배경으로 건폐율 및 외관비와 미세먼지 농도 간의 관계를 규명하고자 한다. 이를 위해 건폐율 변화에 따라 대안을 설정하고ENVI-met 소프트웨어로 시뮬레이션을 진행하였다. 대안별 미세먼지 농도 및 기온, 풍속, 등의 데이터를추출한 후 미세먼지 농도를 종속변수로, 건폐율을 독립변수로, 풍향, 풍속, 기온을 통제 변수로 설정하고다중회귀분석을 진행하였다. 분석 결과, 거리 협곡건물의 건폐율이 증가할수록 미세먼지 농도가 증가함을 밝혔다. 이를 통하여 본 연구는 거리 협곡에서건폐율에 따른 미세먼지 농도 변화를 제시하고 건폐율을 고려한 도시설계가 필요함을 시사한다.
Abstract
Particulate matter (PM10) that threatens human health has now become a social disaster. The urban form and physical characteristics are important factors that determine the dispersion of air pollutants. The aim of this paper is to explain the relationship building coverage ratios and the concentration of PM10 in urban street canyons where the concentration of PM10 is high. For this study, ENVI-met software was used after setting alternatives according to the change in the building coverage ratios and aspect ratio. Multiple regression analysis was performed with the concentration of PM10 as a dependent variable, building coverage ratios as an independent variable, and wind direction, wind speed, and air temperature as control variables. As a result, it was found that the concentration of PM10 increased as the building coverage ratios of the street canyons increased. This study suggests the change of the concentration of PM10 according to the building coverage ratios in street canyons and suggests that building coverage ratios should be considered in urban design.
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