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Torbjörn Gustavsson

Universitetslektor

Torbjörn Gustavsson
Universitetslektor
Akademisk grad: Docent,
torbjorn@gvc.gu.se
031-786 1964
0709-17 02 52

Rumsnummer: 4053
Postadress: Box 460, 40530 Göteborg
Besöksadress: Guldhedsgatan 5A , 41320 Göteborg


Institutionen för geovetenskaper (Mer information)
Box 460
405 30 Göteborg
www.gvc.gu.se
gvc@gvc.gu.se

Besöksadress: Guldhedsgatan 5a , 413 20 Göteborg

Om Torbjörn Gustavsson

Forskningsprojekt

Formation of slipperiness
Detailed measurements of climatological parameters in close connection to the road surface give the background for analysis of the processes that are important for formation of slipperiness during different weather conditions. Accurate instruments are used and placed at different levels above and below the road surface for coverage of the relative importance of temperature, humidity and wind. As a compliment IR-recordings are used for detailed measurements of the road surface temperature.

The resulting friction from different weather scenarios is also analysed in order to link the information from RWIS-stations to what actually is happening on the roads. This is very important knowledge to be able to give accurate warnings and information both to maintenance personal and to other users.

Winter indexes
Winter index is a technique used in road climatology for relating cost of winter maintenance to statistics regarding weather and road slipperiness. Important research aspects are – which parameters to include in the index, definition of variables when it comes to duration and extension as well as link the weather parameters to actual need of maintenance on the roads.

Indexes are also developed in order to be used as a reference material for field station location and selection of equipment to be used at the stations. This has been shown to be a very useful complement to ordinary thermal mappings.

Information to drivers
A very important research area within road climatology is to extend the use of RWIS-data. The system is originally developed to give information to maintenance personal regarding the needs for salting and plowing. However as the system has been expanded and developed the next phase has been made possible. This implies giving information directly to the road users about severity and hazardous road weather conditions. Research and development is carried out in order to develop models that use RWIS-data, thermal mappings and topoclimatological analyse for presentation of valuable information to road users regarding the prevailing conditions.

Modelling of climate - Projecting of new roads.
The research in this part aims at adapting the local climatological model at the projecting stage of different applications where topoclimate is important to consider. By this adaptation it is possible to calculate the local variation in temperature associated with different elements in the landscape. When planning new roads it is possible to use this knowledge as a tool for comparing different alternatives of routes with respect of risk of slipperiness. The LCM is used together with a geographical information system and temperature variations are calculated for different areas in respect of weather conditions. Statistical information about meteorological conditions is obtained from synoptic weather stations and integrated in the analyse. A study from an area on the Swedish west coast is presented in the paper "GIS as a tool for planning new roads in respect of climatological factors" and a further application will be in connection with calculation of indices for classification of winter climate.

Topoclimate
The topoclimatological research focuses on the nocturnal cooling and development of temperature variations in complex terrain. Two approaches are used modelling of temperature development and extensive field measurements of the existing temperature pattern. The modelling part aims at determining the relative importance of cold air drainage in valleys regarding the establishment of temperature variations. The measurements on the other hand aim at detecting and analysing the processes acting in different environments. By combining these two parts it will be possible to link the processes acting in different scales and environments and their relative influence on temperature variations.

Pågående projekt

The road climatology group works together with several national and international partners. These projects have a focus on solutions for detecting and giving warnings about severe weather conditions along roads. Cooperation is made both with authorities, companies and universities. Please have a look at following links for further information:

www.roadidea.eu
www.sris.nu
www.bifi.nu
http://cdu.infra.kth.se

Senaste publikationer

The use of screening effects in modelling route-based daytime road surface temperature
Yumei Hu, Esben Almkvist, Fredrik Lindberg, Jörgen Bogren, Torbjörn Gustavsson
Theoretical and Applied Climatology, Artikel i vetenskaplig tidskrift 2016
Artikel i vetenskaplig tidskrift

Road Surface Wetness Variations: Measurements and Effects for Winter Road Maintenance
Lina Nordin, M. Riehm, Torbjörn Gustavsson, Jörgen Bogren
Journal of Transportation Engineering, Artikel i vetenskaplig tidskrift 2013
Artikel i vetenskaplig tidskrift

Ice formation detection on road surfaces using infrared thermometry
M. Riehm, Torbjörn Gustavsson, Jörgen Bogren, P. E. Jansson
Cold Regions Science and Technology, Artikel i vetenskaplig tidskrift 2012
Artikel i vetenskaplig tidskrift

Klimat och väder
Jörgen Bogren, Torbjörn Gustavsson
Lund, Studentlitteratur, Bok 2008
Bok

Information not data - future development of road weather information systems
Torbjörn Gustavsson, Jörgen Bogren
Geografiska Analer, Artikel i vetenskaplig tidskrift 2007
Artikel i vetenskaplig tidskrift

The use of HAM tools versus the traditional steady-state methods in the aspect of quantification of probability of undesired moisture conditions.
Krystyna Pietrzyk, Angela Sasic Kalagasidis, Torbjörn Gustavsson
Conference proceedings Healthy Buildings, Lisbon, Portugal, June 2006 , Paper i proceeding 2006
Paper i proceeding

Tema vintermodell
Jörgen Bogren, Torbjörn Gustavsson, Hanna Gaunt
Rapport 2006
Rapport

Visar 1 - 10 av 13

2016

The use of screening effects in modelling route-based daytime road surface temperature
Yumei Hu, Esben Almkvist, Fredrik Lindberg, Jörgen Bogren, Torbjörn Gustavsson
Theoretical and Applied Climatology, Artikel i vetenskaplig tidskrift 2016
Artikel i vetenskaplig tidskrift

2013

Road Surface Wetness Variations: Measurements and Effects for Winter Road Maintenance
Lina Nordin, M. Riehm, Torbjörn Gustavsson, Jörgen Bogren
Journal of Transportation Engineering, Artikel i vetenskaplig tidskrift 2013
Artikel i vetenskaplig tidskrift

2012

Ice formation detection on road surfaces using infrared thermometry
M. Riehm, Torbjörn Gustavsson, Jörgen Bogren, P. E. Jansson
Cold Regions Science and Technology, Artikel i vetenskaplig tidskrift 2012
Artikel i vetenskaplig tidskrift

2008

Klimat och väder
Jörgen Bogren, Torbjörn Gustavsson
Lund, Studentlitteratur, Bok 2008
Bok

2007

Information not data - future development of road weather information systems
Torbjörn Gustavsson, Jörgen Bogren
Geografiska Analer, Artikel i vetenskaplig tidskrift 2007
Artikel i vetenskaplig tidskrift

2006

The use of HAM tools versus the traditional steady-state methods in the aspect of quantification of probability of undesired moisture conditions.
Krystyna Pietrzyk, Angela Sasic Kalagasidis, Torbjörn Gustavsson
Conference proceedings Healthy Buildings, Lisbon, Portugal, June 2006 , Paper i proceeding 2006
Paper i proceeding

Tema vintermodell
Jörgen Bogren, Torbjörn Gustavsson, Hanna Gaunt
Rapport 2006
Rapport

Visar 1 - 10 av 13

Sidansvarig: Henrik Thelin|Sidan uppdaterades: 2017-02-04
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