Track 3: Conservation of modern and post-modern heritage
APT Student Scholar Abstract and Application
Large-scale urban development is producing urban climate change in large cities, creating climatic anomalies such as urban heat island. Especially in Brasilia with 2.570.160 inhabitants, which currently is the largest city in the world that did not exist at the beginning of the 20th century. The capital city of Brazil was inaugurated in 1960 and became a landmark in the history of urban planning. Its pilot plan is an Unesco World Heritage site designed by Lucio Costa based on principles of modernist movement. In this study, computer tools were implemented to deal with the complexities of urban climate to assess the environmental vulnerabilities of the study area: the monumental axe, which concentrates the most important administrative activities and some Oscar Niemeyer´s buildings resulting in a monumental landscape. A macro evaluation supported by satellite imagery Landsat 8 (thermal band) and the software ArcGIS 10.3 was conducted for detection of surface temperature variation of urban area. Next, for a closer view, two palaces and their surroundings were selected: the Palace of the Planalto and the Palace of Justice. Microclimate simulation was conducted with the ENVI-MET 4, developed for the analysis of urban microclimates from three-dimensional holistic modeling. This tool was selected because of its potential of modeling the urban microclimate considering building geometry, vegetation, urban materials and high-resolution outputs. Subsequently, the ENVI-MET simulations generated micro-scale climatic maps showing air temperature, relative humidity and wind speed. The result shows that microclimatic simulation is a very useful tool for predicting microclimate conditions and could be used for architectural intervention scenarios in order to contribute in developing guide-lines for open public spaces. In addition, the use of satellites thermal images for detection of surface temperature of urban area, combined with high spatial resolution images, can contribute to urban planning in terms of understanding the environmental urban development and its relation with the urban land uses.