Conference Agenda
Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
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Daily Overview |
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SES 1-2-1: Modelling of Blue-Green Infrastructure / NBS / SUDS / LID 1 Location: HSB0 Session Chair: Virginia Stovin Session Chair: Fabian Funke | |
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11:15am - 11:30am
Simulation of evapotranspiration in green stormwater infrastructure using a hydrological model: seasonal and annual evaluations of different configurations 1: Cerema, Equipe TEAM, 12 rue Teisserenc de Bort, F 78190, Trappes, France; 2: Leesu, Ecole des Ponts, Université Paris Est Creteil, F 77455, Marne-la-Vallee, France Evapotranspiration (ET) plays a critical role in green stormwater infrastructures (GSI) management by reducing runoff and providing cooling benefit. This study quantitatively assesses seasonal and annual ET by simulating GSI performance including four experimental green roofs (GR) and one rain garden (RG) using the Hydrus-1D hydrological model. The model was calibrated using drainage and ET data from the GRs and the RG respectively. Long term simulations (six years for GRs and two years for the RG) revealed that GRs with a 15 cm substrate planted with sedum and/or grasses achieved interannual ET rates exceeding 50% of precipitation. In contrast, configurations with a 3 cm substrate, either bare or planted with sedum, exhibited ET rates ranging from 30 to 44% of precipitation. Similarly, the rain garden, with an impluvium four times its area, 80 cm silty clay substrate, herbaceous vegetation, and total drainage without internal water storage, demonstrated an annual ET equivalent to 35% of precipitation inputs. | |