NUMERICAL MODELING OF THE HEAT AND MOISTURE TRANSPORT IN A LAKE—SOIL SYSTEM

V. M. Stepanenko and V. N. Lykosov

A one-dimensional thermodynamic model of a shallow reservoir describing the heat and moisture transport in the underlying soil layer is constructed. The model simulates seasonal variations and year-to-year variability of thermal and hydrological regimes of the lake—soil system, including the ice and snow cover formation and evolution. Several numerical experiments are performed with long-term meteorological observations used as input data. Comparison of numerical results with available observational data has shown that the model satisfactorily reproduces thermal and hydrological regimes of shallow lakes in western Siberia and Yakutia.

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