Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Study of the Urban Heat Island in Seoul using Local Analysis System

지역규모 분석 모델을 이용한 서울 도시열섬 특성 연구

  • Chun, Ji Min (Weather Information Service Engine, Center for Atmospheric and Earthquake Research) ;
  • Lee, Seon-Yong (National Institute of Meteorological Research) ;
  • Kim, Kyu Rang (National Institute of Meteorological Research) ;
  • Choi, Young-Jean (Weather Information Service Engine, Center for Atmospheric and Earthquake Research)
  • 천지민 ((재)기상기술개발원 차세대 도시농림 융합기상 사업단) ;
  • 이선용 (국립기상연구소 응용기상연구과) ;
  • 김규랑 (국립기상연구소 응용기상연구과) ;
  • 최영진 ((재)기상기술개발원 차세대 도시농림 융합기상 사업단)
  • Received : 2013.11.28
  • Accepted : 2014.03.27
  • Published : 2014.04.30
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Abstract

A very high resolution weather analysis system (VHRAS) of 50 m horizontal resolution is established based on LAPS. VHRAS utilizes the 3 hourly forecast data of the Unified Model (UM) of the Korea Meteorological Administration (KMA) with the horizontal resolution of 12 km as initial guess fields. The analysis system ingests the automatic weather station (AWS) data as input observations. The analysis system operates every hour for Seoul, Korea region in real time basis. It takes less than 10 minutes for one analysis cycle. The size of grid of the analysis domain is $800{\times}660$, respectively. The analysis results from December 2010 to February 2011 showed that the mean biases of temperature, maximum and minimum temperature were -0.07, 1.6, $0.2^{\circ}C$, respectively. The temperature in the central part of the city revealed relatively higher value than that of the surrounding mountainous areas, which showed a heat island feature. The heat island appears in zonal direction since the central city region is developed along a large river. Along the heat island, the eastern region was warmer than the western region. The warmer temperature in the western part of the heat island was caused by anthropogenic heat change in conjunction with the change of land use. This system will provide more reliable weather data and information in Seoul.

Keywords

References

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