Investigação de Ilhas de Calor em Brasília: Análise Multitemporal com Enfoque na Cobertura do Solo (Investigation of Heat Islands in Brasilia: Multi-Temporal Analysis with Focus on Land Cover)
DOI:
https://doi.org/10.26848/rbgf.v7.6.p1044-1054Keywords:
Ilhas de Calor, Sensor Termal, Brasília, Uso do Solo.Abstract
As questões relacionadas com o clima urbano tem se intensificado a partir da crescente urbanização imposta pelo sistema de desenvolvimento vigente. Um dos problemas gerados são as Ilhas de Calor, um aquecimento da superfície que tende a se formar em centros de cidades onde há intensa urbanização, sendo que a cidade de Brasília possuí as características básicas para a formação das mesmas. Para detectar a formação das ilhas de calor em Brasília foram utilizadas quatro imagens termais do satélite Landsat – 5, de 1987 á 2011. A partir da análise dos mapas de temperatura superficial foi possível perceber o constante aumento das temperaturas e abrangência das ilhas de calor em Brasília, fato este influenciado pela expansão urbana e intensificação do uso urbano, outro grande foco de calor foram as áreas de solo exposto que se apresentaram em certos casos com temperaturas maiores até mesmo que o centro da cidade, percebe-se portanto a necessidade de uma melhor gestão e planejamento das áreas urbanas para minimizar os impactos climáticos que tendem a se tornar cada vez mais significativos.
A B S T R A C T
Issues related to urban climate has intensified from increasing urbanization imposed by the current development system. One of the problems generated are the heat islands, a warming of the surface that tends to form in city centers where there is intense urbanization, and the city of Brasilia possess the basic characteristics for forming the same. To detect the formation of heat islands in Brasilia the research used four thermal images of Landsat - 5, 1987 to 2011. Based on the analysis of the maps of temperature was possible to perceive the rising temperatures and breadth of heat islands in Brasilia, this fact influenced by urban expansion and intensification of urban use, another major focus of heat were the areas of exposed soil that performed in some cases with even higher temperatures than the city center, so realizes the need for better management and planning of urban areas to minimize climate impacts that are likely to become increasingly significant.
Keywords: Heat Islands; Thermal Sensor; Brasília; Land Use;
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Copyright (c) 2015 Nickolas Castro Santana

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