A carregar...
Publicação
Análise espaço-temporal da vegetação e da temperatura de superfície em episódios de onda de calor : aplicação de indicadores de deteção remota no Parque Urbano Dr. Luís César Pereira
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 4.01 MB | Adobe PDF |
Autores
Orientador(es)
Resumo(s)
The increase in the frequency and intensity of heat waves is a growing challenge to public health, particularly in urban areas, where the effect of Urban Heat Islands (ICU) is most pronounced. Nature-Based Solutions (NBS) play an important role in the adaptation of cities to this phenomenon, although there are still gaps in the evaluation of their thermal performance in the medium and long term. The present study analyzes the Dr. Luís César Pereira Urban Park, located in the Lisbon Metropolitan Area, focusing on the contribution of trees to microclimatic cooling. The Normalized Difference Vegetation Index (NDVI), the Normalized Difference Water Index (NDWI) and the Surface Temperature (LST) were applied on summer days and during extreme heat episodes, in the years 2022, 2023 and 2024. The results show a thermal reduction of about 2 °C in the perimeter of the Park up to 500m. However, the absence of thermoregulatory influence of the Tagus River, its location within a dense urban area and the lack of data on air temperature make it difficult to confirm the formation of a Park Cool Area. While the vegetation generally exhibits good vitality and an absence of water stress, temperatures above 40 °C were recorded in wooded areas. This reflects limitations associated with the inadequate shading provided by certain species, the reduced effectiveness of the trees during extreme episodes, and the untapped potential of the Ribeira de Santa Sofia, whose seasonal characteristics hinder thermal regulation. Even so, the park reveals a significant capacity to promote thermal comfort, which is particularly relevant considering that about 80% of the population living within a 300 m radius is considered as vulnerable to heat waves.
Descrição
Relatório de Estágio de Mestrado, Ecologia e Gestão Ambiental, 2025, Universidade de Lisboa, Faculdade de Ciências
Palavras-chave
Heat extremes Nature-based solutions Urban heat island Public health Sustainable urban planning