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Evaluating the cooling potential of urban green spaces to tackle urban climate change in Lisbon
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Resumo(s)
The increase and optimization of urban vegetation has been considered an e ective
mitigation measure of an urban heat island (UHI), with positive e ects on human thermal comfort.
In this study, the cooling potential of all green spaces in Lisbon was estimated. For that, several
mobile measurements of air temperature data were made in a single park (Gulbenkian’s Garden).
These measurements were used for the interpolation of air temperature. Furthermore, urban biomass
was estimated using remote sensing products, namely Landsat satellite images. Ultimately, a linear
regression model was built from the relation between vegetation density and air temperature. Results
regarding the estimation of biomass (AGB) in the city of Lisbon were higher in winter than in
summer. The urban green spaces cooling potential model showed that for every decrease of 1 C
in air temperature between a measuring point and a reference station we need to increase the area
covered by vegetation by 50 m2 (planar measure). This methodology can be applied in other urban
areas for the quantification of the cooling e ect provided by vegetation in order to improve urban
climate thermal conditions and human well-being and, consequently, to mitigate some consequences
of future climate change.
Descrição
Palavras-chave
Urban Heat Island (UHI) Cooling Park Efect Vegetation cooling potential Above Ground Biomass (AGB) Normalized Difference Vegetation Index (NDVI) Lisbon
Contexto Educativo
Citação
Reis, C., & Lopes, A. (2019) Evaluating the cooling potential of urban green spaces to tackle urban climate change in Lisbon. Sustainability, 11(9), 2480. https://doi.org/10.3390/su11092480.
Editora
MDPI