Air Quality, Climate Change And Resilience In
The Porto Urban Area
Author(s)
C. Borrego, H. Martins, J. H. Amorim, S, Freitas & A. I. Miranda
Abstract
The combined effect of global climate change and urban growth makes people in
cities more vulnerable to environmental problems like extreme weather and poor
air quality. Project CLICURB aims at assessing the impact of future climate on
urban areas and how cities can adapt to reduce exposure and sensitivity to those
impacts. CLICURB focuses on Porto, a European urban area experiencing
accelerated rates of urbanization and simultaneously presenting poor air quality.
In the framework of one of CLICURB’s tasks, regarding the implementation
and effectiveness of adaptation measures, the WRF-UCM-CAMx numerical
modelling system was used to evaluate the effects of the expansion of Porto’s
City Park on meteorology and air quality. Two high spatial resolution
simulations were conducted for the study area, current and expanded, for a twoday
period contained in a heat wave. Results indicate that the expansion
improves local microclimatic conditions, with temperature decreases and slight
increases in wind speed; regarding air quality, ground-level concentrations of
pollutants present negligible variations.
The project also aims to assess the effects of wind dynamics and streetcanyon
configuration on pedestrian comfort. For this purpose, a micro-scale
modelling approach, based on the application of Computational Fluid Dynamics
(CFD) model Fluent®, was carried out for a study area with approximately 600 x
600 m2. Eight typical meteorological situations were defined based on climate
observation analysis. Results allow the identification of areas non-compliant
with an international criterion for human comfort and where measures for
mitigating the wind speed would improve conditions for outdoor activities.
Keywords
climate change, resilience, air quality, human comfort.
Related Book
Other papers in this volume
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