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| SYSTEM | FORECASTS | HINDCASTS | |||
|---|---|---|---|---|---|
| ENSEMBLE SIZE and START DATES | PRODUCTION | ENSEMBLE SIZE and START DATES | PRODUCTION | ||
| ECMWF | System 4 | 51 members start on the 1st | real-time | 15 members start on the 1st | fixed dataset |
| SEAS5 | 51 members start on the 1st | real-time | 25 members start on the 1st | fixed dataset | |
| Météo-France | System 5 (a) | 51 members 26 start around the 22thon the first Wednesday after the 19th of the previous month | real-time | 15 members start on the first Wednesday after the 19th of the previous month | fixed dataset |
| System 6 | 51 members 1 starts on the 1st | real-time | 25 members 1 starts on the 1st | fixed dataset | |
| Met Office | GloSea5 (b) | 2 members every day (c) | real-time | 7 members on the 1st | on-the-fly produced around 4-6 weeks in advance |
| CMCC | SPSv3 | 50 members start on the 1st | real-time | 40 members start on the 1st | fixed dataset |
| DWD | GCFS1 | 50 members start on the 1st | real-time | 30 members start on the 1st | fixed dataset |
...