Urban Heat Islands increase surface temperatures which impact the health and well-being
of urban populations. Radiative forcing is impacted by changes to the land surface associated
with urbanization that are particularly significant immediately after sunset. This paper aimed to
analyze the behavior of UHI in different Local Climate Zones (LCZ) in Bragança city (Portugal),
using Air Temperature (Ta), satellite images (Landsat 8), and on-site data. The methodology included
a seasonal approach, integrating data with different scales (spatial, radiometric, and spectral) and
qualitative and quantitative analyses. Google Earth Engine (GEE) optimized the processing time and
computation requirement to generate the Land Surface Temperature (LST) maps. The integration of
data with different scales corroborated the complementation of information/analysis and detected
the correlation between the Ta and LST. However, the identification of the UHI was compromised
due to the time of the passage of Landsat 8, and it was identified as the Urban Cool Island (UCI), a
complementary effect of UHI, supporting the results of previous studies and for the use of Remote
Sensing (RS) for thermal effects analysis.
