Leonardo Sousa dos Santos

IMAGEM ORBITAL NA IDENTIFICAÇÃO DE RESPOSTAS TÉRMICAS COM DIFERENTES PADRÕES DE USO E COBERTURA NO MUNICÍPIO DE MOJUÍ DOS CAMPOS, PARÁ

The infrared thermal remote sensing data provides measurements of surface energy fluxes, such as the Land Surface Temperature (LST). The aim of this study was to analyze thermal responses orbital thermal infrared sensor in different patterns of use and coverage in the city Mojuí dos Campos, State of Pará. To assess and evaluate the data of Land Surface Temperature (LST) the softwares used was PCI Geomatics 2015, QGIS 2.8 and images of the Thermal Infrared sensor (TIRS) aboard the Landsat-8 satellite. For the analysis of LST were extracted the LST values of 6000 random points as well as 62077, corresponding to the centroid of information plan of use and land cover in the study area. The results showed higher spatial variability of LST due to the heterogeneity of land use occurring in the areas of annual crops and pasture, with 6.2°C and 7.3oC above their average 3 3.2oC and 31.1oC, respectively. The forest showed different behavior, with temperatures ranging from 28.3°C (minimum) to 39.9°C (maximum). After compare the ty pes of land use and cover and the tracks of milder temperatures, it is observed that there is a reduction of LST due to the presence of continuous forest areas, especially southwest of the area in question. We conclude that on the area in question the maintenance of forest cover reduces the thermal amplitudes. Moreover, on large areas with annual pasture and agriculture there are larger spatial variations of LST.