Global Ocean Forecasting System (GOFS)
| GOFS 3.1 | GOFS 3.0 | |
|---|---|---|
| HYCOM source code | 2.2.99DHMTi | 2.2.19 |
| Equation of state | 17-term | 7-term |
| Layers | 41, nine additional layers near the surface, top 14 layers are always sigma-z so that water shallower than 84 m is always in fixed coordinates | 32 |
| Surface wind forcing | Reads in 10 m wind velocities and calculates wind stress using HYCOM SST and also taking into account HYCOM surface currents | Reads in wind stress that is calculated off-line using bulk parameterization |
| Surface radiation forcing | Uses downward shortwave and longwave radiation | Uses net shortwave and longwave radiation |
| Ocean turbidity | Based on monthly chlorophyll climatology | Based on photosynthetically available radiation |
| Initialization | From GDEM4 climatology | From Polar Science Center Hydrography |
| SSS relaxation | Weaker in GOFS 3.1 and turned off completely when HYCOM SSS is more than 0.5 psu away from climatology | Stronger than GOFS 3.1 |
| Ice model | Full two-way coupling with the Community Ice CodE (CICE) | Energy-loan ice model |
| Downward projection | ISOP | MODAS |