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

Smith, Aaron; Tetzlaff, Doerthe; Kleine, Lukas; Maneta, Marco; Soulsby, Chris

doi:https://doi.org/10.5194/hess-25-2239-2021

Articles | Volume 25, issue 4

https://doi.org/10.5194/hess-25-2239-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

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

https://doi.org/10.5194/hess-25-2239-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 4

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, Doerthe Tetzlaff, Lukas Kleine, Marco Maneta, and Chris Soulsby

Supplement

https://doi.org/10.5194/hess-25-2239-2021-supplement

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

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.