1. General information
2. Objectives of the intervention
Goals of the intervention
- Testing water infiltration capacities and evaporation on green roofs under varying conditions to provide results for the research project and improve rainwater management in densely built-up areas (Ref. 3 and 4)
- Create reality-based process-models for water balance dimensions based on meso and micro-scale simulations and define standards for the water balance in densely built-up areas as a base for planning (Ref. 2)
Goals specific to the wider research project:
- Analyze the impacts and resilience of rainwater management techniques in the face of a changing climate (Ref. 2)
- Develop efficient planning instruments for sustainable rainwater management in communities and planning bureaus (Ref. 1)
- Investigating the acceptance of rainwater management measures and collect valid data concerning costs and operation of the latter (Ref. 2)
- Create reality-based process-models for water balance dimensions based on meso and micro-scale simulations and define standards for the water balance in densely built-up areas as a base for planning (Ref. 2)
Goals specific to the wider research project:
- Analyze the impacts and resilience of rainwater management techniques in the face of a changing climate (Ref. 2)
- Develop efficient planning instruments for sustainable rainwater management in communities and planning bureaus (Ref. 1)
- Investigating the acceptance of rainwater management measures and collect valid data concerning costs and operation of the latter (Ref. 2)
Quantitative targets
No quantiative targets found.
Monitoring indicators defined
Climate data, soil characteristics, flow conditions of the rainwater, retention potential of different pavings and greened surfaces (based on water level change), substrate type, layer thickness of the substrate (Ref. 3 and 6); Modelling of the hydrological processes based on: drainage, soil humidity, precipitation, radiation (relevance for evaporation), temperature, atmospheric humidity, wind speed (Ref. 2 and 6).
Sustainability challenge(s) addressed
Climate change adaptation: What were the goals of the NBS?
Climate change adaptation: What activities are implemented to realize the conservation goals and targets?
Implementation activities
As a model city for the project "water balance of water bodies in densely built-up areas" the university of Münster created testing sites on campus in addition to other test sites for trough-trench systems (greened infiltration interventions and underground stormwater storage) and permeable paving in the city. They consist of two 80 sqm green roofs (two-layered system with 6cm substrate and a drainage plate) vegetated with extensive green (Sedum species of seeds and herbs) and ten 3 sqm green roofs with the same structure but the varying thickness of the substrate layer (6cm, 10cm and 15cm) and substrate type (foamed clay mixture and clay bricks mixture). With high-resolution measurement series, researchers assess the process behaviour of theses green roofs concerning their retention potential under these variations and varying climatic conditions. The results inform the development of a micro-scale process model and shall improve rainwater management in cities (Ref. 1, 2, 3, 4 and 6).
3. NBS domains, ES and scale
4. Governance and financing
5. Innovation
Type of innovation
Please specify technological innovation
Through testing the infiltration capacity of different surface areas, such as green roofs with varying substrate layer thickness and substrate types, as well as trough-trench systems (combination of greened infiltration interventions and underground stormater storage) and types of permeable paving, the output of the projects is a product innovation concerning stormwater management installations. The focus is on finding the most efficient with regards to infiltration capacity, cost-efffective and publicly accepted solution (Ref. 1, 2 and 3)
Novelty level of the innovation
Please specify novelty level of the innovation
Unknown
Replicability/Transferability
Please specify Replicability/Transferability
The research project will provide a major contribution to water management in densely built areas both methodologically as well as content-wise. The produced results will be accessible for everybody on the programme website from 2018 onwards. The intention is that it will be consulted by municipalities and service providers for follow-up projects in their own cities and villages (Ref. 1).
