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ISSN : 1225-4517(Print)
ISSN : 2287-3503(Online)
Journal of Environmental Science International Vol.27 No.11 pp.1129-1140
DOI : https://doi.org/10.5322/JESI.2018.27.11.1129

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)

Hyeong-Sik Park, Sang-Keun Song*, Seung-Beom Han, Seongbin Cho
Department of Earth and Marine Sciences, Jeju National University, Jeju 63243, Korea
*Corresponding author: Sang-Keun Song, Department of Earth and Marine Sciences, Jeju National University, Jeju 63243, Korea Phone: +82-64-754-3431

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 (PM10, PM2.5, O3, NO2, CO, and SO2). 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 (≤ 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. PM10 concentrations for dust and haze were significantly higher in three cities (up to 250 μg/m3 for dust in Incheon), whereas those for the other four types were relatively lower. The concentrations of PM2.5 and its major precursor gases (NO2 and SO2) were higher (up to 69 μg/m3, 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 O3 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.

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

박형식, 송상근*, 한승범, 조성빈
제주대학교 지구해양과학과

초록

 

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