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THE DEVELOPMENT OF ACCURATE AUTOMATIC ROAD-WEATHER FORECASTS.
| 题名： | THE DEVELOPMENT OF ACCURATE AUTOMATIC ROAD-WEATHER FORECASTS. |
| 作者： | Sass-BH; Petersen-C |
| 关键词： | Accuracy-; Atmospheric-temperature; Denmark-; Forecasting-; Precipitation-Meteorology; Road-weather-information-systems; Surface-course-Pavements; Temperature-measuring-instruments; Weather-forecasting |
| 摘要： | The prediction of road weather conditions requires the production of accurate forecasts of temperature, humidity and precipitation at the road surface. It is a big challenge to obtain sufficient forecast accuracy of the road weather in order to produce correct warnings on slippery road conditions. This paper discusses the development of an automatic road weather forecasting system in Denmark with a goal of predicting as accurately as possible the relevant meteorological parameters such as road surface temperature, precipitation and dew point temperature 5 hours ahead. The numerical forecast model developed is physically based on the computation of the heat budget components at the road surface. The model requires input from an atmospheric numerical forecast model 'DMI-HIRLAM' run operationally at the Danish Meteorological Institute. Additionally, a new 3-year development project has been established in cooperation with the road authorities, based on new potential possibilities to improve cloud cover and precipitation prediction. The paper also provides a brief introduction to the model upgrades established during the first year of the new project. |
| 总页数： | Conference Title: 11th International Road Weather Conference (http://www.sirwec.org). Location: Sapporo, Japan. Sponsored by: Standing International Road Weather Commission. Held: 20020126-20020128. 2002/01. pp7 |
| 报告类型： | 科技报告 |
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