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UM 자료를 이용한 노면온도예측모델(UM-Road)의 개발

Development of Road Surface Temperature Prediction Model using the Unified Model output (UM-Road)

  • 박문수 ((재)기상기술개발원 차세대도시농림융합기상사업단) ;
  • 주승진 ((사)대기환경모델링센터) ;
  • 손영태 (명지대학교 교통공학과)
  • Park, Moon-Soo (Weather Information Service Engine, Center for Atmospheric Science & Earthquake Research) ;
  • Joo, Seung Jin (Center for Atmospheric and Environmental Modeling) ;
  • Son, Young Tae (Department of Transportation Engineering, Myongji University)
  • 투고 : 2014.08.22
  • 심사 : 2014.10.29
  • 발행 : 2014.12.31

초록

A road surface temperature prediction model (UM-Road) using input data of the Unified Model (UM) output and road physical properties is developed and verified with the use of the observed data at road weather information system. The UM outputs of air temperature, relative humidity, wind speed, downward shortwave radiation, net longwave radiation, precipitation and the road properties such as slope angles, albedo, thermal conductivity, heat capacity at maximum 7 depth are used. The net radiation is computed by a surface radiation energy balance, the ground heat flux at surface is estimated by a surface energy balance based on the Monin-Obukhov similarity, the ground heat transfer process is applied to predict the road surface temperature. If the observed road surface temperature exists, the simulated road surface temperature is corrected by mean bias during the last 24 hours. The developed UM-Road is verified using the observed data at road side for the period from 21 to 31 March 2013. It is found that the UM-Road simulates the diurnal trend and peak values of road surface temperature very well and the 50% (90%) of temperature difference lies within ${\pm}1.5^{\circ}C$ (${\pm}2.5^{\circ}C$) except for precipitation case.

키워드

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피인용 문헌

  1. Theoretical Study on Snow Melting Process on Porous Pavement System by using Heat and Mass Transfer vol.17, pp.5, 2015, https://doi.org/10.7855/IJHE.2015.17.5.001
  2. High-resolution urban observation network for user-specific meteorological information service in the Seoul Metropolitan Area, South Korea vol.10, pp.4, 2017, https://doi.org/10.5194/amt-10-1575-2017