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O estudo tem como objetivo principal estimar os fluxos de energia a superficie e analisar a evolucao das possiveis ilhas de calor urbano na regiao metropolitana de Manaus-AM, comparando o ano 1990 e 2011 e relacionando a retirada da cobertura vegetal com a intensidade desse fenomeno, utilizando tecnicas de sensoriamento remoto. Para a realizacao deste estudo foram utilizadas imagens do satelite Landsat 5-TM, dados meteorologicos oriundos do INMET e aplicado o algoritmo SEBAL para obtencao dos componentes do balanco de energia a superficie. Observou-se que o sensoriamento remoto se apresenta como ferramenta promissora no estudo da dinâmica das cidades, assim como, dos efeitos da expansao urbana nos fluxos de energia entre a superficie e a atmosfera e, que a substituicao de superficies vegetadas por materiais utilizados nas areas urbanas resultam em reducao da energia utilizada no processo de evaporacao e aumento da energia para aquecimento do ar e do solo, ocasionando aumento das temperaturas. Abstract The main objective of this study was to estimate the surface energy fluxes and to analyze the evolution of the possible rban heat islands in the metropolitan area of Manaus-AM, comparing the years 1990 and 2011 and relating the retreat of the vegetable covering with the intensity of that phenomenon by using remote sensing techniques. This study used images from Landsat 5-TM satellite, as well as, meteorological data originated from INMET and applied the algorithm SEBAL for obtaining of the components of the energy balance. The remote sensing technique is a promising tool in the study of the dynamics of the cities, as well as, of the effects of the urban expansion in the energy fluxes between the surface and the atmosphere. The change of vegetated surfaces by materials used in the urban areas results in a reduction of the energy used in the evaporative process and increase the energy for heating of air and soil, causing increase of the temperatures.

Análise dos Efeitos da Expansão Urbana de Manaus-AM Sobre Parâmetros Ambientais Através de Imagens de Satélite