Some issues encountered when transitioning from ROMS to CROCO

Hi,

Recently, I wanted to use CROCO to simulate some NBQ processes, but I have some confusion regarding the LBC settings in CROCO. In ROMS, my settings were as follows:

Lateral Boundary Conditions: NLM

Variable Grid West Edge South Edge East Edge North Edge


zeta 1 Chapman Imp Chapman Imp Chapman Imp Chapman Imp

ubar 1 Flather Clamped Flather Flather

vbar 1 Flather Clamped Flather Flather

u 1 Radiation Clamped Radiation Radiation

v 1 Radiation Clamped Radiation Radiation

temp 1 Radiation Clamped Radiation Radiation

salt 1 Radiation Clamped Radiation Radiation

dye_01 1 Radiation Clamped Radiation Radiation

tke 1 Gradient Gradient Gradient Gradient

In CROCO, the settings are as follows.

undef TIDES

define OBC_EAST

define OBC_WEST

define OBC_NORTH

define OBC_SOUTH

undef OBC_VOLCONS /for no tidal simulation/

define OBC_M2FLATHER /radiative OBC for barotropic velocities/

define OBC_M3ORLANSKI

define OBC_TORLANSKI

My question is how to set different open boundary conditions for different boundaries(i.e. the south edge)?