Seasonal and meteorological effects on the cooling magnitude of trees in subtropical climate

Cheung, Pui Kwan; Fung, Charmaine K.W.; Jim, Chi Yung

doi:10.1016/j.buildenv.2020.106911

Cited by 24 publications

(7 citation statements)

References 62 publications

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“…Analysing the results, it is possible to observe that, in line with the scientific literature, due to their shading effect, energy balance and transpiration cooling, vegetation results to be the most effective strategy to mitigate daytime urban human heat stress and so it is an important climate change mitigation strategy [37][38][39][40][41]. Specifically, here, the presence of Pinus pinea L. has a positive effect on the mitigation of air temperature and the improvement of thermal comfort along Corso Trieste.…”

Section: Discussionsupporting

confidence: 57%

The Challenge in the Management of Historic Trees in Urban Environments during Climate Change: The Case of Corso Trieste (Rome, Italy)

Gatto

Buccolieri

Perronace³

et al. 2021

Atmosphere

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This study carries out a quantitative analysis of the impact on microclimate (air temperature and thermal comfort) of a row of 165 historical Pinus pinea L. located in a central neighbourhood of Rome (Italy). The analysis starts from a qualitative general analysis on the stressful conditions leading to tree decline in the urban environment especially during extreme climate change phenomena. Subsequently, the effects of planting new types of trees are assessed using ENVI-met, a 3D prognostic non-hydrostatic model for the simulation of surface-plant-air interactions. Results, obtained by simulating three different scenarios in which the trees are first removed and then modified, show that a gradual renewal of the existing trees, based on priority criteria of maturity or senescence, vegetative and phytosanitary conditions, efficiency of ecosystem services and safety for citizens, has positive effects on thermal comfort. By integrating current results and scientific literature, the final aim of this work is to provide stakeholders with a strategic and systemic planning methodology, which, based on the innovative integrated use of tree management and modelling tools, may (i) enhance the benefits of greening in a scenario of climate change and (ii) lead to intervention strategies based on complementarity between conservation of existing trees and tree renewal.

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Section: Discussionsupporting

confidence: 57%

The Challenge in the Management of Historic Trees in Urban Environments during Climate Change: The Case of Corso Trieste (Rome, Italy)

Gatto

Buccolieri

Perronace³

et al. 2021

Atmosphere

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“…In 2020, Langenheim et al first used pedestrian access modeling, tree-scape shade modeling, and shade optimization in Melbourne, Australia, obtaining the results that planting the right tree in the right place at the right time could provide a more effective shading function and significantly reduce solar radiation flux, thereby improving thermal comfort [51]. Finally, Cheung et al (2020) studied five sites with different SVFs in a golf course in Hong Kong, China (a humid subtropical climate area), finding that the cooling magnitude of trees would be influenced by seasonal and meteorological effects, and UTS could reduce solar radiation and provide shading to exert cooling effects [52].…”

Section: Gi Ups Ufs Uts Gr Gw Referencementioning

confidence: 99%

A Comprehensive Review of Different Types of Green Infrastructure to Mitigate Urban Heat Islands: Progress, Functions, and Benefits

Shao

Kim

2022

Land

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Climate change and rapid urbanization increase/amplify urban heat islands (UHIs). Green infrastructure (GI) is an effective and popularly strategy used to moderate UHIs. This paper aims to better understand the progress of different GI types (urban parks, urban forests, street trees, green roofs, green walls) in mitigating UHIs, and what benefits they provide. Firstly, this paper used CiteSpace to analyze 1243 publications on the Web of Science from 1990 to 2021, then analyzed the function/regulation of ecosystem services/benefits and values of GI types in reducing UHIs. The historical review results show that research on all GI types showed rapid growth since 2013, and their GR increased rapidly. The highest-ranking keywords were urban heat island/heat island, climate/climate change/microclimate, and temperature/land surface temperature/air temperature. “Design,” “vegetation,” “quality,” and “reduction” are the top four strongest keyword bursts. The most published countries are the People’s Republic of China, USA, Australia, Germany, and Italy, and the top three institutions are the Chinese Academy of Sciences, Arizona State University, and the National University of Singapore. Landscape and Urban Planning, Building and Environment, Energy and Building, and Urban Forestry and Urban Greening are the most published journals. In urban areas, different GI types as a form of ecosystem hardware provide multiple functions (reduced land surface temperatures, lower building energy usage, improved thermal comfort and enhanced human health, reduced morbidity and mortality, etc.). GI thus provides a regulated ecosystem service to ameliorate UHIs primarily through temperature regulation and shade. At the same time, GI provides benefits and values (ecological, economic, social, and cultural) to humans and urban sustainable development. GI types determine the functions they provide, afford corresponding regulated ecosystem services, and provide benefits and values in a logical/recycle system. Overall, this review highlights the development and importance of GI, as well as the relationship of GI types and functions of regulating the ecosystem service benefits and values to mitigate UHI, and advances the study of climate change adaptation in cities.

