FORECASTING AND MONITORING OF ICE ON THE ROAD
The Monitoring System, Forecasts, the Meteorological Department of ARPA Piemonte for roads and motorways
The Meteorological Department of Arpa Piemonte has been provided with a set of products for the monitoring and the forecast of ice formation over the main roads of the Susa Valley, Chisone Valley and Pellice Valley and over the stretches of regional motorways that join Turin to Milan and Turin to Piacenza. The first step to reach this goal was a Thermal Mapping of the principal stretches of the roads of the above-mentioned Alpine Valleys. Through the Thermal Mapping, that points out minimum temperatures variations of road surface, it is possible to identify, under the same meteorological conditions, which sections are relatively warmer and colder compared to the average, and therefore those representative of that particular stretch of road or climatic domain. This work allows the optimisation of the number and the location of the monitoring stations in some strategic points together with the extrapolation of the road surface temperature along all the road network. Another step, to complete an efficient ice forecast service, has been to provide a numerical forecast product of temperature and road surface conditions for the following 24 hours (associated with a textual bulletin addressed to the road maintenance operators).
This monitoring and forecast of temperature and road surface conditions constitutes a Service that reveals itself to be of great importance for a good and careful management of road surface conditions during the winter period. Moreover, the damages to the civil works and to the environment, due to the excessive and indiscriminate use of salt and de-icing agent, are minimised through the identification and the localisation of the de-icing chemical spreading areas. |