Ankara’da termal konfor koşulların eğilimi ve şehirleşmenin termal konfor koşulları üzerine etkisi

Abstract

In this study two meteorology stations which is very close (26.3 km) but have different land use and pattern have been compared by the thermal perceptions (physiologically equivalent temperature, PET) that have been calculated from the meteorological parameters which has been recorded at 7,14 and 21 hours between 1975 and 2013. Ankara (urban) has warmer and more comfortable conditions than Esenboğa (rural) from October to March. Over the summer (April to September), though, heat stress is more frequent and stronger. While the differences between urban and rural areas decrease at times when solar radiation falls, they increase when the radiation also increases. The PET values of two stations have also been analyzed for the changes over the time during period between 1975 and 2013 by the Pearson correlation analyses. PET values of both areas seem to have a significant tendency for increase between 1975and 2013. This upward trend in thermal perceptions is more obvious in Ankara before 1996 and in Esenboğa after 1996. The highest correlation coefficients appear in 21.00 PET values in Ankara and Esenboğa. The structure, texture, geometry and atmospheric characteristics of urban areas cause them to warm and cool later than the rural regions. The trend for increase in 21.00 PET values is evidence for the effects of urbanization

Keywords

• bioclimatological conditions
• thermal comfort
• physiologically equivalent temperature
• land use pattern
• urbanization impact