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Title: ON THE PREDICTION OF ROAD CONDITIONS BY A COMBINED ROAD LAYER-ATMOSPHERIC MODEL IN WINTER
Accession Number: 00636287
Record Type: Component
Availability: Find a library where document is available Abstract: An effective forecasting system for slippery road warnings has been operational in Denmark for some years and was recently extended to the whole country except for the island Bornholm. The system is based on a network of road-weather stations throughout the country that submit a continual flow of data, every 10 min, to the road master; the data are the current values of road-surface temperature, air temperature, and humidity. An instrument to measure the amount of resting salt is also installed in connection with most stations. Before making any decisions, the road master also has access to very short range weather forecasts that are issued every other hour and are valid for 3 hr. Each forecast is limited to a specific county. So far the forecasts have been worked out manually, but an automatic forecasting system based on a combined model for the prediction of atmospheric and road surface changes has been developed and tested to some extent. The atmospheric model is called the HIRLAM (High Resolution Limited Area Model). The model results are continually adjusted by observations from nearby weather stations so that the predicted parameters can be corrected before they are entered in the combined model. The purpose is to produce a short-range forecast of air temperature, humidity, and road-surface temperature for each of the more than 200 road-weather stations in Denmark. The combined model was tested last winter in five locations in Denmark. Some results of this test will be presented.
Supplemental Notes: This paper appears in Transportation Research Record No. 1387, Snow Removal and Ice Control Technology; Papers presented at the 3rd International Symposium on Snow Removal and Ice Control Technology, September 14-18, 1992, Minneapolis, Minnesota. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01495762
Language: English
Authors: Voldborg, HenrikPagination: p. 231-235
Publication Date: 1993
Serial: Conference:
Third International Symposium on Snow Removal and Ice Control Technology
Location:
Minneapolis Minnesota ISBN: 0309054583
Features: Figures
(7)
; References
(1)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Highways; Maintenance and Preservation; I62: Winter Maintenance
Files: TRIS, TRB
Created Date: Sep 3 1993 12:00AM
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