Soil freezing in LSPM SVAT scheme

Soil moisture changes are generally due to external forcing (precipitation, evaporation etc.) as well as internal forcing (gravitational force, capillarity, transpiration etc.). Soil water freezing/thawing effects must be taken into account in modeling energy and hydrological surface layer balance where air temperature goes below 0 °C for hours or even days. The present work is devoted to the numerical modelling of the water phase change in the soil by means of the soil-atmosphere-vegetation interaction model LSPM (Land Surface Process Model). Three different parameterizations were implemented into LSPM and comparison between simulations and observations was discussed.