Find on in this page technical specification of the required input data and processing workflow.
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Parameters
Output type: forecast
only one forecast product per centre is expected for
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Parameters
verification - the best available one for the common inter-comparison
- Output time: 00 and , 6, 12, 18 UTC (depending on availability)
Output frequency: the model output steps should be between 1 and 12 6 hours (including step 0)
Output type: forecast
- Domain: regular latitude‐longitude grid at the resolution best matching the native resolution of the direct model output
encoded as forecast type as well)
- the model output steps should be the shortest available
- Wave parameters should be obtained from the full 2-D spectrum (we stress this fact as there seems to be some confusion about wave parameters' names and definitions even in the latest WMO GRIB2 code tables)
| name | units | paramId*1 | shortName*1 | ||||||
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Atmospheric forcing | |||||||||
| Name | units | ||||||||
| 10 metre U wind component | m/s | 165 | 10u | ||||||
| 10 metre V wind component | m/s | 166 | 10v | ||||||
| Wave | Fields:m | fields | Mean wave direction | degree true | 140230 | mwd | s | ||
| Mean zero-crossing wave period | s | 140221 | mp2 | ||||||
| Peak wave period | s | 140231 | pp1d | ||||||
| Significant height of combined wind waves and swell | m | 140229 | swhdegree true |
- Follow the links for exact GRIB2 WMO compliant definitions
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- *1 valid in ECMWF's ecCodes only
Encoding
All details about the required input files including sample data format 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><centre WMO origin>_<YYYYMMDDRR>_<prod/test>_<an/fc>fc.grib2
acronym listed in the table below
prod/test ... production or test version of the data
an/fc ... analysis or forecastforecast (step 0 should be also encoded as of forecast type) - 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_ECMWFecmf_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)::
Show If special @anonymous Alert Log in to see ftp details
Show If special @authenticated Code Block host: ftp.ecmwf.int user: observations passwd: observations2013 directory: wave
- The naming convention for future production data might change
Production data acquisition
- 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.
Models description
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Centre
acronym(code)
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suiteName *4
(centre + model + domain)
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Runs [UTC]
(0/12 only)
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Steps
[h]
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Fcst step
[h]
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Resolution
[º]
(lat x lon if not the same)
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Domain
[lat, lon]
(of the first and last grid point)
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Domain size
[#lat x #lon]
(#total points)
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[GB]
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European Centre for Medium-Range Weather
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ecmf-wam-glob
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3 (0-144)
6 (150-240)
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[90.0,0] [-90,359.875]
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1441 x 2880
(4150080)
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[80.03906S,0.17578125E] [80.03906N,359.82422E]
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[ 90.0,0] [90,359.5]
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[-90.0, 0] [90, 359.75]
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1 (0-120)
3 (123-180)
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0.5 (base grid)
0.067-0.167 (regional/coastal mosaics)
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[-90.0,0] [90,359.5]
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[90.0,0] [ -90,359.8]
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edzw-wam-gwam
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[89.25,0] [-85.25,359.75]
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[66,-10.50] [30,42]
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Contact
| Show If | ||
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Contact Richard Mladek for any further details, sample data exchange etc. |
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Laboratoire D'Océanographie Physique et Spatiale, France
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[-78,-180] [80,179.5]
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0, 12
0-84
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[75,0] [-75,359.5]
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[20,-59] [67,8]
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[30,-7] [46,37]
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[42,-9.5] [44,1]
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[32.5,-9.5] [37.5,-5.5]
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National Institute of Water and Atmospheric Research, New Zealand
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0.15625 x 0.234375
(10/64 x 15/64)
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[-81.25,0] [81.25,359.765625]
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Det Norske Meteorologiske Institutt, Norway
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Servicio de Hidrografía Naval, Servicio Meteorológico, Argentina
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[65,-180] [-80,179]
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New Zealand MetService
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(1) WMO code does not exist yet for LOPS (WMO acronym for Brest is lfrb)
(2) acronym not defined yet in ECMWF ECCODES for centre 204 (NIWA with head office in Auckland(nzak))(fixed in ECCODES 2.7.0)
(3) both runs, 6 parameters, all steps, forecast only
(4) ECMWF ECCODES only (GRIB2 local section 2 for MARS archiving purposes)
Contact
| Show If | ||
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Contact Richard Mladek for any further details, sample data exchange etc. |
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