Relação entre temperatura de superfície terrestre, índices espectrais e classes de cobertura da terra no município de Goiânia (GO)
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Data
2012
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Resumo
Starting from the concept of urban landscape heterogeneity, it is expected that different landscapes have different thermal behaviors, since each city space has particularities regarding the types and intensities of land use and cover. This study, having as the study area the city of Goiânia, capital of the state of Goias, seeks to analyze the relationship of the various types of use and intensity of urbanization with the superficial thermal behavior, and its correlation with spectral indices (SAVI and NDBI) using for that data from the ETM + sensor aboard the Landsat 7 satellite. Random samplings were performed and it was used a high resolution image of the Quickbird satellite as reference. NDBI and land surface temperature showed good correlation (r ² = 0.74). Areas with land cover of exposed soil, such as planting areas, burned areas and neighborhoods without asphalt coverage recorded high temperatures (greater than 38 ºC). The warm temperatures recorded (<23 and 30 ºC) corresponded to areas of dense vegetation, such as gallery forests, the Botanical Garden and the State Park Altamiro de Moura Pacheco, recording a difference of up to 8 ºC in relation to anthropic areas.
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Land surface temperature, Urban areas, Remote sensing, ETM+ sensor, Temperatura de superfície terrestre, Áreas urbanas, Sensoriamento remoto, Sensor ETM+
Citação
SOUSA, Silvio Braz de; FERREIRA, Laerte G. Relação entre temperatura de superfície terrestre, índices espectrais e classes de cobertura da terra no município de Goiânia (GO). RA'E GA: o espaço geográfico em análise, Curitiba, v. 26, p. 75-99, 2012.