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Real-time forecasts

Nominal start dates

ECMWF

Météo-France

Met Office(a)DWDCMCCNCEP
System 4SEAS5System 5System 6System7system=12system=13system=14GCFS2.0SPSv3CFSv2
September 2017 - October 2017(tick)(error)(tick)(error)(error)(tick)(error)(error)(error)(error)(error)
November 2017 - January 2018(error)(tick)(tick)(error)(error)(tick)(error)(error)(error)(error)(error)
February 2018 - April 2018(error)(tick)(tick)(error)(error)(tick)(1)(error)(error)(error)(error)(error)
May 2018 - October 2018(error)(tick)(tick)(error)(error)(error)(tick)(error)(error)(error)(error)
November 2018 - April 2019(error)(tick)(error)(tick)(error)(error)(tick)(error)(tick)(tick)(3)(error)
May 2019 - September 2019(error)(tick)(error)(tick)(error)(error)(error)(tick)(2)(tick)(tick)(error)
October 2019 - present(error)(tick)(error)(error)(tick)(error)(error)(tick)(tick)(tick)(tick)

(1) Upgrade on data provision: changes in set of parameters available, see column noted with 'C3S-0.1 netcdf' in this link. Data deficiencies fixed, see known issues D2 and D3.
(2) Upgrade on model version: GloSea5-GC2-LI. Data deficiencies fixed, see known issue D9.
(3) See description of data issue number 2.

Hindcasts

Nominal start dateECMWFMétéo-FranceMet Office(a)DWDCMCCNCEP
System 4SEAS5System 5System 6System 7system=12system=13system=14GCFS2.0SPSv3CFSv2
January(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)(warning)(error)
February(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)(tick)(error)
March(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)(tick)(error)
April(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)(tick)(error)
May(error)(tick)(tick)(tick)(error)(tick)(tick)(tick)(tick)(tick)(error)
June(error)(tick)(tick)(tick)(error)(tick)(tick)(tick)(tick)(tick)(error)
July(error)(tick)(tick)(tick)(error)(tick)(tick)(tick)(tick)(tick)(error)
August(error)(tick)(tick)(tick)(error)(tick)(tick)(tick)(tick)(tick)(error)
September(tick)(tick)(tick)(tick)(tick)*(tick)(tick)(tick)(tick)(tick)(error)
October(tick)(tick)(tick)(tick)(tick)*(tick)(tick)(tick)(tick)(tick)(error)
November(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)(warning)(error)
December(error)(tick)(tick)(tick)(error)(tick)(tick)(error)(tick)
(warning)(error)

(a) NOTE: For the Met Office contribution, due to the production of hindcasts "on-the-fly", the CDS keyword 'system' does not have the same meaning as for the other contributors. Instead, it is just an indexing label that gets changed once per year.

NOTE

(tick) *
Currently these data are only available using CDS API and may appear as (partially or totally) unavailable in the CDS interactive forms.

(warning)

Currently there is data under this entries in the CDS. However some of this data is affected by a number of known issues (more details here). This symbols will be updated to indicate full availability once the issues have been fixed.

Nominal Start Dates

For systems with lagged ensembles having multiple start dates, the "nominal" start date is assigned as follows:

Météo-France (all systems):

  • Forecasts/Hindcasts: nominal month M includes the members initialised in the last weeks of month M-1 and on the 1st of month M

NOTE: Even though the different members of all Météo-France forecasting system ensembles are initialized using a lagged approach, the real start dates are not revealed to the users, so all members are encoded as if they were initialized on the 1st of the month

GloSea5-GC2:

  • Hindcasts: nominal month M includes the members initialised on the 1st of month M and on the 25th, 17th and 9th of month M-1
  • Forecasts: nominal month M includes the members initialised on the 1st of month M and all available members with start dates back to, and including, the 2nd of month M-1

NCEP:

  • Hindcasts: nominal month M includes the members initialised on the 1st of month M (if available) and on all start days from month M-1 except the 1st (see table at CFSv2 description, section 6)
  • Forecasts: nominal month M includes the members initialised on the 1st of month M and all available members with start dates back to, and including, the 2nd of month M-1



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