Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-18T06:40:37.545Z Has data issue: false hasContentIssue false
  • English
  • Français

Heat balance of an asphalt surface: observations and physically-based simulations

Published online by Cambridge University Press:  24 May 2006

C. Jansson ,
E. Almkvist  and
P-E. Jansson
C. Jansson
Affiliation:
Department of Land and Water Recourses Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
E. Almkvist
Affiliation:
Department of Earth Sciences, Göteborg University, Box 460, SE-405 30, Göteborg, Sweden Email: [email protected]
P-E. Jansson
Affiliation:
Department of Land and Water Recourses Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Get access

Abstract

A physically-based 1-D heat and mass transfer model was tested to estimate the heat fluxes of an asphalt surface. The model was run for two summer months for a road test site in southwest Sweden. Parameters for thermal properties, surface runoff, radiation and turbulent transfer were obtained from a description of the road stratification and from the literature. Coefficients of determination (r2) 0.94, 0.93 and 0.97 were obtained when simulated results were compared with observations of net radiation, heat flow below the surface and surface temperature respectively, all with slope coefficients close to unity. In addition, simulation results elucidated the role of water vapour transport through the asphalt-soil profile and its effect on the latent heat flow from the surface. Problems were identified with closure of the heat balance in measurements based on discrepancy between simulated and observed sensible heat flux.

Keywords

CoupModelenergy balanceroadtransport
Type
Research Article
Information
Meteorological Applications , Volume 13 , Issue 2 , June 2006 , pp. 203 - 212
Copyright
2006 Royal Meteorological Society

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)