Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Spatio-temporal Characteristics of the Frequency of Weather Types and Analysis of the Related Air Quality in Korean Urban Areas over a Recent Decade (2007-2016)

최근 10년간(2007~2016년) 한반도 대도시 일기유형 빈도의 시·공간 특성 및 유형별 대기질 변화 분석

  • Park, Hyeong-Sik (Department of Earth and Marine Sciences, Jeju National University) ;
  • Song, Sang-Keun (Department of Earth and Marine Sciences, Jeju National University) ;
  • Han, Seung-Beom (Department of Earth and Marine Sciences, Jeju National University) ;
  • Cho, Seongbin (Department of Earth and Marine Sciences, Jeju National University)
  • 박형식 (제주대학교 지구해양과학과) ;
  • 송상근 (제주대학교 지구해양과학과) ;
  • 한승범 (제주대학교 지구해양과학과) ;
  • 조성빈 (제주대학교 지구해양과학과)
  • Received : 2018.10.16
  • Accepted : 2018.11.12
  • Published : 2018.11.30
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Abstract

Temporal and spatial characteristics of the frequency of several weather types and the change in air pollutant concentrations according to these weather types were analyzed over a decade (2007-2016) in seven major cities and a remote area in Korea. This analysis was performed using hourly (or daily) observed data of weather types (e.g., mist, haze, fog, precipitation, dust, and thunder and lighting) and air pollutant criteria ($PM_{10}$, $PM_{2.5}$, $O_3$, $NO_2$, CO, and $SO_2$). Overall, the most frequent weather type across all areas during the study period was found to be mist (39%), followed by precipitation (35%), haze (17%), and the other types (${\leq}4%$). In terms of regional frequency distributions, the highest frequency of haze (26%) was in Seoul (especially during winter and May-June), possibly due to the high population and air pollutant emission sources, while that of precipitation (47%) was in Jeju (summer and winter), due to its geographic location with the sea on four sides and a very high mountain. $PM_{10}$ concentrations for dust and haze were significantly higher in three cities (up to $250{\mu}g/m^3$ for dust in Incheon), whereas those for the other four types were relatively lower. The concentrations of $PM_{2.5}$ and its major precursor gases ($NO_2$ and $SO_2$) were higher (up to $69{\mu}g/m^3$, 48 ppb, and 16 ppb, respectively, for haze in Incheon) for haze and/or dust than for the other weather types. On the other hand, there were no distinct differences in the concentrations of $O_3$ and CO for the weather types. The overall results of this study confirm that the frequency of weather types and the related air quality depend on the geographic and environmental characteristics of the target areas.

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References

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