The Role of Green Roofs on Microclimate Mitigation Effect to Local Climates in Summer

Park, Jonghoon; Kim, Jun‐Hyun; Dvorak, Bruce; Lee, Dong Kun

doi:10.1007/s41742-018-0124-9

Cited by 17 publications

(5 citation statements)

References 63 publications

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“…Lee and Jim [23] set thermal sensors to monitor T air.out above the studied roofs at three positions, including 0.15 m, 0.5 m, and 1.5 m. Qin, Wu, Chiew and Li [72] and Peng and Jim [3] reported values of T air.out at 0.3 m and 1.2 m above the roofs, respectively. Park, Kim, Dvorak and Lee [86] reported an outstanding result, as ∆T air.out reached a peak of 22.6 • C, whereas others observed much smaller T air.out reductions. However, it was similarly detected that a higher reduction was observed closer to plant canopies and the greater effect of GRs occurred during the day and in summer.…”

Section: Human Thermal Comfort (Htc) Improvementmentioning

confidence: 96%

“…Of the 37 published works in Table 2, there are few papers researching the decrease in ambient air temperature (∆T air.out ) after GR implementation. Some exceptions are the studies by Park, Kim, Dvorak and Lee [86], Lee and Jim [23], Morakinyo, Dahanayake, Ng and Chow [26], Peng and Jim [3], and Jim and Peng [96], as they undertook an analysis of T air.out above a living roof and a non-living roof. Nevertheless, in addition to different GR characteristics and study locations, they produced greatly divergent outcomes due to the nonidentical set-ups of their measuring devices.…”

Section: Human Thermal Comfort (Htc) Improvementmentioning

confidence: 99%

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Quantifying the Benefits and Ecosystem Services Provided by Green Roofs—A Review

Nguyen

Muttil

Tariq

et al. 2021

Water

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Water-sensitive urban design (WSUD) has been widely used in cities to mitigate the negative consequences of urbanization and climate change. One of the WSUD strategies that is becoming popular is green roofs (GR) which offer a wide range of ecosystem services. Research on this WSUD strategy has been continuously increasing in terms of both quantity and quality. This paper presents a comprehensive review quantifying the benefits of GRs in papers published since 2010. More precisely, this review aims to provide up-to-date information about each GR benefit and how they have improved over the last decade. In agreement with previous reviews, extensive GRs were considerably researched, as compared to very limited studies on intensive and semi-intensive GRs. Each GR ecosystem service was specifically quantified, and an imbalance of GR research focus was identified, wherein urban heat- and runoff-related benefits were outstandingly popular when compared to other benefits. The results also highlight the recent introduction of hybrid GRs, which demonstrated improvements in GR performance. Furthermore, limitations of GRs, obstacles to their uptake, and inconsistent research findings were also identified in this review. Accordingly, opportunities for future research were pointed out in this review. This paper also recommends future studies to improve upon well-known GR benefits by exploring and applying more innovative GR construction techniques and materials. At the same time, further studies need to be undertaken on inadequately studied GR benefits, such as reduced noise and air pollution. In spite of the existence of reliable modelling tools, their application to study the effects of large-scale implementations of GRs has been restricted. Insufficient information from such research is likely to restrict large-scale implementations of GRs. As a result, further studies are required to transform the GR concept into one of the widely accepted and implemented WSUD strategies.

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Section: Human Thermal Comfort (Htc) Improvementmentioning

confidence: 96%

Section: Human Thermal Comfort (Htc) Improvementmentioning

confidence: 99%

Quantifying the Benefits and Ecosystem Services Provided by Green Roofs—A Review

Nguyen

Muttil

Tariq

et al. 2021

Water

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“…Because of the limited land resources, GS&WB should integrate into compact cities in a new way. Roof greening and wall greening are practicable modes [72,73]. As for the building itself, the insulation performance of the exterior walls should be improved for a relatively constant indoor temperature and comfort.…”

