| When was the current long-range forecast system implemented? | System name: SPS3.5 Implemented: October 2020 |
|---|---|
| Is it a coupled forecast system? | Yes |
| Is it a Tier-2 forecast system? | No |
| Atmospheric model resolution | ½° approximately on a cube-sphere quasi-regular grid |
| Ocean model (if applicable) | NEMO3.4, ¼° on a nearly isotropic, curvilinear, tri-polar grid. |
| Source of atmospheric initial conditions | ECMWF |
| Source of ocean initial conditions | Global Ocean 3D-VAR Data Assimilation System (C-GLORS) |
| If Tier-2, what is the source of SST predictions? | N/A |
| Hindcast period | 24 years: 1993-2016 |
| Ensemble size for the hindcasts | 40 members |
| How is the hindcast ensemble configured? | Chosen at random among 120 combinations of 10 atmosphere ICs (time lagging at 12h interval), 3 land ICs (forced during previous month by ECMWF and NCEP analyses and mean of the two) and 4 ocean ICs (perturbing ocean observations) |
| Ensemble size for the forecast | 50 members |
| How is the forecast ensemble configured? | Chosen at random among 270 combinations of 10 atmosphere ICs (time lagging at 12h intervals), 3 land ICs (forced during previous month by ECMWF and NCEP analyses and mean of the two) and 9 ocean ICs (perturbing ocean observations) |
| Length of forecasts | 6 months |
| Data format | NetCDF |
| What is the latest date predicted anomalies for the next month/season become available? | 10th of the month |
| How are the forecast anomalies constructed? | By subtracting the 24year hindcast mean |
| URL where forecast are displayed | https://sps.cmcc.it/ |
| Point of Contact |
Andrea Borrelli (andrea.borrelli@cmcc.it) |
