Winter model: roadside salt exposure under different weather conditions
2008 (English)In: Surface transportation weather and snow removal and ice control technology, Washington DC: Transportation Research Board, TRB , 2008, 159-170 p.Conference paper (Other academic)
The environmental model is a submodel in the Swedish winter maintenance management system, the Winter Model. The Winter Model will make it possible to assess the most important effects and their monetary value of changes in winter maintenance strategies and operations in Sweden. The effects are assessed for road users, road administrators, and the environment. Modeling the impact of the use of chemical anti- and deicing on roadside environment requires knowledge of the roadside exposure to salt, the vulnerability or dose-response relationship of the modeled environmental subjects and, preferably, the cost of the following impacts. In this paper, research results from some recent field studies are used to illustrate how the transport mechanisms responsible for the roadside exposure to deicing salt is working under different weather conditions. In order to improve the current model describing the roadside exposure to salt for even better prediction, the occurrence of plowing actions is also suggested to be incorporated into the model. Further it is suggested that, if also the presumably small depositions of dry salt aerosol particles on larger distance are to be described, the transport mechanism of dry salt crystals, breaking up into small airborne fragments and transported by the wind is also to be incorporated into the model describing the roadside exposure to deicing salt. The results in this paper are beeing incorporated into the Swedish Winter Model.
Place, publisher, year, edition, pages
Washington DC: Transportation Research Board, TRB , 2008. 159-170 p.
, Transportation research circular, ISSN 0097-8515 ; E-C126
Deicing, Sodium chloride, Particulate matter, Roadside, Distribution (gen), Pollution concentration, Weather, Wind
Research subject Road: Maintenance, Road: Winter maintenance; Road: Transport, society, policy and planning, Road: Environment
IdentifiersURN: urn:nbn:se:vti:diva-5214OAI: oai:DiVA.org:vti-5214DiVA: diva2:674044
Fourth national conference on surface transportation weather and seventh international symposium on snow removal and ice control technology, June 16-19, 2008, Indianapolis, Indiana