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
Ensemble Status Period IFS cycle

Radiative forcing

Sea-surface Production year
ERA-20CMv0 experimental Jan 1899 - Dec 2009 Cy37r3 CMIP5 HadISST2.0.0.0 2013
ERA-20CM final Jan 1899 - Dec 2010 Cy38r1 CMIP5 HadISST2.1.0.0


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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