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changes.mady.by.user Carsten Maass

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Archived data may originate from e.g. routine operations (od), from research experiments (rd), reanalysis data sets (e.g. e5 for ERA5, ei for ERA interim, e4 for ERA-40), TIGGE (ti) , S2S (s2) or experiments created by Member State 's users (Internet country code, e.g. uk, es,...). Operations and reanalysis are the most frequently used data classes. A full list of ECMWF classes is available online.

Example: 

retrieve,                            # 2 m temperature fields from operational analyses

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 class=od,                           # at all synoptic time on 1st September 2018.

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retrieve,
 class=od,
 date=2018-09-01,
 expver=1,
 levtype=sfc,
 param=167.128,
 stream=oper,
 time=00/06/12/18,
 type=an,
 target="output"

Dissemination

Not supported (as all data needs to be from class od).The only supported option is class=od (operational data)