Impacts of land use changes from the Hanoi Master Plan 2030 on urban heat islands: Part 1. Cooling effects of proposed green strategies

Kubota, Tetsu; Lee, Han Soo; Trihamdani, Andhang Rakhmat; Phương, Trần Thị Thu; Tanaka, Takahiro; Matsuo, Kaoru

doi:10.1016/j.scs.2017.04.001

Cited by 29 publications

(12 citation statements)

References 91 publications

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“…existing UHI impacts, and in particular projections of increasing temperature due to urban growth and urban planning, are still limited [19,[42][43][44][45][46][47][48][49].…”

Section: Study Areamentioning

confidence: 99%

“…Moreover, available UHI studies are intended to evaluate the impact of existing land-use change on increasing temperature [36][37][38][39][40][41]. However, the research on mitigation of the existing UHI impacts, and in particular projections of increasing temperature due to urban growth and urban planning, are still limited [19,[42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

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The Sensitivity of Urban Heat Island to Urban Green Space—A Model-Based Study of City of Colombo, Sri Lanka

et al. 2019

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Urbanization continues to trigger massive land-use land-cover change that transforms natural green environments to impermeable paved surfaces. Fast-growing cities in Asia experience increased urban temperature indicating the development of urban heat islands (UHIs) because of decreased urban green space, particularly in recent decades. This paper investigates the existence of UHIs and the impact of green areas to mitigate the impacts of UHIs in Colombo, Sri Lanka, using UrbClim, a boundary climate model that runs two classes of simulations, namely urbanization impact simulations, and greening simulations. The urbanization impact simulation results show that UHIs spread spatially with the reduction of vegetation cover, and increases the average UHI intensity. The greening simulations show that increasing green space up to 30% in urban areas can decrease the average air temperature by 0.1 °C. On the other hand, converting entire green areas into urban areas in suburban areas increases the average temperature from 27.75 °C to 27.78 °C in Colombo. This demonstrates the sensitivity of UHI to vegetation cover in both urban and suburban areas. These seemingly small changes are average grid values and may indicate much higher impacts at sub-grid levels.

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“…existing UHI impacts, and in particular projections of increasing temperature due to urban growth and urban planning, are still limited [19,[42][43][44][45][46][47][48][49].…”

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Sensitivity of Urban Heat Island to Urban Green Space—A Model-Based Study of City of Colombo, Sri Lanka

et al. 2019

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“…Design of permeable green interconnected regions which may be acceded by slow mobility represents a key option. Increasing interest is also dedicated to those heat emission treatment solutions for carrying heat from dense and overheated areas and dissipate it through underground system (Kubota et al, 2017).…”

Section: Conclusion: Future Needs and Prioritiesmentioning

confidence: 99%

Facing the urban overheating: Recent developments. Mitigation potential and sensitivity of the main technologies

Pisello

Saliari

Vasilakopoulou

et al. 2018

WIREs Energy & Environment

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Urban overheating represents an internationally acknowledged anthropogenic phenomenon related to climate change and to the massive shift of population worldwide toward urban areas, which are increasingly enlarging their size and density. The consequences of this urban warming (i.e., urban heat island) may compromise citizens' quality of life in urban areas, indoor and outdoor comfort perception, and building energy performance in summer conditions. In this panorama, this review presents recent contributions demonstrating the effectiveness and urgent need of existing mitigation strategies. The same strategies are also comparatively assessed by means of a sensitivity analysis demonstrating their effect with varying climate conditions and urban context. Results of existing studies, validated by the present assessment, aimed at quantitatively investigating the effect of mitigation strategies for reducing building cooling needs and enhancing urban well-being, thanks to international scientific effort carried out in the last decades. To this aim, the logical flow of the review deals with the main technologies for urban warming mitigation are described, together with the main findings of numerical and experimental research initiatives, demonstrating the field effect of improving pedestrians comfort and urban well-being all around the world. Then, the mitigation potential of key green, water and cool strategies is critically reviewed, and further scientific and implementation needs are discussed. All the reviewed contributions demonstrate an undeniable technology readiness level for their practical implementation and highlight the true necessity of a shared and synergistic policy effort worldwide.

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“…Vietnam is one of the most affected developing countries by climate change. Hanoi, capital of Vietnam currently possesses a considerable increment of hot summer days (> 35 o C) and even increase in air temperature up to 40-41 o C (Ho et al, 2011, Kubota et al, 2017. Furthermore, MSW in Hanoi were detected to contain high content of organic waste, at 71% in 2011 (JICA, 2011), hence facilitating to ammonium generation.…”

Section: Introductionmentioning

confidence: 99%

Temperature effect on diffusion and non-linear adsorption of ammonium through geosynthetic clay liner and in-situ clayey soil in Hanoi, Vietnam

Hoai

Mukunoki

Trong

2021

JGS Special Publication

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High concentration of ammonium was detected in groundwater in southern Hanoi, Vietnam while municipal solid waste (MSW) landfills were known to generate large amounts of NH4 + . Thus, bottom barrier with well performance should be required in Hanoi MSW landfills to minimize NH4 + migration. Hanoi is expected to experience temperature increase, which enables to reduce hydraulic-barrier performance. Hence, study on temperature effect on NH4 + adsorption and diffusion through landfill barriers plays a key role in prevention of NH4 + contaminated aquifers. The objective is to evaluate effect of three kinds of temperature ( 20o C, 35 o C and 50 o C) on NH4 + adsorption and diffusion through GCL and in-situ clayey soil sampled in Hanoi (HN clay). The results show that GCL possesses higher non-linear partitioning coefficient (Kd*) and lower diffusion coefficient (De) than HN clay in all cases of temperature. Both GCL and HN clay experienced an increase of Kd* and De in the temperature range of 20 o C and 35 o C. When temperature rises to 50 o C, Kd* tends to decrease but De keep increasing. Hence, the study indicates a more dominant effect of diffusion coefficient than non-linear partitioning coefficient in promotion of ammonium mass transport through HN clay.

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Impacts of land use changes from the Hanoi Master Plan 2030 on urban heat islands: Part 1. Cooling effects of proposed green strategies

Cited by 29 publications

References 91 publications

The Sensitivity of Urban Heat Island to Urban Green Space—A Model-Based Study of City of Colombo, Sri Lanka

The Sensitivity of Urban Heat Island to Urban Green Space—A Model-Based Study of City of Colombo, Sri Lanka

Facing the urban overheating: Recent developments. Mitigation potential and sensitivity of the main technologies

Temperature effect on diffusion and non-linear adsorption of ammonium through geosynthetic clay liner and in-situ clayey soil in Hanoi, Vietnam

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