Mobil Ölçümlerle Ankara Şehir Isı Adası

Abstract

As Ankara is morphologically situated in a basin, this causes air conditions of poor quality for the city-dwellers, and such adverse conditions are further increased sometimes with the impact of urban heat island (UHI). In this study, mobile measurements were made for 12 months (1 at daytime and 1 at nocturnally) to determine the characteristics of UHI in Ankara, and the results were assessed and analyzed using statistical methods. Based on the assessments, the northern cliff of the city is formed at Yukseltepe intersection and the southern cliff is formed at Turan Gunes Street. There are also two different peaks in Ulus and Kizilay, and the plateau of the urban is between the cliffs and peaks. The plateau of the urban includes a temperature sinks and hills, which is caused by the land use in the urban, heavy traffic and characteristics of urban structure. UHI formed in the urban becomes more apparent in the summer season (in the arid period) and is decreased by 0.2 °C during the day and 0.4 °C at night as the temperatures go far away from the city center. The temperatures drop in the sites where visibility of sky is increased. The elevation is effective in the temperature distribution, this is especially effective in the high pressure conditions.