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Projeto de investigação
Alterações climáticas urbanas: o impacte das superfícies termicamente pouco eficientes nas Ilhas de Calor e no conforto térmico em Lisboa
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The climate of my neighborhood: households’ willingness to adapt to urban climate change
Publication . Matias, Márcia; Lopes, Sara; Lopes, António
Regarding the predisposition of individuals to change when confronted with future climate
scenarios, it is necessary to understand the perception of the groups under analysis and how to
engage with society to collectively act toward climate change mitigation. A question remains to
be answered: how to ensure that people engage, participate, and gain awareness of the undergoing
problem that urban climate change poses for the future of cities’ management? This research
intends to contribute to solving this question by raising another question: “How willing are residents
of the Alvalade neighborhood (Lisbon) to change their behavior and way of life when faced
with climate change scenarios?” We present a methodology using microclimatic modeling with
ENVI-met and questionnaires for the resident community. The present and future local climate
scenarios (representing a present hot day versus the extreme IPCC RCP 8.5 scenario) were presented
to a set of residents. These figures show the projected UTCI (Universal Thermal Climate Index) in a
dramatic but accurate aggravated way. The inquiries allowed us to conclude that people are more
aware of local climate change and health risks from extremely hot summer weather, but they continue
to resist adopting behavior change for adaptation, although most of them declared this could be
important to tackle climate change. The second conclusion is that people think that local authorities
should be more active than themselves and will have greater responsibility for climate change adaptation
and interventions. In times of climate crisis, the participation of the resident community can be
an important help in decision making and finding measures to mitigate adverse climate effects in
urban environments.
LCZ thermal and exoatmospheric albedo assessment using Landsat 8 land surface temperature and reflectance dataset: case study of Lisbon
Publication . Matias, Márcia; Lopes, António
This study investigates microclimate changes induced by urbanization, with a focus on the Urban Heat Island (UHI) phenomenon and the crucial role of Land Surface Temperature (LST). Using the Landsat 8 Land Surface Temperature and Reflectance dataset obtained from the USGS Earth Explorer platform, the research evaluates LST and exoatmospheric albedo characteristics within Lisbon's Metropolitan Area across a defined set of thermal periods from 2015 to 2020. Among the findings, the Bare Soil or Sand LCZ consistently exhibits heightened LST values, while the Large Low Rise urban LCZ consistently records the highest temperatures, exceeding 54 °C and 55 °C in spring and summer and 43.8 °C and 37.8 °C in autumn and winter, respectively. These insights, derived from a meticulous examination of the Landsat 8 dataset and advanced processing methods, bear critical implications for climate change adaptation strategies, providing valuable insights to mitigate the adverse effects of the Urban Heat Island and foster sustainable urban development practices.
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Fundação para a Ciência e a Tecnologia
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Número da atribuição
2021.05248.BD