Simulation of forest snow processes at Fraser with a energy balance based snow melt model (WEB-DHM-S)

抄録

A newly developed physically based distributed biosphere hydrological model with three layered energy balance snow melt module (WEB-DHM-S) has been implemented at point scale to evaluate the forest snow processes at Fraser Experiment Forest site (USA) for two snow seasons (2003-2005). Results illustrate that the model is capable of representing the sub-canopy snow depth and snow water equivalent well with average correlation coefficient of 0.9. Energy fluxes are analyzed in detail for above canopy and below canopy snow processes. It can be concluded that the radiation energy is dominant in above canopy where sensible heat flux is dominant in addition to the radiation energy in sub-canopy snow processes. Furthermore, the sensitivity runs against the interception capacity shows that the interception capacity plays a major role in canopy snow sublimation.