The role of green roofs in climate change mitigation. A case study in Seville (Spain)

Herrera-Gómez, Sergio Santiago; Nolasco, Abel Quevedo; Pérez-Urrestarazu, Luis

doi:10.1016/j.buildenv.2017.07.036

Cited by 71 publications

(25 citation statements)

References 32 publications

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“…The intensive green roofs, which are also called roof gardens, have thicker substrate layers and are planted with taller vegetation, such as shrubs and small trees [27]. Existing studies have examined the performance of green roofs in building indoor temperature reduction and energy consumption savings by considering various factors, including climate [19,28,29], green roof types [19,30], spatial coverage [19], maintenance status [27,29], building density [27], and building height [30]. The majority of existing studies simulated the performance of green roofs using an energy balance model of vegetated rooftops integrated into EnergyPlus software, which was developed by Sailor [20].…”

Section: Introductionmentioning

confidence: 99%

“…The potential symbiotic relationship between PV panels and green roofs had been proved by many studies [31,[35][36][37][38][39][40], which suggested that integrating PV with green roofs can provide reciprocal benefits to both PV electrical production and green roof communities [36]. However, climate conditions, types of vegetation species on green roofs, and the installation heights of PV Existing studies have examined the performance of green roofs in building indoor temperature reduction and energy consumption savings by considering various factors, including climate [19,28,29], green roof types [19,30], spatial coverage [19], maintenance status [27,29], building density [27], and building height [30]. The majority of existing studies simulated the performance of green roofs using an energy balance model of vegetated rooftops integrated into EnergyPlus software, which was developed by Sailor [20].…”

Section: Introductionmentioning

confidence: 99%

“…In many cases, the mitigation potential of building energy consumption increases induced by climate change has been briefly discussed in existing publications [11,17,21,30,44,45]. However, little research has been conducted to test the performance of mitigation options, such as sustainable roofs (green roofs, PV roofs, or PV-greens), based on the results of these previous studies, which can be valuable in guiding policymakers.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the Effect of Green Roof Systems and Photovoltaic Panels for Building Energy Savings to Mitigate Climate Change

Zheng

Weng

2020

Remote Sensing

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Green roofs and rooftop solar photovoltaic (PV) systems are two popular mitigation strategies to reduce the net building energy demand and ease urban heat island (UHI) effect. This research tested the potential mitigation effects of green roofs and solar photovoltaic (PV) systems on increased buildings energy demand caused by climate change in Los Angeles County, California, USA. The mitigation effects were assessed based on selected buildings that were predicted to be more vulnerable to climate change. EnergyPlus software was used to simulate hourly building energy consumption with the proper settings of PV-green roofs. All buildings with green roofs showed positive energy savings with regard to total energy and electricity. The savings caused by green roofs were positively correlated with three key parameters: Leaf Area Index (LAI), soil depth, and irrigation saturation percentage. Moreover, the majority of the electricity-saving benefits from green roofs were found in the Heating, Ventilation, and Cooling (HVAC) systems. In addition, this study found that green roofs have different energy-saving abilities on different types of buildings with different technologies, which has received little attention in previous studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling the Effect of Green Roof Systems and Photovoltaic Panels for Building Energy Savings to Mitigate Climate Change

Zheng

Weng

2020

Remote Sensing

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“…Climate changes are predicted to cause more environmental stressors in the future, while we need to intensify food production ( Junge & Graber 2014). The required transition will need increased flexibility of the urban environment, more sustainable use and re-use of natural resources as well as the adaptation of infrastructure systems (Herrera-Gomez et al 2017). All this requires future city development to be smart and to integrate innovative solutions.…”

Section: Introductionmentioning

confidence: 99%

Urban agriculture as a keystone contribution towards securing sustainable and healthy development for cities in the future

et al. 2019

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Research and practice during the last 20 years has shown that urban agriculture can contribute to minimising the effects of climate change by, at the same time, improving quality of life in urban areas. In order to do so most effectively, land use and spatial planning are crucial so as to obtain and maintain a supportive green infrastructure and to secure citizens' healthy living conditions. As people today trend more towards living in green and sustainable city centres that can offer fresh and locally produced food, cities become again places for growing food. The scope of urban agriculture thereby is to establish food production sites within the city's sphere; for example, through building-integrated agriculture including concepts such as aquaponics, indoor agriculture, vertical farming, rooftop production, edible walls, as well as through urban farms, edible landscapes, school gardens and community gardens. Embedded in changing urban food systems, the contribution of urban agriculture to creating sustainable and climate-friendly cities is pivotal as it has the capacity to integrate other resource streams such as water, waste and energy. This article describes some of the current aspects of the circular city debate where urban agriculture is pushing forward the development of material and resource cycling in cities.

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“…During times of snow cover, snow acts as an insulator and reduces the relative energy-saving benefits achieved by a green roof (Zhao, 2015;Squier et al, 2016;Collins et al, 2017). Green roofs can reduce the amplitude of outer surface temperature fluctuations in summer, and the cooling effect of a green roof in summer is significant on sunny days (He et al, 2016;Herrera-Gomez et al, 2017;Bevilacqua et al, 2018). Therefore, the experimental data were selected for processing in the three periods: cooling and snowfall in winter and sunny in winter and summer.…”

Section: Experimental Designmentioning

confidence: 99%

Reduction in Carbon Dioxide Emission and Energy Savings Obtained by Using a Green Roof

Cai

Feng

et al. 2019

Aerosol Air Qual. Res.

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Green roofs have good heat preservation and insulation performance, which plays an important role in reducing airconditioning load and reducing carbon dioxide emissions. Experimental research and numerical simulation analysis on the energy-savings and ecological benefits of green roofs in hot summer and cold winter areas in Wuxi, China (31°N, 120°E) are carried out. The experimental results show that a new type of Buddha grass can absorb 1.79 kg of CO 2 and release 1.3 kg of O 2 per square meter per year. In addition, the annual carbon emission reduction of the green roof in Wuxi was 9.35 kg m-2 , and the emission reduction benefit of the green roof was calculated to be USD $1.02 m-2 a-1. The energy consumption simulation shows that the green roof per unit area can save 11.53 kWh per year, and the annual quantitative ecological benefit of a green roof is USD $3.37 m-2. The calculated dynamic investment return is 10 years. A green roof has the benefits of heat preservation and insulation; meanwhile, it can reduce energy consumption. It is also worth mentioning that its energysaving potential and ecological benefits are substantial, and the investment payback time is short, which makes it worth promoting in a large area.

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The role of green roofs in climate change mitigation. A case study in Seville (Spain)

Cited by 71 publications

References 32 publications

Modeling the Effect of Green Roof Systems and Photovoltaic Panels for Building Energy Savings to Mitigate Climate Change

Modeling the Effect of Green Roof Systems and Photovoltaic Panels for Building Energy Savings to Mitigate Climate Change

Urban agriculture as a keystone contribution towards securing sustainable and healthy development for cities in the future

Reduction in Carbon Dioxide Emission and Energy Savings Obtained by Using a Green Roof

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