When was the current long-range forecast system implemented? | July 2021 |
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Is it a coupled forecast system? | Yes |
Is it a Tier-2 forecast system? | No |
Atmospheric model resolution | T359L137 |
Ocean model (if applicable) | NEMO v3.6 , ORCA 1/4° grid, 75 model levels. Frequency of coupling is 3 hours |
Source of atmospheric initial conditions | ECMWF operational analysis |
Source of ocean initial conditions | Mercator-ocean analysis |
If Tier-2, what is the source of SST predictions? | N/A |
Hindcast period | 1993-2018 |
Ensemble size for the hindcasts | 25 members |
How is the hindcast ensemble configured? |
3 lagged initialization (12 runs, 12 runs, 1 run), each built with 1 atmospheric condition from ERA5 and 1 oceanic condition from Mercator analysis. For the 2 first initialization dates, ensemble generation by stochastic dynamics technique (Batté and Déqué 2016). The last initialization date begins the 1st of initialization month. |
Ensemble size for the forecast | 51 members |
How is the forecast ensemble configured? |
Same method as for the hindcast. 3 lagged initialization (25 runs, 25 runs, 1 run). |
Length of forecasts | 7 months |
Data format | GRIB 2 or ascii for digital data Gif for graphics |
What is the latest date predicted anomalies for the next month/season become available? | 13th of each month |
How are the forecast anomalies constructed? | Departures from the model climate estimated by the hindcast integrations |
URL where forecast(maps) are displayed | http://seasonal.meteo.fr/ |
Point of Contact |
JM Soubeyroux (Jean-Michel.soubeyroux@meteo.fr) Christine Quicot (christine.quicot@meteo.fr) Christian Viel (Christian.viel@meteo.fr) |