DOI: 10.1016/j.atmosenv.2019.117123
论文题名: Re-Naturing Cities: Evaluating the effects on future air quality in the city of Porto
作者: Rafael S. ; Augusto B. ; Ascenso A. ; Borrego C. ; Miranda A.I.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 222 语种: 英语
英文关键词: Air quality
; Boundary layers
; Climate models
; Decision making
; Nitrogen oxides
; Numerical models
; Quality control
; Roofs
; Solar radiation
; Chemical compositions
; Climate change impact
; Future climate scenarios
; Modelling systems
; Positive and negative effect
; Urban areas
; Urban boundary layers
; Urban canopy models
; Climate change
; nitrogen dioxide
; ozone
; air quality
; air temperature
; climate change
; concentration (composition)
; heat wave
; numerical model
; simulation
; urban area
; urban atmosphere
; vertical mixing
; air quality
; air temperature
; albedo
; chemical composition
; city
; climate change
; concentration (parameter)
; controlled study
; heat
; particulate matter
; priority journal
; urban area
; Porto [Portugal]
; Portugal
学科: Air quality
; Climate change
; Nature-based solutions
; Numerical models
; Urban areas
中文摘要: The effect of different “green” measures, such as the increase of urban green areas, the application of green roofs and the increase of surfaces albedo on urban air quality were evaluated with the WRF-CHIMERE modelling system. In order to account for the heterogeneity of urban areas, a single layer urban canopy model was coupled to the WRF model. The case study consists of a heat wave occurring in the Porto (Portugal) urban area in a future climate scenario, considering the Representative Concentration Pathway RCP8.5. The influence of the selected measures on PM10, NO2 and O3 concentrations was quantified and compared with a control run (without measures) simulation scenario. The results revealed that all the measures are able to mitigate the effects of heat waves by reducing the air temperature between −0.5 °C and −1 °C (maximum differences for the mean of the episode). Positive and negative effects were found in terms of air quality. The implementation of green roofs and the increase of surfaces albedo promoted an overall increase of PM10 (between +0.6% and +1.5%) and NO2 (between +0.8% and 3.5%) concentrations, which are closely related to a decrease of vertical mixing in the urban boundary layer. The increase of green urban areas promoted an overall decrease (on average) of both PM10 and NO2, by around −1% and −3%, respectively. The O3 levels increased with the increase of urban green areas, mostly located over the Porto urban area. Slight differences were promoted by the implementation of green roofs. For the increase of surfaces albedo, both increases and decreases of O3 concentrations were observed. The obtained results contribute to the knowledge of the chemical composition of the urban atmosphere and can be of great importance for stakeholders and decision-makers to deal with climate change impacts. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160638
Appears in Collections: 气候变化与战略
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作者单位: CESAM, Department of Environment and Planning, University of Aveiro, Aveiro, 3810-193, Portugal
Recommended Citation:
Rafael S.,Augusto B.,Ascenso A.,et al. Re-Naturing Cities: Evaluating the effects on future air quality in the city of Porto[J]. Atmospheric Environment,2020-01-01,222