Ilha de calor
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Anais XIV Simpósio Brasileiro de Sensoriamento Remoto, Natal, Brasil, 25-30 abril 2009, INPE, p. 647-653.
Identificação de ilhas de calor na área urbana de Ilha Solteira-SP através da utilização de geotecnologias
Douglas Fernandes da Costa1 Leonardo de Faria Peres2 Helio Ricardo Silva1
1
Universidade Estadual Paulista – UNESP/FEIS Caixa Postal 31 - 15385-000 – Ilha Solteira - SP, Brasil douglas_c@uol.com.br
2
Instituto Nacional de Pesquisas Espaciais – CPTEC/INPE leonardo.peres@cptec.inpe.br Universidade Estadual Paulista – UNESP/FEIS Caixa Postal 31 - 15385-000 – Ilha Solteira - SP, Brasil hrsilva@agr.feis.unesp.br
1
Abstract. With climate change expected in the coming decades, scientists suggest that one of the consequences is the increase in average temperatures and also the increasing number of hot days, which will increase the thermal discomfort in the population. Therefore this study aimed to identify the main thermal variations located in the urban area of the Ilha Solteira-SP. The methodology employed was the implementation of an algorithm using the module LEGAL of geographic information system SPRING 4.3, which carried out the transformation of the levels of ash generated by the satellite in values of surface temperature. The results showed the presence of variations in surface temperatures in the different regions of the municipality. The areas that have higher amount of vegetation such as forest area of the zoo and the area of recreation, had surface temperatures of between 21 C and 23 C. The areas that showed higher temperatures (41 C to 44 C) are located in regions where they occur the largest percentages of classes buildings and paved-building, thus characterizing the phenomenon of heat islands. These results could be used to subsidize urban planning strategies to minimize the effects of thermal discomfort of the areas identified as heat islands. Palavras-chave: sensoriamento remoto, Landsat-5, infravermelho