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5. Forecast system and hindcasts
| Forecast frequency | Every day |
|---|---|
| Forecast ensemble size | Four/day |
| Hindcast years | 1981-2010 |
| Hindcast ensemble size | Four/ |
| start date | |
| Hindcast start dates | Every 5 days (see full list below) |
|---|---|
| On-the-fly or static hindcast set? | Static hindcast |
6. Other relevant information
The available hindcast start dates are grouped into each nominal start date as follows:
| Nominal Start Month | Dates used for C3S products | Additional dates | ||
|---|---|---|---|---|
| JANUARY | 1 January; 27, 22 and 17 December | 12, 7 and 2 December | ||
| FEBRUARY | 31, 26, 21 and 16 January | 11 and 6 January | ||
| MARCH | 25, 20, 15 and 10 February | 5 February | ||
| APRIL | 1 April; 27, 22 and 17 March | 12, 7 and 2 March | ||
| MAY | 1 May; 26, 21 and 16 April | 11 and 6 April | ||
| JUNE | 31, 26, 21 and 16 May | 11 and 6 May | ||
| JULY | 30, 25, 20 and 15 June | 10 and 5 June | ||
| AUGUST | 30, 25, 20 and 15 July | 10 and 5 July | ||
| SEPTEMBER | 29, 24, 19 and 14 August | 9 and 4 August | ||
| OCTOBER | 28, 23, 18 and 13 September | 8 and 3 September | ||
| NOVEMBER | 28, 23, 18 and 13 October | 8 and 3 October | ||
| Available Start Days | ||||
| January | 1, 6, 11, 16, 21, 26 and 31 | |||
| February | 5, 10, 15, 20 and 25 | |||
| March | 2, 7, 12, 17, 22 and 27 | |||
| April | 1, 6, 11, 16, 21 and 26 | |||
| May | 1, 6, 11, 16, 21 and 26 | |||
| June | 5, 10, 15, 20, 25 and 30 | |||
| July | 5, 10, 15, 20, 25 and 30 | |||
| August | 4, 9, 14, 19, 24 and 29 | |||
| September | 3, 8, 13, 18, 23 and 28 | |||
| October | 3, 8, 13, 18, 23 and 28 | |||
| November | 2, 7, 12, 17, 22 and 27 | |||
| December | 2, 7, 12, 17, 22 and 27 | DECEMBER | 27, 22, 17 and 12 November | 7 and 2 November |
7. Where to find more information
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