| When was the current long-range forecast system implemented? | November 2020 |
|---|---|
| Is it a coupled forecast system? | Yes, ECHAM-6.3.05p2, MPIOM-1.6.3p4 plus submodels |
| Is it a Tier-2 forecast system? | No |
| Atmospheric model resolution | T127, spectral resolution corresponding to 0.9°x0.9° or~100 km on regular Gaussian grid |
| Ocean model (if applicable) | TP04 corresponding to 0.4° on a tripolar grid |
| Source of atmospheric initial conditions | ECMWF ERA-5 (for hindcasts), ECMWF ERA5 T analyses (for forecasts) |
| Source of ocean initial conditions | ECMWF ORA-S5 (both hindcast/forecasts ) |
| If Tier-2, what is the source of SST predictions? | N/A |
| Hindcast period | 1990-2019 |
| Ensemble size for the hindcasts | 30 members |
| How is the hindcast ensemble configured? | Bred vectors in the ocean for 3D temperature and salinity & perturbed physical parameters in the atmosphere |
| Ensemble size for the forecast | 50 |
| How is the forecast ensemble configured? | Bred vectors in the ocean for 3D temperature and salinity & perturbed physical parameters in the atmosphere |
| Length of forecasts | 6 months |
| Data format | Netcdf, but GRIB 1 one also be possible |
| What is the latest date predicted anomalies for the next month/season become available? | 8th of each month |
| How are the forecast anomalies constructed? | Departures from the model climate estimated by the hindcast integrations |
| URL where forecast are displayed | www./dwd.de/seasonalforecasts |
| Point of Contact | jahreszeiten.vorhersage@dwd.de kristina.froehlich@dwd.de andreas.paxian@dwd.de katharina.isensee@dwd.de |
