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- Title
Urban Heat Islands - Reduktion von innerstädtischen Wärmeinseln durch Whitetopping.
- Authors
Krispel, Stefan; Peyerl, Martin; Maier, Gerald; Weihs, Philipp
- Abstract
Reduction of Urban Heat Islands with Whitetopping. The requirements for traffic areas in the urban zone are manifold and continuously increasing. The reduction of the heat islands, which adversely affect the urban climate due to their increased temperature, is of importance for the residents. An investigation revealed that light-coloured traffic areas can significantly reduce the surface temperature and overall temperature levels in urban areas (illustrated by the example of Vienna) and improve the visibility of traffic participants at unchanged illumination levels at night. As a rehabilitation measure the Whitetopping method is simple and cost-efficient for improving the load bearing capacity and brightness characteristics of urban traffic zones. Replacing asphalt roads with roads with a concrete topping, such as Whitetopping, with an albedo of 0.5 would lead to a daily air temperature reduction of approximately 1 °C in summer. The model simulations of the air temperature over a 150 m × 150 m homogeneous area with Whitetopping also show a decrease in temperature by 1 °C compared to asphalt. Since roads are representing 10 % of the total area of a city, efficient and long- term measures to improve the micro-climate and facilitate a further increase in traffic safety can be taken.
- Publication
Bauphysik, 2017, Vol 39, Issue 1, p33
- ISSN
0171-5445
- Publication type
Article
- DOI
10.1002/bapi.201710002