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.(to be checked)
Product description
- The ERA Interim dataset contains atmospheric and surface parameters:
- 6-hourly atmospheric fields on model levels, pressure levels, potential temperature and potential vorticity
- 3-hourly surface fields and daily vertical integrals
- Monthly averages of daily means
Synoptic monthly averages at 0 UTC, 6 UTC, 12 UTC, 18 UTC
- The temporal coverage is from 1 January 1979 to present
- The spatial coverage is global
- The spectral resolution is T255 (~80 km spatial resolution) on 60 vertical levels from the surface up to 0.1 hPa.
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.
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