THE INFLUENCE OF MICRO- AND MESOCLIMATOLOGICAL FACTORS ON ICE-FORMATION ON ROADS

VAEGHALKANS BEROENDE AV MIKRO- OCH LOKALKLIMATISKA FAKTORER

Firstly this investigation determines sites with high ice frequency along motorways in southern Sweden. Measurements were made during journeys for data collection by car. It was found that the climatic environments favouring ice formation were small valleys during nights with calm and clear weather and uplands during some other weather conditions. A similar investigation was undertaken in central Sweden. The main project involves a general study of the connection between meso- and microclimates and ice-formation on roads, methods to find suitable sites for ice warning devices, and a discussion of micro-meteorological aspects on the construction of such devices. The use of a car is an appropriate method of collecting data for local climate investigations. As regards more large-scale mean value calculations, stationary instruments are to be preferred to data collection. Information on surface temperatures can be given by airborne equipment for infrared thermography and infrared cameras. After a preliminary investigation experimental ice-warning devices were stationed on selected sites. Each site was instrumented to record atmospheric temperature and humidity at two levels, wind speed, road surface wetness and temperature below road surface. Finally, tests with a vehicle-mounted ice warning device and mapping radiation fog close to the road were carried out. /TRRL/

  • Corporate Authors:

    Goeteborgs Universitet

    Foeretagsekonomiska Institutionen, Vasagatan 3
    Goeteborg,   Sweden 
  • Authors:
    • Lindqvist, S
  • Publication Date: 1975

Language

  • Swedish

Media Info

  • Features: Figures; References;
  • Pagination: 41 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184381
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: GUNI Report 3 Monograph
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM