Deliverable 4.1: Report on the coupling between Multi-Hydro and Solène-Micoclimat and its application on a real site
Résumé
This deliverable presents the coupling operated between the Multi-Hydro rain-flow modeling platform and the Solène-Microclimat microclimate model. Methodological and numerical developments have made it possible to communicate these two models within the same simulation (in particular their representation of space, 2D for one and 3D for the other). Initially, Solène-Microclimat computes microclimatic fields (temperature, wind speed, radiation) which are then used by Multi-Hydro to estimate the evapotranspiration fields on the different types of surface, while taking into account their saturation state. These evapotranspiration fields (converted into latent heat flux) are then injected into Solène- Microclimat to modify the surface energy balance; and so on.
Implemented on the ENPC campus, this iterative coupling showed satisfactory results when the simulation results were compared to the experimental measurements carried out on the Green Wave. On the one hand, the evapotranspiration model included in Multi-Hydro has been validated using measurements made using the transpiration chamber. On the other hand, the surface temperatures of the vegetated surfaces were compared with those obtained during measurement campaigns. A difference of 1 or 2 degrees being observed throughout the day.
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202212_Livrable4.1_MH_SM_coupling_PiloteSite.pdf (10.35 Mo)
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