Articles | Volume 25, issue 4
Hydrol. Earth Syst. Sci., 25, 2239–2259, 2021
https://doi.org/10.5194/hess-25-2239-2021

Special issue: Water, isotope and solute fluxes in the soil–plant–atmosphere...

Hydrol. Earth Syst. Sci., 25, 2239–2259, 2021
https://doi.org/10.5194/hess-25-2239-2021

Research article 26 Apr 2021

Research article | 26 Apr 2021

Quantifying the effects of land use and model scale on water partitioning and water ages using tracer-aided ecohydrological models

Aaron Smith et al.

Model code and software

Ech2o Tracer ech2o_iso IGB - Institute of Freshwater Ecology and Inland Fisheries http://bitbucket.igb-berlin.de:7990/users/ech2o/repos/ech2o_iso/browse

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Short summary
We used a tracer-aided ecohydrological model on a mixed land use catchment in northeastern Germany to quantify water flux–storage–age interactions at four model grid resolutions. The model's ability to reproduce spatio-temporal flux–storage–age interactions decreases with increasing model grid sizes. Similarly, larger model grids showed vegetation-influenced changes in blue and green water partitioning. Simulations reveal the value of measured soil and stream isotopes for model calibration.