| The Poseidon Ocean Model is a generalized
coordinate ocean circulation model
Features of Poseidon:
- Non-Boussinesq dynamics
- Finite Volume numerics
- Arbitrary orthogonal curviliear horizontal coordinates
- Generalized vertical coordinates
- Quasi-Isopycnal/Pressure hybrid
- Mixed Layer/Buffer Zone/Isopycnal hybrid
- B- or C- grid. (Run-time configuration)
- Reduced gravity or full barotropic (Run-time option)
- Split-explicit barotropic treatment (Hallberg, 1997)
- ALE technique for splitting horizontal and vertical coordinates
- Implicit vertical diffusion
- Fortran-95 modularized
- Uses GEMS parallelization libraries and message-passing paradigm
for efficient execution on a variety of platforms:
- Linux 1cpu (NAG f95)
- Mac OSX (NAG f95 or IBM XLF8.1)
- IBM SP cluster (NCAR blackforest and bluesky)
- Compaq Alpha (GSFC halem)
- SGI Altix 3700 (GMU SCS)
- Vector-invariant formulation with 2nd or 4th order advection of potential
vorticity
- Jacobian form for pressure term (Lin,
1997)
- KPP-like or bulk turbulent mixed layers
- Run-time selectable tracer advection schemes
- 2nd, 3rd or 4th order advection
- Arbitrary bottom topography
- Minimum ocean depth of millimeters
- No smoothing required
- Any number of passive tracers
- Variable short wave optical properties
- Compile-time selection of equations of state
- UNESCO
- Wright
- Linear
- Quadratic
- Roll-your-own
- Smagorinsky Laplacian or Biharmonic viscosity (Griffies-Hallberg,
2000)
- Shapiro filter for mass, momentum or tracers
- (Mass filter generates horizontal mass fluxes as bolus fluxes)
- Shapiro filter for null mode removal on B-grid
- Open upper boundary conditions.
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