| 1830 | 1830 | If a value is assigned to this parameter, the internal two-dimensional surface heat flux field '''shf''' is initialized with the value of '''surface_heatflux''' as the bottom (horizontally homogeneous) boundary condition for the temperature equation. This additionally requires that a Neumann condition must be used for the potential temperature (see [#bc_pt_b bc_pt_b]), because otherwise the resolved scale may contribute to the surface flux so that a constant value cannot be guaranteed. Also, changes of the surface temperature (see [#pt_surface_initial_change pt_surface_initial_change]) are not allowed. The parameter [#random_heatflux random_heatflux] can be used to impose random perturbations on the (homogeneous) surface heat flux field '''shf'''.\\\\ |
