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Surface temperature analysis of conventional roof and different use forms of the green roof

Baryła Anna, Karczmarczyk Agnieszka, Bus Agnieszka, Witkowska-Dobrev Joanna

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

2019

Vol. 28, No. 4

632--640

Increasing urban populations raises a number of problems and risks that are strengthened by observed and projected climate change. An increase in green areas (so-called green infrastructure) has turned out to be an effective means of lowering temperature in the city. Green roofs can be one of the possible measures leading to achieving this aim. The aim of the study was the analysis of temperature changes of different roof surfaces (conventional roof, board, intensive roof substrate without plant cover, substrate covered with plants (shrubs). Studies on comparing the temperature between a conventional roof and green roofs were carried out in the period from April to September 2015 on the roof of the building of the Faculty of Modern Languages, University of Warsaw. The measurement was performed using the FLIR SC620 thermal imaging system. As a result of the tests, it was found that in the summer months the differences between the temperature of the green roof and the conventional roof amounted to a maximum of 31.3°C. The obtained results showed that the roof with vegetation can significantly contribute to the mitigation of the urban heat island phenomenon in urban areas during summer periods.