Upper surface and bottom layers
| code | upper surface | tides? | benthic layer? | 
|---|---|---|---|
| AWI | rigid lid, streamfunction | no | no | 
| GSFC | explicit free surface | no | yes, not well resolved | 
| DRAKKAR | Free surface | no | no | 
| ICMMG | rigid lid, streamfunction | no | 
 | 
| LANL | implicit free surface | no | no | 
| LU | rigid lid, streamfunction | no | yes | 
| NERSC | explicit free surface | no | no | 
| NPS | implicit free surface | no | no | 
| NYU | explicit free surface | no | 
 | 
| POL | explicit nonlinear free surface | no | Campin and Goosse (1999) | 
| FEMAO1 | linearized implicit free surface with volume, T and S conservation | yes | no | 
| FEMAO2 | linearized implicit free surface with volume, T and S conservation | no | no | 
| INMOM | linear / implicit free surface | no | no | 
| RCO | explicit free surface | no | no | 
| UCL | free surface | no | parametric | 
| UW | rigid lid, streamfunction | no | 
 | 
| DAL | 
 | 
 | 
 | 
| FSU | 
 | 
 | 
 | 
| GFDL | 
 | 
 | 
 | 
| IARC-A | explicit free surface | no | no | 
| IARC-B | explicit free surface | no | no | 
| ECCO2 | implicit free surface | no | no | 
| MIT | 
 | 
 | 
 | 
| NCAR | 
 | 
 | 
 | 
| NPI | 
 | 
 | 
 | 
| UMASD | 
 | 
 | 
 | 
| NOCS/ORCA25 | linear free surface | no | Parametric (1000 m2/s) | 
| MCGU | 
 | 
 | 
 | 
| LOCEAN | Free surface | no | no | 
| IOS | rigid lid, streamfunction | parametric | yes |