3. Data types and format

Data types

Reanalysis: ERA-15

 reanalyses from 12/1978 to 02/1994

 spectral T106 resolution with 31 vertical hybrid levels

ERA-40

 reanalyses from mid-1957 to 2001

 T159 spectral resolution with 60 vertical levels

ERA-interim  reanalyses from 01/1979 up to 3 months ago  T255 spectral resolution with 60 vertical levels  corrected for different models so should be consistent  useful for long term analyses

Forecast: Operational data • data up to 2 days ago

Data format: GRIB1 GRIB2 was implemented on 18 May 2011