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Validation of a road surface temperature prediction model using real-time weather forecasts
Abstract The main objective of this study is to validate a performance forecasting model for road surface temperatures ranging from 3 to 24 hours in the future using real-time weather forecasts as provided by the Korea Meteorological Administration (KMA). The model used here has been developed by researchers at the Korea Institute of Construction and Technology. The core concept of the model is based on heat transfer between road surfaces and the atmosphere. Preliminary tests were performed through comparing historically observed road surface temperatures obtained from road sensors with predicted temperatures from model runs at a specific site on the CheongWon-SangJoo Expressway. After testing, the model was partially run on the CheongWon-SangJoo Expressway at the Bo-Eun Branch of the Korea Highway Corporation to predict road surface temperatures 24 hours in advance. Test results showed that predicted road surface temperatures matched well with the observed temperatures. In addition, the average (either hourly or daily) difference between the two temperatures lies within ±2°C, indicating that the model performance is reasonable. For a real-time model run, road surface temperatures were predicted only at night as there were no instruments to measure solar radiation in real time along the roads. Nonetheless, a 12 hour forecast performed well, showing the average temperature differences between observed and predicted temperatures of about ±0.5°C.
Validation of a road surface temperature prediction model using real-time weather forecasts
Abstract The main objective of this study is to validate a performance forecasting model for road surface temperatures ranging from 3 to 24 hours in the future using real-time weather forecasts as provided by the Korea Meteorological Administration (KMA). The model used here has been developed by researchers at the Korea Institute of Construction and Technology. The core concept of the model is based on heat transfer between road surfaces and the atmosphere. Preliminary tests were performed through comparing historically observed road surface temperatures obtained from road sensors with predicted temperatures from model runs at a specific site on the CheongWon-SangJoo Expressway. After testing, the model was partially run on the CheongWon-SangJoo Expressway at the Bo-Eun Branch of the Korea Highway Corporation to predict road surface temperatures 24 hours in advance. Test results showed that predicted road surface temperatures matched well with the observed temperatures. In addition, the average (either hourly or daily) difference between the two temperatures lies within ±2°C, indicating that the model performance is reasonable. For a real-time model run, road surface temperatures were predicted only at night as there were no instruments to measure solar radiation in real time along the roads. Nonetheless, a 12 hour forecast performed well, showing the average temperature differences between observed and predicted temperatures of about ±0.5°C.
Validation of a road surface temperature prediction model using real-time weather forecasts
Yang, Choong Heon (author) / Yun, Duk-Geun (author) / Sung, Jung Gon (author)
KSCE Journal of Civil Engineering ; 16 ; 1289-1294
2012-10-30
6 pages
Article (Journal)
Electronic Resource
English
Validation of a road surface temperature prediction model using real-time weather forecasts
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