Refreezing

Water infiltrating in the high-flow domain is assumed to have a temperature close to 0 °C. As it percolates through the high-flow domain, it may partially refreeze depending on the soil temperature. The heat which is released from freezing in the high-flow domain causes melting of ice in the finest ice-filled pores, shifting the boundary between the low-flow domain and the ice-domain toward larger pores. Thus, refreezing of infiltrating water is treated as a redistribution, q_infreeze, from the high- to the low-flow domain:

                                                       (1.36)

where α_h is a heat transfer parameter, ∆z is the thickness of the layer, T is the temperature of the layer and L_f is the latent heat of freezing. See viewing function Refreezing.