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The Interpolation library (EMOSLIB) includes Interpolation software and GRIB, BUFR, CREX encoding/decoding routines. It is used by the ECMWF meteorological archival and retrieval system (MARS) and also by the ECMWF workstation METV.

This software covers :

• Interpolating fields
  
  • spectral coefficients to spectral coefficients
  • spectral coefficients to rotated spectral coefficients
  • spectral coefficients to regular latitude-longitude grids
  • spectral coefficients to regular gaussian grids
  • spectral coefficients to quasi-regular gaussian grids
  • regular latitude-longitude grids to regular latitude-longitude grids
  • regular latitude-longitude grids to regular gaussian grids
  • regular gaussian grids to regular gaussian grids
  • regular gaussian grids to regular latitude-longitude grids
  • quasi-regular gaussian grids to regular latitude-longitude grids
  • quasi-regular gaussian grids to regular gaussian grids
• encoding/decoding WMO FM-92 GRIB GRIB code messages
• encoding/decoding WMO FM-94 BUFR BUFR code messages
• encoding/decoding WMO FM-95 CREX CREX code messages
• handling pure binary unix files
• handling files of GRIB products in an indexed manner
• multiple(Temperton's) FFT routines (from release 000340 onwards)

All of the above software which is included in the Interpolation library (EMOSLIB) was developed at the European Centre for Medium-Range Weather Forecasts

A new cycle of this public version is created from time to time to consolidate operational extensions.