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A Study on the Impact of an Improved Road Pavement Technology on the Thermal Structure of Atmospheric Boundary Layer

도로 포장 기술 개선에 따른 대기 경계층의 열 변화에 관한 연구

  • Published : 2008.10.31

Abstract

In order to clarify the impact of anti-heat insulation pavement on the thermal structure of atmospheric boundary layer, field experiments and numerical simulations were carried out. Field experiment with various pavements were also conducted for 24 hours from 09LST 19 June 2007. And numerical experiment mainly focused on the impact of albedo variation, which is strongly associated with thermal characteristics of insulated pavement materials, on the temporal variation of planterly boundary layer. Numerical model used in this study is one dimension model with Planterly Boundary Layer developed by Oregon State University (OSUPBL). Because anti-heat insulation pavement material shows higher albedo value, not only maximum surface temperature but also maximum surface air temperature on anti-heat insulation pavement is lower than that on asphalt. The maximum value of surface temperature only reach on $49.5^{\circ}C$. As results of numerical simulations, surface sensible heat flux and the height of mixing layer are also influenced by the values of albedo. Therefore the characteristics of urban surface material and its impact on atmosphere should be clarified before the urban planning including improvement of urban heat environment and air quality.

Keywords

Insulation pavement material;Atmospheric boundary layer;OSUPBL;Numerical experiment;Urban heat environment

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  1. Observational Study to Investigate Thermal Environment and Effect of Clean- Road System over a Broad Way of Daegu in Summer vol.24, pp.9, 2015, https://doi.org/10.5322/JESI.2015.24.9.1171