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
|ERA-20CMv0||experimental||Jan 1899 - Dec 2009||Cy37r3||CMIP5||HadISST220.127.116.11||2013|
|ERA-20CM||final||Jan 1899 - Dec 2010||Cy38r1||CMIP5||HadISST18.104.22.168|
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 model uses 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.