Articles | Volume 25, issue 4
Hydrol. Earth Syst. Sci., 25, 2133–2158, 2021
https://doi.org/10.5194/hess-25-2133-2021

Special issue: Linking landscape organisation and hydrological functioning:...

Hydrol. Earth Syst. Sci., 25, 2133–2158, 2021
https://doi.org/10.5194/hess-25-2133-2021

Research article 20 Apr 2021

Research article | 20 Apr 2021

How catchment characteristics influence hydrological pathways and travel times in a boreal landscape

Elin Jutebring Sterte et al.

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Preprint under review for HESS
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Cited articles

Ala-aho, P., Tetzlaff, D., McNamara, J. P., Laudon, H., and Soulsby, C.: Using isotopes to constrain water flux and age estimates in snow-influenced catchments using the STARR (Spatially distributed Tracer-Aided Rainfall–Runoff) model, Hydrol. Earth Syst. Sci., 21, 5089–5110, https://doi.org/10.5194/hess-21-5089-2017, 2017. 
Ameli, A. A., Amvrosiadi, N., Grabs, T., Laudon, H., Creed, I. F., McDonnell, J. J., and Bishop, K.: Hillslope permeability architecture controls on subsurface transit time distribution and flow paths, J. Hydrol., 543, 17–30, https://doi.org/10.1016/j.jhydrol.2016.04.071, 2016. 
Aubin, I., Boisvert-Marsh, L., Kebli, H., McKenney, D., Pedlar, J., Lawrence, K., Hogg, E. H., Boulanger, Y., Gauthier, S., and Ste-Marie, C.: Tree vulnerability to climate change: improving exposure-based assessments using traits as indicators of sensitivity, Ecosphere, 9, e02108, https://doi.org/10.1002/ecs2.2108, 2018. 
Barnett, T. P., Adam, J. C., and Lettenmaier, D. P.: Potential impacts of a warming climate on water availability in snow-dominated regions, Nature, 438, 303, https://doi.org/10.1038/nature04141, 2005. 
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A numerical model was used to estimate annual and seasonal mean travel times across 14 long-term nested monitored catchments in the boreal region. The estimated travel times and young water fractions were consistent with observed variations of base cation concentration and stable water isotopes, δ18O. Soil type was the most important factor regulating the variation in mean travel times among sub-catchments, while the areal coverage of mires increased the young water fraction.