Analysis of thermal comfort in urban area using Remote Sensing and Geographic Information System

Abstract

The rapid development of the city of Yogyakarta has resulted in the conversion of land functions from built-up land to undeveloped areas such as residential areas, office areas, and industrial areas. This land-use change is predicted to impact changes in weather and climate in most of the cities of Yogyakarta and cause the Urban Heat Island (UHI) phenomenon. Urban Heat Island will have implications for thermal comfort which can affect the productivity of community activities. This study aims to determine the correlation between UHI and the level of thermal comfort of settlements in Yogyakarta. This research was conducted to determine the level of thermal comfort in the city of Yogyakarta using remote sensing and GIS approaches. Comfort classification was obtained from the THI analysis and analyzed the correlation between THI and UHI. The UHI variable is used to calculate the Temperature Humidity Index (THI). The results of the quantitative analysis showed that Yogyakarta City UHI had a strong positive correlation (r2= 0.93) with the level of THI and a weak negative correlation with RH (r2= 0,52). T The increase in the level of UHI shows that the humidity and thermal comfort of the city of Yogyakarta is decreasing. The results of the qualitative analysis of the study also show that more than 95% of the people feel comfortable with the thermal conditions in which they live.