Model integration for the 20th-century (Final) (ERA-20CM)

There are two versions of the ERA-20CM atmospheric model integrations.

Each is comprised of a 10-member ensemble using:

  • Radiative forcing from CMIP5
  • Sea-surface temperature (SST) and sea ice cover from HadISST2
Overview of the ERA-20CM versions
EnsembleStatusPeriodIFS cycle

Radiative forcing

Sea-surfaceProduction year
ERA-20CMv0experimentalJan 1899 - Dec 2009Cy37r3CMIP5HadISST2.0.0.02013
ERA-20CMfinalJan 1899 - Dec 2010Cy38r1CMIP5HadISST2.1.0.0


Note that ERA-20CMv0 is an experimental version and public access to this data will be disabled in the future. Existing users of ERA-20CMv0 should migrate to the final version as soon as possible.

The modeluses a sophisticated data assimilation methodology which includes a model bias correction. The ocean model used is forced by atmospheric daily surface fluxes, relaxed to SST and bias corrected.

Reanalysis (global)
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