Evaluation of Surface Temperatures of The Urban Open Public Areas in Ataşehir District
61st ISOCARP World Planning Congress, Ar Riyad, Suudi Arabistan, 10 - 11 Kasım 2025, (Yayınlanmadı)
- Yayın Türü: Bildiri / Yayınlanmadı
- Basıldığı Şehir: Ar Riyad
- Basıldığı Ülke: Suudi Arabistan
- Maltepe Üniversitesi Adresli: Evet
Özet
In a climate changing world extreme heat waves and drought causing severe vulnerabilities in cities have become essential issues to be held strategically in local level for improving the thermal comfort and health of the society in urban areas. In order for cities to become resilient to such climatic impacts and also urban heat island effect caused by urbanisation which increases the threats caused by climate change especially heat waves and drought, comprehensive studies are tried to be carried out at different spatial scales. Based on this, considering local scale, open public areas such as pavements, roads, parks, sport areas etc. and the materials used in these functions have crucial importance in increasing or regulating urban heat island effect. In this study an urban axis in Ataşehir Municipal District in Istanbul, where both pedestrian and vehicle circulation are intense and consists of urban open public areas such as parks, sport areas, pedestrian axes and roads is chosen. This axis is important due to its supportive and connective role for the functions around like Istanbul Finance Center, Ataşehir Municipality complex, schools, shopping and leisure center (WaterGarden Mall), housing areas including middle-high income to low income and high ways. The study area is mapped by using ARC GIS PRO according to the functions of the urban open public area (parks, sport areas, pedestrian axes and roads) together with the materials used including their surface temperatures measured in situ in June 15th 2025 between 13.00-14.00 hours. On the day of measurement, when the air temperature was 30.3 °C, the results of the measurements done for the surface temperature on the pedestrian surface ranged between 40.5 °C and 53.5 °C. Due to this result, most zones along the main pedestrian axis have high surface temperatures which may cause uncomfortable thermal conditions for people. However, measurements taken under different tree shadows under the same conditions showed values even lower than the current air temperature (30.3 °C). The lowest temperature value recorded under tree shadows was 23.5 °C. This may prove that even the shade of a single tree can be effective in increasing thermal comfort and reducing heat island effect. Based on these findings, the spatial relationship between the urban open public areas, materials used on the surface of this area and the impact of green canopies are tried to be addressed by measuring the surface temperatures and mapping the variety of the temperatures in relation with the materials and green canopies. Upon the outcomes of the evaluation of spatial analyses, the hotspot areas which increase the urban heat island effect and decreases the thermal comfort for the pedestrians are aimed to be defined in this study. Focusing possible urban design solutions for these defined hot-spot areas, enhancing thermal comfort through local-scale in order to increase the thermal comfort by nature-based solutions and alternative material selections are tried to be discussed. The scale of the study tends to emphasize the importance of the urban design including thermal comfort for adapting and mitigating climate change meanwhile decreasing the urban heat island effect. These discussions can make contribution to a climate-friendly planning- design perspective and suggest a simple approach in order to take thermal comfort issue in to consideration for the urban design of the urban open public spaces in local level.