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A Lagrangian model for soil water dynamics during rainfall-driven conditions

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Academic year: 2017

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Figure 1. Advective/drift displacement of a particle k(θ) dt (a) and maximum diffusive displacement (D(θ )dt) 0.5 (b) plotted against soil water content for the sand on limestone in the Attert catchment and the Calcaric Regosol on loess in the Weiherbach c
Table 2. Characteristics of the numerical benchmarks: rainfall input P , initial condition θ ini , and simulation time t sim .
Table 3. Topsoil and the subsoil hydraulic properties at the central meteorological station in the Weiherbach catchment: saturated hydraulic conductivity k s , saturated and residual water contents θ s and θ r , α parameter, and shape parameter n.
Figure 4. Time series of soil moisture simulated with the particle model (PM) and the Richards solver for the sandy soil as 2-D colour plots for a simulated wetting event of 20 mm in 1 h and an additional 2 h of drainage (a and b), the convective rainfall
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