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Status on | Time range (forecasts and hindcasts) | Forecast initial conditions | Forecast ensemble size | Hindcast initial conditions | Hindcasts ensemble size | Hindcast period | Hindcast | Resolution of | Resolution of |
|---|---|---|---|---|---|---|---|---|---|
| ECMWF (ecmf) | 215 days | 1st of month | 51 members | 1st of month | 25 | 1981-2016 | fixed | TCO319/L91 Dynamics:TCO319 cubic octahedral grid Physics: O320 Gaussian grid (36 km) 91 levels in vertical, to 0.01hPa (80km) | 0.25° ORCA grid 75 levels in vertical |
| UKMO (egrr) | 215 days | each day of month | 2 members/day(4) | 1st, 9th, 17th, 25th of month | 7 members/start time | 1993-2016 | on-the-fly(1) | N216/L85 0.83° x 0.56° (~ 60km in mid-latitudes) 85 levels in vertical, to 85km | 0.25° ORCA grid 75 levels in vertical |
| Météo-France(3) (lfpw) | 7 calendar months | last and penultimate Thursday of previous month 1st of month | 25 members each 1 member | last and penultimate Thursday of previous month 1st of month | 12 members each 1 member | 1993-2018 | fixed | TL359/L137 (0.5°) 137 levels in vertical, to 0.01hPa | 0.25° ORCA grid 75 levels in vertical |
| DWD (edzw) | 6 calendar months | 1st of month | 50 members | 1st of month | 30 members | 1993-2019 | fixed | T127 (~100 km) 95 levels in vertical, to 0.01hPa | 0.4° TP04 grid 40 levels in vertical |
| CMCC (cmcc) | 6 calendar months | 1st of month | 50 members | 1st of month | 40 members | 1993-2016 | fixed | approx 0.5° lat-long 46 levels in vertical, to 0.2hPa | 0.25° ORCA grid 50 levels in vertical |
NCEP | 215 days | each day of month members initialised every 6 hours (at 0h, 6h, 12h and 18h UTC) | 4 members/day | every 5 days (5) members initialised every 6 hours (at 0h, 6h, 12h and 18h UTC) | 4 members/start date | 1993-2016 | fixed | T128/L64 (~ 1°) 64 levels in vertical, to 0.02hPa | 0.25° (equator) to 0.5° 40 levels in vertical |
| JMA (rjtd) | 215 days | every day of month | 5 members/day | 2 start dates lagged by 15 days (6) | 5 members/start date | 1993-2016 | fixed | TL319 (approx. 55km) 100 levels in vertical, to 0.01hPa | 0.25° tripolar grid 60 levels in vertical |
ECCC (cwao) (7) (component of CanSIPSv2.1) | 214 days | 1st of the month | 10 members | 1st of the month | 10 members | 1993-2020 | fixed | T63 (~2.8° lat-long) 35 levels in vertical, to 1hPa | ~0.94° (lat) 40 levels in vertical
|
ECCC (cwao) (7) (component of CanSIPSv2.1) | 214 days | 1st of the month | 10 members | 1st of the month | 10 members | 1993-2020 | fixed | ~1.1° lat-long (~110 km) 85 levels in vertical, to 0.1hPa | 1/3° (equator) to 1° 50 levels in vertical
|
NOTES
(1) For each real-time forecast start date, the associated hindcast data is produced and made available through the CDS at least one month in advance. The details about data availability can be found in "Summary of available data" page.
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The following table lists the values of 'system' keyword used in the CDS for on-the-fly hindcasts systems:
| Forecasting centre | Forecasting system name | Real-time forecast nominal start dates | CDS 'system' value | CDS 'model_id' (*) |
|---|---|---|---|---|
| UK MetOffice | GloSea6 | March 2021 to February 2022 | 600 | HadGEM3-GC3.2-v20200929 |
| March 2022 to February 2023 | 601 |
| March 2023 to February 2024 | 602 |
| From March 2024 | 603 |
(*) This model_id tag is used internally in some parts of the CDS infrastructure to label the seasonal forecast data. In particular data which is archived on netCDF format will use this labelling. Currently this only applies to ocean variables contained in the seasonal-monthly-ocean dataset.
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