scholarly journals A Review of Green Roof Applications for Managing Urban Stormwater in Different Climatic Zones

2018 ◽  
Vol 10 (8) ◽  
pp. 2864 ◽  
Author(s):  
Musa Akther ◽  
Jianxun He ◽  
Angus Chu ◽  
Jian Huang ◽  
Bert van Duin
Keyword(s):  
Review Paper ◽  
Low Impact Development ◽  
Green Roof ◽  
Stormwater Runoff ◽  
Green Roofs ◽  
Influential Factors ◽  
Urban Stormwater ◽  
Climatic Zones ◽  
Typical Type ◽  
Urban Stormwater Runoff

Many regions have turned to low impact development technologies (LIDs), which are implemented to restore the changes in stormwater runoff that have resulted from urbanization. Green roofs are one typical type of LID. Until now, many studies have validated their roles in managing urban stormwater runoff. However, they have also revealed that the performance of green roofs largely varies with their design configuration, as well as their hydro-climatic exposure. The objectives of this review paper are to statistically synthesize the effects of the influential factors, including design and hydrologic variables, on green roof performance and to explore their effects in different climatic zones. The review’s results confirm the differences in the influential variables and, thus, the performance of green roofs in different climatic zones. These are the barriers to knowledge translation among engineering designers, stormwater managers, and policymakers in different climatic zones when implementing green roofs. Consequently, region- or site-specific studies are necessary to implement green roofs with confidence.

Urban stormwater runoff thermal characteristics and mitigation effect of low impact development measures

2018 ◽  
Vol 10 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Junqi Li ◽  
Yongwei Gong ◽  
Xiaojing Li ◽  
Dingkun Yin ◽  
Honghong Shi
Keyword(s):  
Retention Volume ◽  
Low Impact Development ◽  
Stormwater Runoff ◽  
Thermal Characteristics ◽  
Weather Conditions ◽  
Vegetative Cover ◽  
Urban Stormwater ◽  
Open Graded Friction Course ◽  
Urban Stormwater Runoff ◽  
Land Surfaces

Abstract Thermal pollution has become a severe environmental problem in China, but studies on thermal characteristics of urban stormwater runoff are scarce. The thermal enrichment of runoff from typical land surfaces was assessed during 2012–2014 in Beijing and Shenzhen, China. The temperature of stormwater runoff from rooftops, grass surfaces and different types of road surfaces was investigated under different rainfall conditions. The mitigation effects of low impact development (LID) measures were also evaluated. Impervious asphalt or concrete surfaces store and transfer heat, and were found to cause thermal enrichment of runoff from the start of a rainfall event. In addition to surface types, pre-event weather conditions and rainfall intensity influenced runoff temperature. The pervious surface of open graded friction course (OGFC) pavement postponed the time of peak runoff temperature. The retention volume of bioretention cells resulted in thermal energy mitigation by directing runoff into the soil and vegetative cover. The grass swales showed effective reduction of runoff temperature by approximately 1–2°C compared to asphalt, concrete and marble pavements. Therefore, LID measures, such as OGFC porous pavements, bioretention cells and grass swales, can mitigate the thermal impacts of urban stormwater runoff and alleviate resulting ecological problems.

scholarly journals Taxonomy of influential factors for predicting pollutant first flush in urban stormwater runoff

2019 ◽  
Vol 166 ◽  
pp. 115075 ◽  
Author(s):  
Thamali Perera ◽  
James McGree ◽  
Prasanna Egodawatta ◽  
K.B.S.N. Jinadasa ◽  
Ashantha Goonetilleke
Keyword(s):  
Stormwater Runoff ◽  
Influential Factors ◽  
First Flush ◽  
Urban Stormwater ◽  
Urban Stormwater Runoff

Spatial and Temporal Distribution of Heavy Metals Concentration in Urban Stormwater Runoff

2013 ◽  
Vol 726-731 ◽  
pp. 1801-1804 ◽  
Author(s):  
Shu Min Wang ◽  
Hui Yu
Keyword(s):  
Heavy Metal ◽  
Stormwater Runoff ◽  
Temporal Distribution ◽  
Urban Region ◽  
Spatial And Temporal Distribution ◽  
Urban Stormwater ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Urban Stormwater Runoff ◽  
Cu And Zn

In order to know the characteristic of spatial and temporal distribution of heavy metal concentrations in urban stormwater runoff, rainfall runoff from impervious underlying surfaces in urban region was observed during rain events. Results showed that during the precipitation process, heavy metal concentrations decreased gradually temporally (except Cd); concentrations of Fe, Cu and Zn meet Class III standard of Environmental Quality Standards for Surface Water in terminal runoff, but concentrations of Cd and Pb go beyond this standard far. Heavy metal concentrations in runoff from different types of landuses were significantly different. The arithmetic average concentrations of Fe, Cd, Cu and Zn in stormwater runoff from roof (e.g.,34.4mg/L, 0.15mg/L, 1.25mg/L and 1.23mg/L, respectively) were obviously higher than that in stormwater runoff from road (e.g., 11.8mg/L, 0.05mg/L, 0.13mg/L and 0.69mg/L, respectively).

scholarly journals IMPACT OF GREEN ROOF ON HEATING AND COOLING IN CONTEXT OF DIFFERENT CLIMATIC ZONES IN INDIA

2021 ◽  
pp. 436-440
Author(s):  
Ar. Ankur Bhardwaj ◽  
Dr. Shweta Chaudhary ◽  
Ar.Kirti Varandani
Keyword(s):  
Urban Areas ◽  
Green Roof ◽  
Green Roofs ◽  
Climatic Zones ◽  
Sustainable Living ◽  
Secondary Sources ◽  
Heating And Cooling ◽  
The World ◽  
Depth Study ◽  
Rainwater Runoff

The ecological, social and visual commitments that green roofs can make towards sustainable living in more intensified urban centres are generally recognized around the world. Green roof is one such sustainable methodology, utilization of which causes us in insulating the buildings and, subsequently contributing to better energy proficient execution of the same. Green roofs additionally give environment to various species, lessen the rainwater runoff and better deal with the carbon-dioxide cycle. In spite of these advantages, Green roofs are not as basic an element in India as they are in other European and American urban areas. In this paper an attempt has been made to enhance the advantages of this innovation in India. Green roofs systems looks simple in terms of setting up, but actually very complex in maintaining and achieving sustainability. In depth study of green roofs, historic background, climatic zones, impacts of green roofs on heating and cooling, benefits, problems and opportunities is done with the help of data taken from secondary sources like books, magazines and published literature (articles, journals, conference proceedings) form various e-libraries and other online platforms. KEY WORDS: Heating, Cooling, Green Roof, Sustainability)

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