[M-ZZ49] Earth Systems of the Anthropocene: Natural, Urban and Social Environments

[MZZ49-P02] Urban heat island in Global South

*saihata mako¹, Masahiro Ishikawa¹ (1.Yokohama national university)

With the expansion of economic activity, the demand for labor is increasing in the urban areas of the Global South. Against this background, Global South has led to rapid population concentration in urban areas and urban expansion. Urbanization causes a decrease in vegetation and surface permeability, changes in albedo, etc. These changes in the surface environment cause the urban heat island. An assessment of the urban thermal environment is essential because the expansion of urbanization increases the intensity of the heat island. To evaluate the thermal environment in the city from satellite remote sensing, we quantified the effect of urbanization and vegetation on the surface temperature. This study estimated NDVI (normalized difference vegetation index) using Sentinel-2 satellite image data and surface temperature using Landsat-8 satellite image data. By spatially combining these two types of data, we investigated the relationship between the state of vegetation and the surface temperature. Saihata & Ishikawa (2022, JpGU2022) showed the thermal environment of Washington, D.C., the capital of the United States, but this paper will evaluate the impact of urbanization on the thermal environment of expanding cities in the Global South.