Urban Heat Island Mitigation: A GIS-based Model for Hiroshima

Mutani, Guglielmina; Todeschi, Valeria; Matsuo, Kaoru

doi:10.18280/i2m.180401

Cited by 10 publications

(10 citation statements)

References 14 publications

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“…Both focus on mitigation measures to reduce greenhouse gases (GHG) emissions, introducing the concept of Resilient Cities and Communities: a city prepared to absorb and recover from any shock or stress, adapting on the continual change [2]. To plan sustainable cities, the application of models improves the livability of a territory, for example in [3] a useful tool is proposed for designing a comfort model by optimizing energy consumption, while [4] provides a methodology that incorporates mitigation of the UHI phenomenon in urban planning. Lots of new energy policies are favoring renewable energy sources which involves in new specific challenges.…”

Section: Research Backgroundmentioning

confidence: 99%

Indicators and Representation Tools to Measure the Technical-Economic Feasibility of a Renewable Energy Community. The Case Study of Villar Pellice (Italy)

Mutani¹,

Santantonio²,

Beltramino³

2021

IJSDP

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Energy Communities (EC) are intended as legal entities that can ensure environmental, economic, and social benefits for energy exchanges between its members. The Italian legislation has recently introduced incentives to Renewable Energy Communities (REC). This work analyses the case study of the REC in Villar Pellice (Turin) and defines a methodology to assess its technical-economic feasibility. The hourly energy consumption and the local renewable energy production are assessed through a place-based methodology, considering different category of end users (municipalities, residential dwelling, companies), and obtaining data from available online database. The REC energy performance is assessed through the self-consumption and the self-sufficiency indexes. Besides, cost-optimal analysis evaluates its economic feasibility, considering investment costs and economic incentives. Several interventions are hypothesized to compare possible REC scenarios (e.g., photovoltaic panels and storage systems installation, energy efficiency measures for public lighting, and different configurations of end users). Results show that REC allows to aggregate stakeholders, ensuring economic advantages and environmental benefits. The methodology applied in this work can support the design phase of the RECs. Its flexibility makes it adaptable to different territorial and regulatory contexts, in evaluating the optimal REC configuration to maximize revenues from the incentive and reach the highest level of energy independence.

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Section: Research Backgroundmentioning

confidence: 99%

Indicators and Representation Tools to Measure the Technical-Economic Feasibility of a Renewable Energy Community. The Case Study of Villar Pellice (Italy)

Mutani¹,

Santantonio²,

Beltramino³

2021

IJSDP

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“…GIS-based methodology to evaluate green roofs and green urban areas 9 [4][5][6][7][8][9][10][11][12] Outdoor thermal comfort: UHI mitigation strategies and thermal comfort indexes 20 [2,4,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Energy savings and Indoor thermal comfort from Green roofs 5 [1,[31][32][33][34] 2.…”

Section: No Of Papers Sourcementioning

confidence: 99%

“…As already mentioned, green areas improves the aesthetic value of urban context reducing the UHI effect and achieving comfortable microclimate and climate conditions [13][14][15][16][17][18]. The urbanization plays a key role in UHI expansion, an analysis of land cover types is critical for the outdoor spaces assessment in order to improve the thermal comfort, liveability and air quality of an urban environment [19].…”

Section: Outdoor Thermal Comfort: Uhi Mitigation Strategies and Thermmentioning

confidence: 99%

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The Effects of Green Roofs on Outdoor Thermal Comfort, Urban Heat Island Mitigation and Energy Savings

Mutani

Todeschi

2020

Atmosphere

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There is growing attention to the use of greenery in urban areas, in various forms and functions, as an instrument to reduce the impact of human activities on the urban environment. The aim of this study has been to investigate the use of green roofs as a strategy to reduce the urban heat island effect and to improve the thermal comfort of indoor and outdoor environments. The effects of the built-up environment, the presence of vegetation and green roofs, and the urban morphology of the city of Turin (Italy) have been assessed considering the land surface temperature distribution. This analysis has considered all the information recorded by the local weather stations and satellite images, and compares it with the geometrical and typological characteristics of the city in order to find correlations that confirm that greenery and vegetation improve the livability of an urban context. The results demonstrate that the land-surface temperature, and therefore the air temperature, tend to decrease as the green areas increase. This trend depends on the type of urban context. Based on the results of a green-roofs investigation of Turin, the existing and potential green roofs are respectively almost 300 (257,380 m2) and 15,450 (6,787,929 m2). Based on potential assessment, a strategy of priority was established according to the characteristics of building, to the presence of empty spaces, and to the identification of critical areas, in which the thermal comfort conditions are poor with low vegetation. This approach can be useful to help stakeholders, urban planners, and policy makers to effectively mitigate the urban heat island (UHI), improve the livability of the city, reduce greenhouse gas (GHG) emissions and gain thermal comfort conditions, and to identify policies and incentives to promote green roofs.

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“…• Remote sensing images from Landsat 8 (OLI/TIRS) with a precision 30 meters, that have used to analyze the land cover types (territorial scale) [22]; • Orthophotos with RGB (red, green, blue) and IR (infrared) spectral bands with a precision of 0.1 meters (building scale) useful to evaluate color tones [7]; • Digital Surface Models (DSM) with a precision of 0.5 and 5 meters, represents the earth's surface and includes all objects (surfaces of trees, buildings), have been used for roof analysis and solar radiation assessment on the rooftop (building scale) [23];…”

Section: Input Data Collection and Processingmentioning

confidence: 99%

Low-Carbon Strategies for Resilient Cities: A Place-Based Evaluation of Solar Technologies and Green Roofs Potential in Urban Contexts

Mutani¹,

Todeschi²

2020

IJES

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The use of smart green technologies such as solar panels or green roofs on the top of buildings are identified as low-carbon infrastructure strategies. This work examines the roofs' potential in a densely built-up context, analyzing the effects of smart green technologies on energy savings and thermal comfort conditions at district scale. The methodology presented can be used to accurately estimate solar energy potential and green roof potential on existing building stock at national, municipal, district and building level, with direct application in energy efficiency policy design. With the support of a place-based approach, the methodology was applied to a district in the city of Turin (Italy). A 3D model was created, some scenarios have been investigated, and priorities of interventions have been established mapping the spatial distribution of different parameters. From the results, it is emerged that there is a significant potential in Turin, and the use of green technologies especially in critical areas with solar technologies can promote a more sustainable development of the city. Solar modules and green roofs have been used alternatively to maximize the benefits. The applicability of these technologies can be integrated in the Municipal Energy-Environmental annex of the Building Regulations of the city of Turin.

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Urban Heat Island Mitigation: A GIS-based Model for Hiroshima

Cited by 10 publications

References 14 publications

Indicators and Representation Tools to Measure the Technical-Economic Feasibility of a Renewable Energy Community. The Case Study of Villar Pellice (Italy)

Indicators and Representation Tools to Measure the Technical-Economic Feasibility of a Renewable Energy Community. The Case Study of Villar Pellice (Italy)

The Effects of Green Roofs on Outdoor Thermal Comfort, Urban Heat Island Mitigation and Energy Savings

Low-Carbon Strategies for Resilient Cities: A Place-Based Evaluation of Solar Technologies and Green Roofs Potential in Urban Contexts

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