GEOTECHNOLOGIES APPLIED TO THE BEHAVIORAL STUDY OF URBAN HEAT ISLANDS

GEOTECNOLOGIAS APLICADAS AO ESTUDO COMPORTAMENTAL DAS ILHAS DE CALOR URBANAS

GEOTECNOLOGÍAS APLICADAS AL ESTUDIO DEL COMPORTAMIENTO DE LAS ISLAS DE CALOR URBANO

Abstract

Many cities are impacted by the effect of heat islands. In this context, the aim of this study was to analyze the spatial and temporal distribution of urban heat islands and the influence of green areas on the formation of urban microclimates in the city of Rio de Janeiro. As a result, it was observed that Rio de Janeiro city is under heat islands influence, in which the oldest and most urbanized areas of the city are the most affected by high temperatures. It was possible to verify the role of vegetation in the formation of urban microclimates through the negative correlation coefficient between surface temperature (Ts) and vegetation indexes (NDVI and EVI), along with the positive correlation coefficient between surface temperature (Ts) and the Index of Areas Built by Normalized Difference (NDBI), what demonstrates the influence of urbanization on the increase of temperature.

Keywords:
Heat Island; city; Rio de Janeiro