Modelagem e identificação de ilhas de calor em Ubá - MG

Abstract

The urban climate appears as an environmental variable that gains importance as it seeks to build a more pleasant and healthy environment for city dwellers. The city of Ubá, like most Brazilian cities, experienced intense urban growth, which brought environmental consequences. The present work through the modeling seeks to integrate several important environmental variables for the urban air heating creating a representation that contributes to a better understanding of the relationship between the atmospheric dynamics, the natural forms and the use and occupation inside the city that conform its urban climate. The methodological procedures in this work include mapping the physical characteristics and urbanization required for modeling the potential of urban thermal fields. Remote sensing in order to identify areas of greater surface heating. Modeling of representative points of micro urban climates. Empirical work with record of air temperatures. Identification and measurement of atmospheric heat islands through the thermal behavior of the analyzed points. Validation of the proposed model through correlation with the empirical data. The heating potential model proved to be a powerful tool in representing thermal fields within the city. The recorded data verified that in Ubá, under the influence of the Atlantic Tropical Mass, we have the formation of an island of night heat of strong intensity, up to 8.4 ° C. The modeling developed has the purpose of subsidizing the urban planning and management by the public power in order to mitigate and minimize the environmental problems resulting from urbanization in the quest for a higher quality of life for the urban population.