H. Tjahjono, R.I. Maulana, A. Aji, W.A.B.N. Sidiq, M. Miftahurridlo
This study investigates the condition of air pollutants and land surface temperature (LST) on land cover in Semarang City in 2023 and their correlations. Semarang City, as a metropolitan city with a dense population, faces challenges such as dominant built-up land cover, high concentrations of pollutants CO and NO2, and variations in land surface temperature. The research utilized a spatial and quantitative approach with guided land cover data classification, Sentinel-5P images for air pollutant data (CO and NO2) interpretation, and a single-channel algorithm for obtaining LST data from Landsat 8 images. The findings reveal that vegetation (44%) and built-up land cover (43%) dominate Semarang City, and the highest pollutant concentrations are found in various land cover types. The average LST in Semarang City is 41.53°C, with the highest temperature recorded in built-up areas (44.62°C) and the lowest in water bodies (39.61°C). Pearson correlation analysis indicates a significant positive relationship between CO and NO2 with LST. This research provides a spatial understanding of air pollutants and land surface temperature conditions in Semarang City in 2023 and its contribution to identifying the factors influencing these phenomena. © 2024 Institute of Physics Publishing. All rights reserved.
Department of Geography, Universitas Negeri Semarang, Semarang, Indonesia; Department of Geography, Universitas Gadjah Mada, Yogyakarta, Indonesia
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