Characterization of Roofing Materials in Mendoza-Argentina Metropolitan Area, by use of Spaceborne Remote Sensing.

NOELIA ALCHAPAR; ERICA N. CORREA; M. FLORENCIA COLLI

Hyderabad

Conferencia; 5th International Conference on Countermeasures to Urban Heat Islands (IC2UHI); 2019

International Institute of Information Technology

Diverse researches have demonstrated that the application of cool materials offers good possibilities to controlling urban warming. Considering that roofs cover around 22% of city surfaces, the extensive application of cool roofs could be a strategy to energy saving, diminish the heat island and the urban temperatures, and contribute to mitigate the climate change on a global scale. Therefore, the scope of this research is to design a procedure that allows discriminating the different roofing materials of the surfaces of the urban envelope of Mendoza Metropolitan Area, Argentina (AAM), the final goal is to determine the benefits in terms of energy consumption and microclimate, produced by the increase of albedo in the roofs of the city. The methodology is based in following sections: 1-Using satellite techniques calculate the surfaces and distribution of roofing materials of the AMM; 2-Under laboratory conditions, locally used roofing materials were tested, with the aim of albedo and aging; 3- Microclimatic modeling of a neighborhood, to determine the potential of increasing roof albedo over surface temperatures. The results show that the materials predominantly used in roofs of the city are membranes (74%), zinc sheets (14%) and traditional tiles 13%). Besides, this work showed that raising the albedo level of 10% represents an increase of 2ºC of roof surface temperature. This knowledge constitutes an important tool to quantify the energetic and environmental effects derived from to regulate the albedo values in the urban roofs.