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“…These study results showed that trees and vegetation reduced air temperatures in the range of 0.28 to 4°C while the shade factor provided 80% of the cooling effect during the summer [93]. Furthermore, the cooling benefit of trees was experimentally investigated by several studies [116][117][118][119], who concluded that trees provided notable cooling benefits ranged from 1.2 to 4.1°C during the day with a substantial increase in human thermal comfort. However, the research findings from these studies cannot be applied to other regions due to different city and building characteristics.…”

Section: Treesmentioning

confidence: 99%

“…Modeling Tool [140] Athens, Greece Reflective coatings ANOVA F-Statistical Analysis [131] City of Melbourne, Australia Green and cool roofs WRF-UCM [164] City of Melbourne, Australia Vegetated patches WRF-UCM [118] Hong Kong Woodland Experimental [158] Los Angeles, USA Vegetation, cool roofs and lighter color pavement DOE-2 and CSUMM [102] City of Melbourne, Australia Vegetation and cool roofs WRF-PUCM [117] Hong Kong Trees Experimental [165] Los Angeles, USA Increased vegetation and albedo CSUMM [159] California, USA Permeable asphalt pavement DBOLS-Statistical Analysis [23] Hong kong, China Planting and vegetation MM5 [129] University of Applied Sciences Neubrandenburg Green roof Experimental [116] Melbourne Trees Experimental [24] Singapore Park lands ENVI-met [119] Hong Kong Trees Experimental [166] Tokyo, Japan Green walls Coupled MM-CM-BEM [167] City of Vienna, Austria Green and blue spaces MUKLIMO_3 [135] Singapore Vertical green walls STEVE Model [168] Putrajaya, Malaysia Vegetation and water body WRF-UCM [169] London, UK Stack ventilation 3TC Model [170] Tokyo, Japan Photovoltaic Canopies Numerical PV-panel Heat Balance Model [171] Nevada, USA Reflective Roofs Analysis [172] Spain, Madrid Green roofs Sima Pro-LCI [173] Qatar Green roof and walls GCM and CCWorldWeatherGen tool [174] Tokyo, Japan Humidification and albedo increase at building-wall surfaces Coupled CM-BEM [115] Kobe, Japan Green roof and high reflection roof Numerical Equation [175] Arizona, USA Photovoltaic Canopies Statistical Analysis [115] Kobe, Japan Green roof and high reflection roof Numerical Equation Significant 3% [115] Significant - [175] Significant -- [115] Significant -…”

Section: Reference Location Mitigation Approachmentioning

confidence: 99%

Causes, Modeling and Mitigation of Urban Heat Island: A Review

Imran¹,

Shammas²,

Rahman³

et al. 2021

EARTH

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Urbanization leads to loss of vegetation and converting pervious areas into built-up and impervious areas, and consequently, urban areas expose higher temperatures as compared to surrounding rural areas, which is called Urban Heat Island (UHI). The UHI affects the urban environment and causes heat-related diseases and mortality that have increased over the last centuries. Considering the severity of the UHI problem, enormous research has been conducted and an extensive range of literature is available on this topic. This paper reviews the causes, modelling and mitigation strategies of the UHI. The urban infrastructure and anthropogenic heat sources are the main driving factors in developing the UHI in cities. Many approaches including observation and modelling techniques are used to understand the formation, causes and mitigation of the UHI. The formation and causes of the UHI largely depend on the size, shape and urban infrastructure of the cities as well as climatic conditions. Although various modelling techniques are used to study UHI, there are still lacks in all models to precisely represent the physical phenomena and complex urban infrastructure. Many UHI mitigation strategies are examined by numerous studies, while the increased urban vegetation is a more environmentally friendly solution. The study summarizes the important features and limitations of different modelling techniques and mitigation measures of the UHI. This study also identifies research gaps and proposes areas for further research.

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Seasonal and meteorological effects on the cooling magnitude of trees in subtropical climate

Cited by 24 publications

References 62 publications

The Challenge in the Management of Historic Trees in Urban Environments during Climate Change: The Case of Corso Trieste (Rome, Italy)

The Challenge in the Management of Historic Trees in Urban Environments during Climate Change: The Case of Corso Trieste (Rome, Italy)

A Comprehensive Review of Different Types of Green Infrastructure to Mitigate Urban Heat Islands: Progress, Functions, and Benefits

Causes, Modeling and Mitigation of Urban Heat Island: A Review

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