Speaker
Description
Nature-based solutions are increasingly being implemented to increased sustainability and resiliency of urban spaces. Amongst the solutions available for buildings, green roofs are probably the most used and studied. Within the range of benefits associated with green roofs, several studies addressed the carbon emissions associated with the: i) direct CO2 exchanges between the plants and substrate and the atmosphere; and ii) indirect emissions reduction from cooling and heating energy savings. However, there is also the potential for indirect CO2 emissions savings from rainwater retention. Most old cities have, even if only partially, combined drainage networks. Consequently, some rainwater is conveyed to the wastewater treatment plants, particularly in the high frequency and low intensity events for which the combined sewer overflows do not discharge. The present communication presents an estimate of the potential carbon emission savings associated with green roofs in the city of Lisbon.
| Topics | Sustainable resilience of systems in the built environment, Smart cities, Green technology for civil engineering Green buildings |
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| Keywords | green roofs, rainwater retention, wastewater treatment, energy consumption, carbon emissions |
