For all cases DT=20s ndtfast=20 with EAST, WEST, and SOUTH boundaries treated
the same. NORTH boundary is a solid wall. The following cpp options were used
for each of the FSCLAMPED open boundary cases.
Code: Select all
ATM_PRESS Impose atmospheric pressure onto sea surface. ANA_BSFLUX Analytical kinematic bottom salinity flux. ANA_BTFLUX Analytical kinematic bottom temperature flux. ANA_RAIN Analytical rain fall rate. ANA_SSFLUX Analytical kinematic surface salinity flux. ASSUMED_SHAPE Using assumed-shape arrays. BULK_FLUXES Surface bulk fluxes parametererization. CURVGRID Orthogonal curvilinear grid. DJ_GRADPS Parabolic Splines density Jacobian (Shchepetkin, 2002). DOUBLE_PRECISION Double precision arithmetic. KANTHA_CLAYSON Kantha and Clayson stability function formulation. LONGWAVE_OUT Compute outgoing longwave radiation internally. MASKING Land/Sea masking. MPI MPI distributed-memory configuration. MY25_MIXING Mellor/Yamada Level-2.5 mixing closure. NONLINEAR Nonlinear Model. NONLIN_EOS Nonlinear Equation of State for seawater. N2S2_HORAVG Horizontal smoothing of buoyancy and shear. PERFECT_RESTART Processing perfect restart variables. POWER_LAW Power-law shape time-averaging barotropic filter. PROFILE Time profiling activated . K_GSCHEME Third-order upstream bias advection of TKE fields. RADIATION_2D Use tangential phase speed in radiation conditions. !RST_SINGLE Double precision fields in restart NetCDF file. SALINITY Using salinity. SOLVE3D Solving 3D Primitive Equations. SPLINES Conservative parabolic spline reconstruction. STATIONS Writing out station data. TS_U3HADVECTION Third-order upstream bias horizontal advection of tracers. TS_SVADVECTION Parabolic splines vertical advection of tracers. TS_NATURAL Advective open boundary condition for tracers. TS_PSOURCE Tracers point sources and sinks. UV_ADV Advection of momentum. UV_COR Coriolis term. UV_U3HADVECTION Third-order upstream bias advection of momentum. UV_SADVECTION Parabolic splines vertical advection of momentum. UV_LOGDRAG Logarithmic bottom stress. Z0_SVAR Variable Bottom Roughness. MET_OUT (Pair,Uair,Vair) station/history file output. UV_PSOURCE Mass point sources and sinks. VAR_RHO_2D Variable density barotropic mode. Case 1: Model blow-up after order 2 to 2.5 days ~15000 time steps FSOBC_REDUCED Using free-surface data in reduced physics condtions FSCLAMPED free-surface, Clamped condition. M2REDUCED 2D momentum, reduced-physics condition. M3RADIATION 3D momentum, radiation condition. TNUDGING tracers, passive/active outflow/inflow. TRADIATION tracers, radiation condition. Case 2: Model blow-up after order 1000 time steps FSCLAMPED free-surface, Clamped condition. M2GRADIENT 2D momentum, gradient condition. M3RADIATION 3D momentum, radiation condition. TNUDGING tracers, passive/active outflow/inflow. TRADIATION tracers, radiation condition. Case 3: Model blow-up after order 1000 time steps FSCLAMPED free-surface, Clamped condition. M2GRADIENT 2D momentum, gradient condition. M3GRADIENT 3D momentum, gradient condition. TNUDGING tracers, passive/active outflow/inflow. TRADIATION tracers, radiation condition.
cppdef options using the following OBCS:
However, the water level signals near the boundary differed from the specified
water level signals significantly in the C&D Canal along the WEST open boundary
and to correct this I sought to investigate the FSCLAMPED boundary condition.
Any advice or suggestions would be much appreciated.