Temporal analysis of heat islands using satellite image processing: case study Rio Branco, Acre

Authors

DOI:

https://doi.org/10.5335/rbca.v15i1.14098

Keywords:

Heat islands, Landsat, vegetation index, remote sensing, surface temperature

Abstract

Heat islands is a phenomenon that occurs in cities, causing a considerable increase in the temperature of the region in relation to its neighboring regions. In this article, a temporal analysis of the land surface temperature, known as LST(Land Surface Temperature), and the normalized difference vegetation index, NDVI (Normalized Difference Vegetation Index) in the emergence of heat islands was performed using digital image processing in the city of Rio Branco, capital of the state of Acre, from 2000 to 2020. Digital images generated by the Landsat-5 and Landsat-8 satellite were used. The steps present in the SEBAL model (Surface Energy Balance Algorithms for Land) were applied to process the images, obtain the temperature and the vegetation index. The results found show an increase in the average temperature of the surface of about 14.97\%, mainly due to the reduction of green areas, disorderly urban growth, presence of soil impermeability due to asphalt coating, factors that contribute to the emergence of Urban Heat Islands.

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Published

2023-04-25

Issue

Section

Original Paper

How to Cite

[1]
2023. Temporal analysis of heat islands using satellite image processing: case study Rio Branco, Acre. Brazilian Journal of Applied Computing. 15, 1 (Apr. 2023), 70–78. DOI:https://doi.org/10.5335/rbca.v15i1.14098.