damp_opt = 0, ; upper level damping flag
0 = without damping
1 = with diffusive damping, maybe used for real-data cases
(dampcoef nondimensional ~0.01-0.1)
2 = with Rayleigh damping
(dampcoef inverse time scale [1/s]
e.g. .003; idealized case only
not for real-data cases)
3 = with w-Rayleigh damping
(dampcoef inverse time scale [1/s]
e.g. .05;
for real-data cases)
dampcoef (max_dom) = 0., ; damping coefficient (see above)
zdamp (max_dom) = 5000., ; damping depth (m) from model top
w_damping = 0, ; vertical velocity damping flag (for operational use)
0 = without damping
1 = with damping