Human thermal comfort in summer within an urban street canyon in Central Europe

摘要: Regional climate models predict an intensification of extreme heat waves in Central Europe. Against this background, the significance human-biometeorologically orientated urban planning strategies is increasing by which impairment thermal comfort for people cities future can be minimised. Such require quantitative information on factors determining human within different quarters. With respect to these problems, joint research project KLIMES funded German Federal Ministry Education and Research was initiated. Its methodical approaches objectives are presented article. One part experimental investigations street canyons, whose variable arrangement generally characterises The conducted Freiburg (SW Germany). design concept analyse measured data related exemplarily explained based "Rieselfeld" quarter a typical summer day 2007. internationally well-known physiologically equivalent temperature PET used as index quantify perception conditions collective cities. During weather Europe, strongly influenced radiation heat, parameterised mean radiant T mrt. Therefore, short- long-wave flux densities from three-dimensional surroundings standardised standing person representing properties analysed detail. For specific at stationary site (NW-SE oriented canyon, H/W = 0.49, SVF 0.51, SW sidewalk), contribution total density absorbed mrt increased during about 70% morning 90% evening before sunset.