Articles | Volume 18, issue 12
https://doi.org/10.5194/hess-18-5169-2014
https://doi.org/10.5194/hess-18-5169-2014
Technical note
 | 
12 Dec 2014
Technical note |  | 12 Dec 2014

Technical Note: Reducing the spin-up time of integrated surface water–groundwater models

H. Ajami, J. P. Evans, M. F. McCabe, and S. Stisen

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Cited articles

Ajami, H., McCabe, M. F., Evans, J. P., and Stisen, S.: Assessing the impact of model spin-up on surface water–groundwater interactions using an integrated hydrologic model, Water Resour. Res., 50, 2636–2656, https://doi.org/10.1002/2013WR014258, 2014.
Ashby, S. F. and Falgout, R. D.: A parallel multigrid preconditioned conjugate gradient algorithm for groundwater flow simulations, Nucl. Sci. Eng., 124, 145–159, 1996.
Berthet, L., Andréassian, V., Perrin, C., and Javelle, P.: How crucial is it to account for the antecedent moisture conditions in flood forecasting? Comparison of event-based and continuous approaches on 178 catchments, Hydrol. Earth Syst. Sci., 13, 819–831, https://doi.org/10.5194/hess-13-819-2009, 2009.
Cloke, H. L., Renaud, J. P., Claxton, A. J., McDonnell, J. J., Anderson, M. G., Blake, J. R., and Bates, P. D.: The effect of model configuration on modelled hillslope–riparian interactions, J. Hydrol., 279, 167–181, https://doi.org/10.1016/S0022-1694(03)00177-X, 2003.
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Short summary
A new hybrid approach was developed to reduce the computational burden of the spin-up procedure by using a combination of model simulations and an empirical depth-to-water table function. Results illustrate that the hybrid approach reduced the spin-up period required for an integrated groundwater--surface water--land surface model (ParFlow.CLM) by up to 50%. The methodology is applicable to other coupled or integrated modeling frameworks when initialization from an equilibrium state is required.