Dear Colleagues,

In high density urban areas, land space is very limited and precious. There are various needs to be accommodated within such limited space such as dwelling, leisure, recreation, economic activities, transportation and so on. In the last decade, driven by the need to cope with the urban heat and cool down the city, urban planners and designers are looking at ways to incorporate greenery into the buildings due to the limited land to plant more trees. As a result, rooftop garden becomes a common feature in some developed cities. “Sustainable cities” has also become a theme for city development with an aim to provide high quality living for its residents and to have resilience from external factors such as climate change, and so on. Energy security has driven the needs to find spaces and explore the solar availability in cities to generate electricity through distributed energy resources including renewables, such as solar PV and micro turbines. To build resilience on food supply, residents and local urban farmers are encouraged to grow their food close to their communities. Building rooftop is, perhaps, the major remaining open space available to address the above sustainable-driven needs.

This special issue aims to gather and collate various inititiatives, ideas and research works in the sustainable use of rooftop use in cities. It can cover, but not limited to technology advancement, economical benefit, social benefit and environmental benefit.

Dr. Steve Kardinal Jusuf
Dr. Soh Chew Beng
Dr. Elsa Feng
Dr. Szu-Cheng Chien
Guest Editors

Manuscript Submission Information

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• Urban rooftops
• Sustainable and creative ideas
• Multi-dimension benefits
• Experiment studies
• Case studies