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- Title
Improving the snow physics of WEB-DHM and its point evaluation at two SnowMIP alpine sites.
- Authors
Shrestha, M.; Wang, L.; Koike, T.; Xue, Y.; Hirabayashi, Y.
- Abstract
The snow physics of a distributed biosphere hydrological model, referred to as the Water and Energy Budget based Distributed Hydrological Model (WEB-DHM) is improved by incorporating the three-layer physically based energy balance snowmelt model of Simplified Simple Biosphere 3 (SSiB3) and the Biosphere-Atmosphere Transfer Scheme (BATS) albedo scheme. WEB-DHM with improved snow physics (WEBDHM- S) can simulate the variability of snow density, snow depth and snow water equivalent, liquid water and ice content in each layer, prognostic snow albedo, diurnal variation in snow surface temperature, thermal heat due to conduction and liquid water retention. The performance of WEB-DHM-S is evaluated at two alpine sites of the Snow Model Intercomparison Project with different climate characteristics: Col de Porte in France and Weissfluhjoch in Switzerland. The simulation results of the snow depth, snow water equivalent, surface temperature, snow albedo and snowmelt runoff reveal that WEB-DHM-S is capable of simulating the internal snow process better than the original WEB-DHM, with the root mean square error and bias error being remarkably reduced. Although WEB-DHM-S is only evaluated at a point scale for the simulation of snow processes, this study provides a benchmark for the application of WEB-DHM-S in cold regions in the assessment of the basin-scale snow water equivalent and seasonal discharge simulation for water resources management.
- Subjects
FRANCE; SWITZERLAND; SNOWMELT; SNOW density; SNOW; COLD regions
- Publication
Hydrology & Earth System Sciences Discussions, 2010, Vol 7, Issue 3, p3481
- ISSN
1812-2108
- Publication type
Article
- DOI
10.5194/hessd-7-3481-2010