Numerical assessment of evapotranspiration covers in cold climates
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Date
2018-12-13
Authors
Wang, Xiang
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Abstract
The ET cover system was identified to be effective in semiarid regions in the US but was not assessed in cold regions such as the Canadian Prairie. In this study, HYDRUS-1D, GeoStudio SEEP/W and TEMP/W, and SABAE-HW were selected to assess the ET cover performance in cold climates. The simulated soil moisture showed that HYDRUS-1D had the best agreement of measured soil moisture, but SABAE-HW showed more reasonable soil moisture behavior during freeze-thaw events. Both HYDRUS-1D and GeoStudio were missing the capability to simulate the frozen soil behavior during the freeze-thaw events. SABAE-HW was the only model that was able to represent the unfrozen water content during frozen conditions but was unable to estimate any leaching fluxes during winter. The soil hydraulic properties in SABAE-HW were rudimental represented by the soil composition, which limited the simulation ability for the complex situation of the landfill.
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Keywords
Evapotranspiration covers, Vadose zone, Cold climates
Citation
Ground Water