6.3 Formulation of the Boundary Conditions

The ODE system (6.34) has to be completed with appropriate BCs. The number of required BCs depends on the rank of the ODE system that is in our case N_ODE since we have a first order ODE system. The following considerations are valid for both boundary points. We will first derive conditions for the upper boundary point at z = 0 and then extend the results to the lower boundary point at z = h.