Smart cities sustainability: procedures for the evaluation of localized urban heat island phenomena and mitigation techniques.
The urban air quality is related to the wide-open spaces presence. Cities discomfort is due to air overheating and pollutions. These are connected to urban density, building geometrical and thermal characteristics, asphalt proprieties, lack of vegetation, and others.
Urbanizations has led to an increase of air temperature, that means an increase of Urban Heat Island phenomena (UHI). Its basic definition is the increase in temperature of urban areas in comparison to its rural surroundings.
In the mesoscale, UHI phenomena is due to the alternation of green and urban zones. In the microscale, UHI phenomena is due to many other features: low sky view factors, buildings barrier for natural ventilation, lack of vegetation that results in low evapotranspiration, presents of low reflectance materials, anthropic activities and reduction of permeable areas.
The aim of my research is to find a correlation between air temperature and the microscale parameters of urban areas, examining also the urban heat island countermeasures. In this way, I want to find procedures in order to requalificate the existing urban area and to design new cool building complex. For this purpose, there is the need to identify a replicable energetic model for the evaluation of localized urban heat island phenomena and mitigation techniques of a generic urban area.