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A Road Surface Temperature Prediction Modeling for Road Weather Information System  

Yang, Chung-Heon (한국건설기술연구원 도로연구실)
Park, Mun-Su ((사)대기환경모델링센터)
Yun, Deok-Geun (한국건설기술연구원 도로연구실)
Publication Information
Journal of Korean Society of Transportation / v.29, no.2, 2011 , pp. 123-131 More about this Journal
Abstract
This study proposes a model for road surface temperature prediction on basis of the heat-energy balance equation between atmosphere and road surface. The overall model is consisted of two types of modules: 1) Canopy 1 is used to describe heat transfer between soil surface and atmosphere; and 2) Canopy 2 can reflect the characteristics of pavement type. Input data used in the model run is obtained from the Korea Meteorological For model validation, the observed and predicted surface temperature data are compared using data collected on MoonEui Bridge along CheongWon-Sangju Expressway, and the comparison is made on winter and other seasons separately. Analysis results show that average difference between two temperatures lies within ${\pm}2^{\circ}C$ which is considered as appropriate from a micrometeorology point of view. The model proposed in this paper can be adopted as a useful tool in practical applications for winter maintenance. This study being a fundamental research is anticipated to be a starting point for further development of robust surface road temperature prediction algorithms.
Keywords
Road Weather Information; Road Surface Temperature; Heat Energy Balance; Meteorological data; Heat Transfer;
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