Articles | Volume 20, issue 12
Hydrol. Earth Syst. Sci., 20, 4963–4981, 2016
https://doi.org/10.5194/hess-20-4963-2016
Hydrol. Earth Syst. Sci., 20, 4963–4981, 2016
https://doi.org/10.5194/hess-20-4963-2016

Research article 16 Dec 2016

Research article | 16 Dec 2016

Estimating catchment-scale groundwater dynamics from recession analysis – enhanced constraining of hydrological models

Thomas Skaugen and Zelalem Mengistu

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Short summary
This paper introduces a new formulation of hydrological subsurface dynamics for hydrological models. The frequency distribution of the fluctuations of the catchment-scale subsurface storage is estimated from observed recessions and the mean annual runoff. The new formulation of the subsurface has been tested for 73 Norwegian catchments and is found to perform as well as the previous calibrated subsurface formulation. Recessions are better simulated using the new formulation.