The dynamics of cities have been changing a lot over time. Population growth and increasing urbanization are examples of this. It is noticeable that natural landscapes are changing into artificial landscapes, replacing green areas by completely asphalted ones. These population dynamics directly interfere with the urban climate, modifying it. One of the phenomena caused by the intense urbanization is the Urban Heat Islands (UHI) that happen in the cities, regardless of their size and location. Therefore, this study aimed to evaluate the land surface temperature (LST) in the effects of UHI in the backlands of Pernambuco, located in northeastern Brazil, using remote sensing techniques. For this, the method used consists of a spatial and temporal analysis of the land surface temperature, for which measuring the orbital data of Landsat satellites 5 and 8 were used. The temporal analysis was performed in 10-year gaps (1985, 1995, 2005 and 2016), and the climatic period of data acquisition was the dry period. The results show that, for this study area, LST increased from 1985 until 2016; in 1985 the lowest measured temperature was <25 °C and the lowest temperature in 2016 was around 25-30 °C. The UHI effect is evidenced when comparing data obtained from the surface temperature of urban areas with surface temperature data of green spaces, from which a difference of just over 6 °C is noticeable.


Remote Sensing, Surface Temperature, Orbital Images.

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