Identificação de ilhas de calor na área urbana de ilha Solteira - SP através da utilização de geotecnologias
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Data
2010-09-01
Autores
Da Costa, Douglas F. [UNESP]
Silva, Hélio R. [UNESP]
De Peres, Leonardo F.
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Resumo
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 enhance the thermal discomfort in the population. Therefore, this study aimed to identify the main thermal variations in the urban area of Ilha Solteira-SP, Brazil. The methodology involved the transformation of Landsat TM data into values of surface temperature and their comparison to distinct urban land use. 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 the forest area of the zoo and the recreation area, showed surface temperatures between 21 °C and 23 °C. The areas that showed higher temperatures (41 °C to 44 °C) were located in the regions in which occur the largest percentages of classes buildings and paved-building, thus characterizing the phenomenon of heat islands. These results could be used to support urban planning strategies to minimize the effects of thermal discomfort of the areas identified as heat islands.
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Palavras-chave
Atmospheric correction, Landsat-5, Remote sensing, Thermal discomfort, Thermal infrared
Como citar
Engenharia Agricola, v. 30, n. 5, p. 974-985, 2010.