STRATEGIES FOR THE MITIGATION OF URBAN HEAT ISLANDS IN RESIDENTIAL AREAS OF DESERT CITIES. THE CASE OF AREQUIPA -PERU

Zeballos-Velarde C. · ZEMCH International Conference (2022)

Resumen

The effect of urban heat islands (UHI) affects the comfort conditions of residential areas and the health of their inhabitants. In cities located in dese11 areas, the particular physical conditions of the territory differently affect the generation and intensity of the urban heat islands effect Understanding the different microclimatic characteristics is important to propose suitable architectural solutions for each case, in order to mitigate high urban temperatures. This research is carried out in Arequipa, Peru, a city with a desert climate that has one of the highest solar radiations in the world and where studies of UHi and residential areas have not been previously conducted. The paper has three objectives: the fust is the location of the urban heat islands. For this purpose, satellite remote sensing is employed to identify hotspots in the metropolitan area that suffer this effect. Subsequently, airborne temperature measurements and high-resolution thermographic imagery were collected using an unmanned aerial vehicle (UAV ) in four typical areas where housing of different density interacts with vegetated and non-vegetated environments, in order to identify particular physical, thermal and spectral information for a more accurate microclimatic analysis of a variety of residential areas in Arequipa. The third objective is to identify specific situations at an architectural level and to propose concrete heat mitigation strategies and green infrastructure that can be carried out to benefit microclimate conditions in residential areas. It is expected that the methodological framework and results of this research can be equally replicated in other cities of Peru and South America that suffer from the negative effects of climate change and urban heat islands. © ZEMCH Network.

Instituciones: Universidad Católica San Pablo