Cool materials with higher solar reflectance compared with conventional materials of the same color are widely used to maintain cooler urban fabrics when exposed to solar irradiation and to mitigate the Urban Heat Island (UHI). Photo-catalytic coatings are also useful to reduce air pollutants. Many studies related to these topics have been carried out during the past few years, although the lighting implication of reflective coatings have hardly been explored.

Many cities are already demonstrating their commitments to a more sustainable future and there are many excellent examples of green urban development, according to a new FAO publication called "Forests and sustainable cities - Inspiring stories from around the world" launched on the occasion of the International Day of Forests.

As urban overheating is increasing, there is a strong public interest towards mitigation strategies to enhance comfortable urban spaces, for their role in supporting urban metabolism and social life. The study presents an assessment of the existing thermal comfort and usage of San Silvestro Square in Rome during the summer, and performs the simulation of cooling strategies scenarios, to understand their mitigation potential for renovation projects.

This report contains ideas and case studies from around the world that showcase best practices in sustainable design for arid cities. At the heart of the report sit three key recommendations to shape the next century of city building in arid regions: Learning from the past.

Green roofs offer a series of benefits to buildings and to the urban environment. Their use in dry climates requires optimizing the choice of their components (i.e., vegetation, substrate and drainage layer) for the specific local climatic conditions, in order to minimize irrigations needs while preserving the attributes of the roof. In this study, we calibrated and validated an existing hydrological model—IHMORS—for the simulation of the hydrological performance of green roofs.

Green areas induce smaller increases in the air temperature than built-up areas. They can offer a solution to mitigating the urban heat island impacts during heat waves, since the cool air generated by a park is diffused into its immediate surroundings through forced or natural convection. The purpose of this study is to characterize the effect of several variables (park size, morphology of surrounding urban area, and wind speed) on the spreading of cool air.

Original Source

Order of the National Green Tribunal in the matter of Dr. Sudhir Dahiya Vs. M/s. J.M. Housing Ltd. & Others dated 22/12/2017 regarding violation of environment clearance (EC) conditions by J.M. Housing Ltd., Uttar Pradesh. Court issues notice to MoEF, UPPCB and lists the matter on 13/02/2018.

The built environment might be associated with development of obesity and related disorders. We examined whether neighbourhood exposure to fast-food outlets and physical activity facilities were associated with adiposity in UK adults.

Original Source

Order of the National Green Tribunal in the matter of Rear Admiral AP Revi IN (Retd.) Vs. Delhi Jal Board & Others dated 26/10/2017 regarding use of fresh water for gardening purpose in Vasant Kunj area of Delhi. NGT passes direction that DDA/MCD shall ensure that DJB shall supply treated sewage water for gardening at the fixed rate which will be the primary responsibility of the public authority. The residents, DDA/MCD and DJB are prohibited to use fresh water for gardening purpose.

The urban heat island effect (UHI) for inner land regions was investigated using satellite data, ground observations, and simulations with an Single-Layer Urban Canopy Parameterization (SLUCP) coupled into the regional Weather Research Forecasting model (WRF, http://wrf-model.org/index.php). Specifically, using the satellite-observed surface skin temperatures (Tskin), the intensity of the UHI was first compared for two inland cities (Xi’an City, China, and Oklahoma City (OKC)), which have different city populations and building densities.

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