ERA Interim is a dataset, showing the results of a global climate reanalysis from 1979 to date. ERA Interim continues to be updated in near real time as new data becomes available.
ERA Interim is one of several products of two research projects, ERA-CLIM and ERA-CLIM2.
Product description
Synoptic monthly averages at 0 UTC, 6 UTC, 12 UTC, 18 UTC
The data assimilation system used to produce ERA-Interim is based on a 2006 release of the Integrated Forecast System (IFS - Cy31r2). The system includes a 4-dimensional variational analysis (4D-Var) with a 12-hour analysis window.
Parameters and download
For a list of fields (parameters) in ERA Interim and download see the ECMWF dataserver.
Note that we are aware of several quality issues with ERA-Interim data.
Further documentation
See Berrisford et al. (2011) for detailed documentation of the parameters in this dataset.
An open-access journal article describing the ERA-Interim reanalysis is available from the Quarterly Journal of the Royal Meteorological Society. Additional details of the modelling and data assimilation system used to produce ERA-Interim can be found in the IFS documentation (choose Cy31r1) .
Further detailed documentation on ERA Interim is available in the ECMWF eLibrary.