Page History

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Nominal start dates	ECMWF		Météo-France			Met Office(a)			DWD	CMCC	NCEP
	System 4	SEAS5	System 5	System 6	System7	system=12	system=13	system=14	GCFS2.0	SPSv3	CFSv2
September 2017 - October 2017
November 2017 - January 2018
February 2018 - April 2018						(1)
May 2018 - October 2018
November 2018 - April 2019							(43)
May 2019 - September 2019								(2)
October 2019 - present											(3)

⁽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⁾ Monthly mean data temporarily unavailable. See description of data issue number E4.
⁽⁴⁾ Hindcast period is extended to 2016.

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Nominal start date	ECMWF		Météo-France			Met Office(a)			DWD	CMCC	NCEP
	System 4	SEAS5	System 5	System 6	System 7	system=12	system=13	system=14	GCFS2.0	SPSv3	CFSv2
January
February					*			*
March
April
May
June
July
August
September
October											(b)*
November
December

^(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.^(b) NOTE: Monthly mean data temporarily unavailable. See description of data issue number E4.

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