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Diurnal Surface Urban Heat Island Effect in Catalonia: Land Surface Temperature Analysis from Landsat Data

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Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutors: Maria del Carmen Llasat Botija, Joan Gilabert Mestre

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This study analyzes the Diurnal Surface Urban Heat Island (DSUHI) across four Catalan cities (Barcelona, Girona, Tarragona, and Lleida) from 2020 to 2024. A workflow combining QGIS and R is used to process Landsat 8/9 imagery, calculating Land Surface Temperature (LST) to estimate urban-rural thermal differentials. The main contribution is a reproducible methodology for DSUHI analysis, which also compares LST results derived from Landsat Level-1 and Level-2 data.
Findings highlight key differences in DSUHI characteristics among the cities and the implications of using different data processing levels.

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Diurnal Surface Urban Heat Island Effect in Catalonia: Land Surface Temperature Analysis from Landsat Data