Section: Discussionmentioning

confidence: 99%

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Wang

Zhang

Lin

et al. 2021

IJGI

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Continuous growth of building energy consumption CO2 emission (BECCE) threatens urban sustainable development. Urban form is an important factor affecting BECCE. Compactness is a significant urban morphological characteristic. There is currently a lack of research on the effect of urban three-dimensional (3D) compactness on BECCE. To clarify the research value of 3D compactness, we investigated whether 3D compactness has a stronger impact on BECCE than two-dimensional (2D) compactness. A total of 288 buildings of the People’s Bank of China (PBOC) were divided into 5 zones according to building climate demarcation. As BECCE is affected mainly by four aspects (socioeconomic condition, building features, macroclimate, and urban form), the BECCE driven by urban form (BECCE-f) in each zone was calculated firstly using the partial least square regression model. Normalized compactness index (NCI) and normalized vertical compactness index (NVCI) were calculated with Python to quantify urban 2D and 3D compactness within a 1 km buffer of PBOC buildings. The mean NCI and NVCI values of each zone were adopted as 2D and 3D compactness of this zone. Gray correlation analysis of the five zones showed that the connection between the NVCI and BECCE-f is stronger than that between NCI and BECCE-f. Based on this, we believe that the emphasis of later research should be shifted to urban 3D form, not just 2D elements. 3D form can describe the real urban form in a more accurate and detailed manner. Emphasizing 3D morphological characteristics in studies of the relationship between urban form and building energy performance is more meaningful and valuable than only considering 2D characteristics. The impact mechanism of urban form on BECCE-f should also be analyzed from the perspective of 3D form. This study also provides beneficial solutions to building energy saving and low-carbon building construction.

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“…The temperature reduction ranges from 0.5 to 6.1 • C. However, it is essential to know that, except for J. Park et al [132], other studies reported a reduction of only up to 2 • C. Amongst the studies that used a model-based approach, Heidarinejad and Esmaili [133] reported the highest reduction in air temperature (13 • C). The reason could be the consideration of plant metabolism, including photosynthesis in the model.…”

Section: Outside Air Temperaturementioning

confidence: 99%

Urban Integration of Green Roofs: Current Challenges and Perspectives

Joshi

Teller

2021

Sustainability

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Green roofs (GRs) are a sustainable alternative to conventional roofs that provide multiple ecosystem services. Integrating GRs into urban areas is highly relevant considering the rapidly increasing built-up in cities. Therefore, this paper systematically and comprehensively reviews the recent literature from 2011 to 2019 on GRs to identify the challenges and perspectives related to the urban integration of GRs. The review suggests that the effectiveness of GRs in delivering ecosystem services is largely dependent on context-specific parameters such as weather conditions and existing construction or design-related parameters. Integrating GRs into urban areas can be challenging given the diversity of actors, functions, and conditions characterizing these areas. Although significant research has already been conducted on GRs, research covering more geographical locations and contexts is needed. The review points out the need to include future urbanization scenarios, such as tall buildings while analyzing the impact of GRs on ecological networks. Additionally, the review emphasizes the inclusion of urban morphological parameters alongside an analysis of the impact of GRs on microclimate regulation and air quality. In terms of social acceptance, this review points out the need to consider the temporal cycles of vegetation for noting users’ perspectives. Additionally, further research is required on the social impact of GRs, considering their influence on property prices. Lastly, the review stresses the need for more city-scale studies on the impact of GRs on ecosystem services.

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The Role of Green Roofs on Microclimate Mitigation Effect to Local Climates in Summer

Cited by 17 publications

References 63 publications

Quantifying the Benefits and Ecosystem Services Provided by Green Roofs—A Review

Quantifying the Benefits and Ecosystem Services Provided by Green Roofs—A Review

Exploring the Connection between Urban 3D Form and Building Energy Performance and the Influencing Mechanism

Urban Integration of Green Roofs: Current Challenges and Perspectives

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