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Statistical Analysis of PM10 and Meteorological Data in Pohang, a Steel-Industrial City

철강 산업도시 포항의 미세먼지 농도 및 관련 기상자료에 대한 통계적 분석

  • Choi, Min-Suk (Air Quality Lab., Department of Environmental Engineering, Yeungnam University) ;
  • Baek, Sung-Ok (Air Quality Lab., Department of Environmental Engineering, Yeungnam University)
  • 최민석 (영남대학교 환경공학과 대기환경연구실) ;
  • 백성옥 (영남대학교 환경공학과 대기환경연구실)
  • Received : 2016.04.25
  • Accepted : 2016.05.25
  • Published : 2016.06.30

Abstract

Pohang is a well-known industrial city in Korea with a large steel-industrial complexes. The biggest environmental issue in the city is associated with fine particulate matter (hereinafter, $PM_{10}$). The concentration of $PM_{10}$ is generally dependent on the local emission sources and meteorological conditions. Iron and steel industrial complexes are likely serious pollution sources of $PM_{10}$ in Pohang. In this study, daily $PM_{10}$ data from a large database from the year of 2000 to 2012 were statistically analyzed, together with meteorological data. The average concentrations of $PM_{10}$ were evaluated according to the frequency of Asian dust, haze, mist, and fog. The number of days exceeding short-term standard for $PM_{10}$ were also examined, taking into consideration of weather conditions. It was found that the concentration of $PM_{10}$ was reduced about 18% to 26% because of precipitation. In addition, the effects of wind direction and wind speed on the $PM_{10}$ concentrations were investigated.

Keywords

$PM_{10}$;Steel industry;Asian dust;Haze;Wet scavenging;Wind speed

Acknowledgement

Supported by : 경북녹색환경지원센터

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