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http://dx.doi.org/10.14191/Atmos.2018.28.4.469

Comparison of Ground-Based Particulate Matter Observations in the Seodaemun-gu District, Seoul  

Koo, Ja-Ho (Department of Atmospheric Sciences, Yonsei University)
Lee, Seoyoung (Department of Atmospheric Sciences, Yonsei University)
Kim, Minseok (Department of Atmospheric Sciences, Yonsei University)
Park, Joonghee (Department of Atmospheric Sciences, Yonsei University)
Jeon, Soo Ahn (Department of Atmospheric Sciences, Yonsei University)
Noh, Hyunsuk (Department of Atmospheric Sciences, Yonsei University)
Kim, Jhoon (Department of Atmospheric Sciences, Yonsei University)
Lee, Yun Gon (Department of Atmospheric Sciences, Chungnam National University)
Publication Information
Atmosphere / v.28, no.4, 2018 , pp. 469-477 More about this Journal
Abstract
We performed the comparison of observed $PM_{10}$ and $PM_{2.5}$ at both the Yonsei University and the AIRKOREA site in the same Seodaemun-gu district, Seoul from March to December 2016. Generally, the moderate correlations between two sites were found for both $PM_{10}$ and $PM_{2.5}$, but monthly difference was somewhat occurred, implying that the measurement situation is not equally maintained even in a closely located area. Particularly correlations became weaker in June and July, which seems the impact of rainy conditions. Correlations between two stations were higher for $PM_{10}$ compared to $PM_{2.5}$, probably indicating the spatially larger difference of fine mode particle. Monthly mean variation was similar between two sites showing a maximum in March and minimum in August. Diurnal variation was somewhat different: morning peak at Yonsei University but evening peak at the Seodaemun-gu AIRKOREA site, reflecting the difference of local air condition. We also compared the extent of $PM_{10}$ and $PM_{2.5}$ according to the local wind speed and direction. In general, the level of particulate matter was high when the wind is blowing from the northwestern area with low wind speed, meaning the high accumulation effect of transported air particles. Findings of this study can be usefully considered for the investigation about the discrepancy of aerosol measurement in a local scale.
Keywords
Airborne aerosol; $PM_{10}$; $PM_{2.5}$; AIRKOREA;
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