Intra-urban nocturnal temperature differences: a multivariate approach

Abstract

The possibility of predicting nocturnal intra-urban air temperature differences on the basis of meteorological data from climatic stations was analysed. Three years of r eco rd~ng at an urban canyon and a nearby open area in the city of Goteborg, Sweden, formed the basis of the analyses. The urban canyon-urban open area temperature differences (AT,.,) were best estimated when the data was first classified with reference to the amount of cloud cover and then fitted to a non-linear regression equation which included the wlnd speed at the urban open area (10 m level) The study shows that the degree of intra-urban temperature vanations can be predicted using a fairly simple methodology. The methodology and the general pattern of the model could be helpful as a complementary tool in urban land use planning for cities with a structure similar to Goteborg K E Y WORDSCity climate . Urban canyon . Air tempera ture . Street geometry Applled climatology Urban planmng