Soil Heat Processes > Soil Heat Flow > Theory > Upper boundary condition
Soil surface temperature – soil partially covered with snow

During conditions when the snow depth is below a certain value ∆zcov the soil surface temperature will be calculated as a weighted sum between the calculated temperature below the snow and an estimated soil surface temperature from bare areas. The mean soil surface temperature, Ts, is then given by:

                                           (1.8)

where ∆zsnow is the snow depth.