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| Nominal start date | ECMWF | Météo-France | Met Office(a) | DWD | CMCC | NCEP | JMA | ECCC | BOM | Nominal start date | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| System 4 (system=4) | SEAS5 (system=5) | SEAS5 (system=51)(b) | System 5 (system=5) | System 6 (system=6) | System 7 (system=7) | System 8 (system=8) | System 9 (system=9) | GloSea5-GC2 (system=12) | GloSea5-GC2 (system=13) | GloSea5-GC2-LI (system=14) | GloSea5-GC2-LI (system=15) | GloSea6 (system=600) | GloSea6 (system=601) | GloSea6 | GloSea6 | GloSea6 (system=604) | GCFS2.0 (system=2) | GCFS2.1 (system=21) | GCFS2.2 (system=22) | SPSv3 (system=3) | SPSv3.5 (system=35) | CFSv2 (system=2) | CPS2 (system=2) | CPS3 (system=3) | GEM-NEMO (system=1) | CanCM4i (system=2) | GEM5-NEMO (system=3) | CanESM5.1p1bc (system=4) | GEM5.2-NEMO (system=5) | ACCESS-S2 (system=2) | ||
| January |  |  | | | | | | | (c) | (c) | (c) | (c) | (c) | (c) | (c) | (c) | | | | | | | | | | | | | | | | January |
| February | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | February |
| March | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March |
| April | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | April |
| May | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | May |
| June | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * | June |
| July | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | July |
| August | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | August |
| September | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September |
| October | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | October |
| November | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | November |
| December | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December |
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