GWSWEX v1.0: a dual-solver 1D unsaturated zone model for mass-conservative groundwater recharge and runoff computation in distributed hydrological modelling
Abstract. Faithful numerical representation of the coupled groundwater (GW)–unsaturated-zone (UZ)–surface-water (SW) dynamics at regional scales is constrained by the structural extremes currently available: fully three-dimensional Richards-equation solvers resolve variably saturated flow rigorously but at a per-evalua...