Listing of the steering parameters in alphabetical order

Parameter Name	Class	Type	Default Value	Explanation
adjusting_mixing_length	I	L	.F.	Near-surface adjustment of the mixing length to the Prandtl-layer law. Usually the mixing length in LES models lLES depends (as in PALM) on the grid size and is possibly restricted further in case of stable stratification and near the lower wall (see parameter wall_adjustment). With adjust_mixing_length = .T. the Prandtl' mixing length lPR = kappa * z/phi is calculated and the mixing length actually used in the model is set l = MIN (lLES, lPR). This usually gives a decrease of the mixing length at the bottom boundary and considers the fact that eddy sizes decrease in the vicinity of the wall. Warning: So far, there is no good experience with adjust_mixing_length = .T. ! With adjust_mixing_length = .T. and the Prandtl-layer being switched on (see prandtl_layer) '(u*) 2+neumann' should always be set as the lower boundary condition for the TKE (see bc_e_b), otherwise the near-surface value of the TKE is not in agreement with the Prandtl-layer law (Prandtl-layer law and Prandtl-Kolmogorov-Ansatz should provide the same value for Km). A warning is given, if this is not the case.
[=#<insert_parameter_name> <insert_parameter_name>]	<insert type>	<insert value>	<insert explanation>