Os efeitos da intensificação dos processos de urbanização no balanço energético local: estudo de caso no Pólo da Asprela

Abstract

Face to the substantive change happened in the last decades, in the area of the parish of Paranhos (Porto) namely, in what it respects to the type and density of occupation of the soil, above all after the enlargement of the Pole 2 of the University of Porto with the construction of the new buildings of several universities, we intended to evaluate the impacts generated in the thermal balance, trying to identify the existence of thermal anomalies. For the prosecution of our goal we used as methodology the acquisition of information through the execution of itinerant measurements of temperature along a pré-established itinerary. We concluded that exists an urban heat island with a considerable magnitude in the area of the oldest streets and with more movement of road traffic. However, face to the geometry of the buildings of the Pole of Asprela and involving area, characterized by enormous open spaces and great distances among the buildings, excellent wind conditions are generated that they dilute and/or they inhibit the storage of energy in the canopy layer and they hinder the maintenance of the pollutants in the low atmosphere and they lessen rather much the magnitude of the urban heat island phenomenon.