Articles | Volume 21, issue 3
Research article
24 Mar 2017
Research article |  | 24 Mar 2017

Modelling liquid water transport in snow under rain-on-snow conditions – considering preferential flow

Sebastian Würzer, Nander Wever, Roman Juras, Michael Lehning, and Tobias Jonas

Data sets

Meteorological and snowpack measurements from Weissfluhjoch WSL Institute for Snow and Avalanche Research SLF

Model code and software

An 18-yr long (1993–2011) snow and meteorological dataset from a mid-altitude mountain site (Col de Porte, France, 1325 m alt.) for driving and evaluating snowpack models S. Morin, Y. Lejeune, B. Lesaffre, J.-M. Panel, D. Poncet, P. David, and M. Sudul

Short summary
We discuss a dual-domain water transport model in a physics-based snowpack model to account for preferential flow (PF) in addition to matrix flow. So far no operationally used snow model has explicitly accounted for PF. The new approach is compared to existing water transport models and validated against in situ data from sprinkling and natural rain-on-snow (ROS) events. Our work demonstrates the benefit of considering PF in modelling hourly snowpack runoff, especially during ROS conditions.