VAEGHALKANS BEROENDE AV MIKROOCH LOKALKLIMATISKA FAKTORER (THE INFLUENCE OF MICRO- AND MESOCLIMATOLOGICAL FACTORS ON ICE-FORMATION ON ROADS)
The 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. Measuring trips by car is an appropriate method of collecting data for local climate investigations; the results from a large number of measuring points becoming available within a limited period of time. As regards more large-scale mean value calculations, stationary instruments are to be preferred to measuring trips. Information on surface temperatures can be given by apparatus for registering heat radiation, e.g. airborn equipment for infrared thermography and infrared cameras. After a preliminary investigation experimental ice-warning devices were located 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. Data were sent by radio to a central unit. Finally some experiments have been made in testing a carbon ice-warning device and in mapping radiation fog close to the road.
- Text in Swedish.
Goeteborg Univ, Sweden,
- Lindqvist, S
- Publication Date: 1975
- Pagination: 43 p.
- TRT Terms: Climatology; Fog; Highway transportation; Humidity; Ice formations; Measurement; Meteorology; Roads; Surveying; Surveying; Temperature; Warning systems; Wind
- Subject Areas: Design; Geotechnology; Highways;
- Accession Number: 00328329
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: GUNI-8
- Files: NTIS
- Created Date: Apr 15 1981 12:00AM