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Find on this page technical specification of the required input data and processing for the WMO Lead Centre for Wave Forecast Verification project (LC-WFV)

Parameters

  • Output frequency:  the model output steps should be between 1 and 12 hour

  • Output types:  forecasts and analysis
 Nameunits

Atmospheric forcing:

10 metre U wind component

m/s

10 metre V wind component

m/s
Wave Fields:

Significant height of combined wind waves and swell

m

Peak wave period

s
Mean zero-crossing wave periods

Mean wave direction

degree true

Follow the links for exact GRIB2 WMO compliant definitions.

Encoding

All details about the required input files including sample data can be found in the page Encoding details

Sample data

  • Providers are asked to provide full sample data from one model run containing all expected parameters, steps, forecast types etc.
  • Naming convention for sample data:
    wave_<Organization_acronym>_<YYYYMMDDRR>_<prod/test>_<an/fc>.grib2
    acronym listed in the table in the page GRIB data for WMO LC-WFV
    prod/test ... production or test version of the data
    an/fc ... analysis or forecast
  • Merge all parameters from all steps for given model run and output type into one file:
    e.g. wave test forecasts from ECMWF on the 1st of September 2017, 12Z  => wave_ECMWF_2017090112_test_fc.grib2
  • Put sample data on ecgate to a directory with reading permission
    • alternatively use any other downloadable location (e.g. google drive)

    • alternatively use this ftp (quota only 10 GB):

      host: ftp.ecmwf.int 
user: observations 
passwd: observations2013 
directory: wave
  • The naming convention for future production data might change

Production

  • The data will be pulled via ftp from an agreed server location at the data producer's site.
  • The ECMWF's acquisition system will be used for handling the production data exchange.
  • Participants are committed to guarantee a steady and reliable provision of their data and to communicate any relevant changes.
  • The support mailing list on provider's side will be required to allow smooth communication related to common production issues in the future.

Contact

Contact Richard Mladek for any further details, sample data exchange etc.

 

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