Toward an assessment of the hydrological components variability in green infrastructures: Pilot site of the Green Wave (Champs-sur-Marne)

The Green Wave (GW) site is located in the heart of the Paris-East Cluster for Science and Technology (Champs-sur-Marne, France). Initially designed on aesthetic criteria, this large wavy-form vegetated roof (1 ha) is a particularly interesting case study regarding hydrological and thermic issues. Since 2013, several measurement campaigns have been conducted during the Blue Green Dream project to investigate and better understand its hydrological behaviour. Rainfall, humidity, wind velocity, water content and temperature have been particularly studied. The data collected have been used to study the spatio-temporal variability of these variables. Results have shown they are all characterized by a non-gaussian distribution and a scaling behaviour. These results have justified the implementation of a continuous monitoring of the GW. It will serve to develop a specific model simulating its hydrological behaviour and able to assess green roof performances.