Author(s): Matti Lepparanta; Yu Yang; Zhijun Li; Bin Cheng
Linked Author(s): Yu Yang, Zhijun Li
Keywords: No Keywords
Abstract: A seasonal lake ice model is employed to examine to impact of climate variability on lake ice phenology, thickness and ice coverage. The freezing date is related to fall air temperature with correlation time scale depending on the lake depth. Ice growth depends primarily on air temperature and snow accumulation. Ice breakup depends on the maximum ice and snow thicknesses, solar radiation transfer, and air temperature; the onset of melting is the primary question. Lake ice models have the heat conduction law in their core, and heat is transferred through the boundaries in the ice sheet. Analytical or semi-analytical models are used for scaling question, while numerical models with congelation ice, snow-ice and snow layers serve for detailed process studies. Research has been made to model the deterioration of the ice sheet properly with internal melting, ice breakage and drifting. Climate variations also bring qualitative changes to lake ice seasons by moving boundaries of ice climate zones.
Year: 2014