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서해 조석현상에 따른 국지기상 변화가 수도권 오존농도에 미치는 영향 KCI 등재

Impacts of Local Meteorology caused by Tidal Change in the West Sea on Ozone Distributions in the Seoul Metropolitan Area

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

In this study, the impacts of local meteorology caused by tidal changes in the West Sea on ozone distributions in the Seoul Metropolitan Area (SMA) were analyzed using a meteorological model (WRF) and an air quality (CMAQ) model. This study was carried out during the day (1200–1800 LST) between August 3 and 9, 2016. The total area of tidal flats along with the tidal changes was calculated to be approximately 912 km2, based on data provided by the Environmental Geographic Information Service (EGIS) and the Ministry of Oceans and Fisheries (MOF). Modeling was carried out based on three experiments, and the land cover of the tidal flats for each experiment was designed using the coastal wetlands, water bodies (i.e., high tide), and the barren or sparsely vegetated areas (i.e., low tide). The land cover parameters of the coastal wetlands used in this study were improved in the herbaceous wetland of the WRF using updated albedo, roughness length, and soil heat capacity. The results showed that the land cover variation during high tide caused a decrease in temperature (maximum 4.5℃) and planetary boundary layer (PBL) height (maximum 1200 m), and an increase in humidity (maximum 25%) and wind speed (maximum 1.5 ms-1). These meteorological changes increased the ozone concentration (about 5.0 ppb) in the coastal areas including the tidal flats. The increase in the ozone concentration during high tide may be caused by a weak diffusion to the upper layer due to a decrease in the PBL height. The changes in the meteorological variables and ozone concentration during low tide were lesser than those occurring during high tide. This study suggests that the meteorological variations caused by tidal changes have a meaningful effect on the ozone concentration in the SMA.

목차
Abstract
 1. 서 론
 2. 연구자료 및 방법
  2.1. 연구자료 및 모델링 방법
  2.2. 실험설계 및 연구방법
 3. 결과 및 고찰
  3.1. 모델검증
  3.2. 기상 및 오존농도 변화 분석
 4. 결 론
 REFERENCES
저자
  • 김성민(부산대학교 지구환경시스템학부) | Sung Min Kim (Division of Earth Environmental System, Pusan National University)
  • 김유근(부산대학교 대기환경과학과) | Yoo-Keun Kim (Department of Atmospheric Sciences, Pusan National University)
  • 안혜연(부산대학교 지구환경시스템학부) | Hye Yeon An (Division of Earth Environmental System, Pusan National University)
  • 강윤희(부산대학교 환경연구원) | Yoon-Hee Kang (The Institute of Environmental Studies, Pusan National University)
  • 정주희(부산대학교 환경연구원) | Ju-Hee Jeong (The Institute of Environmental Studies, Pusan National University) Corresponding author