Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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High-resolution Meteorological Simulation Using WRF-UCM over a Coastal Industrial Urban Area

WRF-UCM을 이용한 연안산업도시지역 고해상도 기상 모델링

  • Bang, Jin-Hee (Environmental Health Center, University of Ulsan College of Medicine) ;
  • Hwang, Mi-Kyoung (Environmental Health Center, University of Ulsan College of Medicine) ;
  • Kim, Yangho (Environmental Health Center, University of Ulsan College of Medicine) ;
  • Lee, Jiho (Environmental Health Center, University of Ulsan College of Medicine) ;
  • Oh, Inbo (Environmental Health Center, University of Ulsan College of Medicine)
  • 방진희 (울산대학교 의과대학 환경보건센터) ;
  • 황미경 (울산대학교 의과대학 환경보건센터) ;
  • 김양호 (울산대학교 의과대학 환경보건센터) ;
  • 이지호 (울산대학교 의과대학 환경보건센터) ;
  • 오인보 (울산대학교 의과대학 환경보건센터)
  • Received : 2019.10.21
  • Accepted : 2020.01.09
  • Published : 2020.01.31
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Abstract

High-resolution meteorological simulations were conducted using a Weather Research and Forecasting (WRF) model with an Urban Canopy Model (UCM) in the Ulsan Metropolitan Region (UMR) where large-scale industrial facilities are located on the coast. We improved the land cover input data for the WRF-UCM by reclassifying the default urban category into four detailed areas (low and high-density residential areas, commercial areas, and industrial areas) using subdivided data (class 3) of the Environmental and Geographical Information System (EGIS). The urban area accounted for about 12% of the total UMR and the largest proportion (47.4%) was in the industrial area. Results from the WRF-UCM simulation in a summer episode with high temperatures showed that the modeled temperatures agreed greatly with the observations. Comparison with a standard WRF simulation (WRF-BASE) indicated that the temporal and spatial variations in surface air temperature in the UMR were properly captured. Specifically, the WRF-UCM reproduced daily maximum and nighttime variations in air temperature very well, indicating that our model can improve the accuracy of temperature simulation for a summer heatwave. However, the WRF-UCM somewhat overestimated wind speed in the UMR largely due to an increased air temperature gradient between land and sea.

Keywords

References

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