Fidelia Anninda Fabiolani
Universitas Sam Ratulangi

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GEOAI-BASED SPATIOTEMPORAL ASSESSMENT OF SURFACE URBAN HEAT ISLAND DYNAMICS AND LAND COVER CHANGE USING GOOGLE EARTH ENGINE: EVIDENCE FROM MANADO CITY, INDONESIA Fidelia Anninda Fabiolani; Winsy Weku; Eric Alfonsius
SOSIOEDUKASI Vol 15 No 3 (2026): SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan Universaitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/sosioedukasi.v15i3.9248

Abstract

Rapid urbanization has significantly transformed land cover patterns and intensified the Surface Urban Heat Island (SUHI) phenomenon in many tropical cities, posing increasing environmental and public health challenges. However, comprehensive long-term assessments integrating land cover dynamics, land surface temperature (LST), and SUHI using cloud-based geospatial platforms remain limited, particularly in rapidly developing cities of eastern Indonesia. This study investigates the spatiotemporal relationship between land cover change and SUHI dynamics in Manado City, Indonesia, between 2000 and 2023 by integrating Landsat imagery, Google Earth Engine (GEE), and a GeoAI-based Random Forest classification approach. Landsat 7 ETM+ and Landsat 9 OLI/TIRS datasets were processed to generate land cover maps and retrieve LST, while SUHI intensity was derived from spatial thermal anomalies. Classification accuracy was evaluated using confusion matrices, achieving Overall Accuracy of 95.28% (Kappa = 0.915) for 2000 and 92.00% (Kappa = 0.870) for 2023. Results reveal a substantial decline in vegetation from 10.844,523 ha (75,69%) to 9.724,045 ha (67,87%), accompanied by an expansion of built-up land from 3.374,629 ha (23,55%)  to 3.939,957 ha (27,49%). These land cover transformations corresponded with an increase in average LST from 33.79°C to 37.08°C and a spatial expansion of high-intensity SUHI zones from the urban core toward developing suburban districts. Subdistrict-level analysis further shows considerable spatial heterogeneity in thermal conditions, with the greatest warming occurring in the most intensively developed areas. The results confirm that urban expansion and vegetation loss are the principal drivers of increasing SUHI intensity in Manado, supporting climate-responsive urban planning and sustainable land-use management