LC-WFV technical details

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 time: 00 and 12 UTC
Output frequency: the model output steps should be the shortest available between 1 and 6 hours (including step 0)
Output type: forecast (only one forecast product per centre is expected for verification - the best available one for common inter-comparison)

	Name	units
Atmospheric forcing:	10 metre U wind component	m/s
Atmospheric forcing:	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 period	s
	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 below
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.

Models description

	Organization	Acronym	Centre acronym (code)	suiteName ^*4 (subcentre) _{suiteName = Centre acronym if subcentre is not defined}	Runs [UTC] (0/12 only)	Steps [h]	Step frequency [h]	Number of steps	Resolution [º] (lat x lon if not the same)	Domain [lat, lon] (of the first and last grid point)	Domain size [#lat x #lon] (#total points)	Full 1day data size ^*3 [GB]	Remarks
1	European Centre for Medium-Range Weather	ECMWF	ecmf (98)	ecmf	0, 12	0-240	3 (0-144) 6 (150-240)	65	0.125	[90.0,0] [-90,359.875]	1441 x 2880 (4150080)	4.8
2	Met office, UK	UKMO	egrr (74)	egrr	0, 12	0-144	3	49	0.2343750 x 0.3515625	[80.03906S,0.17578125E] [80.03906N,359.82422E]
3	Fleet Numerical Meteorology and Oceanography Centre, USA	FNMOC	fnmo (58)	fnmo	0, 12	0-180	6	31	0.5	[ 90.0,0] [90,359.5]
4	Environment and Climate Change Canada, Canada	ECCC	cwao (54)	cwao	0, 12	0-120	1	121	0.25	[-90.0, 0] [90, 359.75]	721x1440	1.4	Mean wave direction not available
5	National Centres for Environmental Prediction, USA	NCEP	kwbc (7)	kwbc	0, 12	0-180	1 (0-120) 3 (123-180)	121 20	0.5 (base grid) 0.067-0.167 (regional/coastal mosaics)	[-90.0,0] [90,359.5]
6	Météo France, France	METFR	lfpw (84)	lfpw	0, 12	0-120	3	41	0.2	[90.0,0] [ -90,359.8]
7	Deutscher Wetterdienst, Germany	DWD	edzw (78)	edzw	0, 12	0-174	1	175	0.25	[89.25,0] [-85.25,359.75]
				edzw-wam-ewam	0, 12	0-78	1	79	0.05 x 0.10	[66,-10.50] [30,42]
				edzw-wam-cwam	0, 12	0-48	1	49	30'' x 50''	[56°26'45'',06°10'25''] [53°13'45'',14°54'35'']
8	Bureau of Meteorology, Australia	BoM	ammc (1)	ammc
9	Laboratoire D'Océanographie Physique et Spatiale, France	LOPS	lfpw (84)	lops (202)	0, 12	0-144	3	49	0.5	[-78,-180] [80,179.5]
10	Japan Meteorological Agency, Japan	JMA	rjtd (34)	rjtd	0, 12	0-84	3	29	0.5	[75,0] [-75,359.5]
10	Japan Meteorological Agency, Japan	JMA	rjtd (34)	rjtd	12	87-264	3	60	0.5	[75,0] [-75,359.5]
11	Korea Meteorological Administration, Republic of Korea	KMA	rksl (40)	rksl
12	Puertos del Estado, Spain (Madrid)	PRTOS	lemm (214)	lemm	0, 12	0-72	1	73
				lemm-wam-atl					0.25	[20,-59] [67,8]
				lemm-wam-med					5'	[30,-7] [46,37]
				lemm-wam-bis					2.5	[42,-9.5] [44,1]
				lemm-wam-cad					5'	[32.5,-9.5] [37.5,-5.5]
				lemm-wam-can					5'	[27.25,-18.5] [29.75,-13]
				lemm-wam-gib					1'	[35.75,-6.5] [36.75,-5.25]
13	Danmarks Meteorologiske Institut, Denmark	DMI	ekmi (94)	ekmi
14	National Institute of Water and Atmospheric Research, New Zealand	NIWA	niwa (204)	niwa	0	0-144	1	145	0.15625 x 0.234375 (10/64 x 15/64)	[-81.25,0] [81.25,359.765625]
15	Det Norske Meteorologiske Institutt, Norway	METNO	enmi (88)	enmi
16	Servicio de Hidrografía Naval, Servicio Meteorológico, Argentina	SHNSM	sabm (41)	sabm	0, 12	0-96	1	97	1	[65,-180] [-80,179]
				sabm-ww-aus					0.5	[-15,-180] [-79,179.5]
				sabm-ww-pla					0.2	[-25,-70] [-56,-40]
				sabm-ww-lit					4'	[-40,-69.5] [-55,-61.03]
				sabm-ww-pam					3'	[-33.9,-62.5] [-40.5,-53.5]
17	New Zealand MetService	NZMS	nzkl (69)	nzkl
18	Servizio Meteorologico dell'Aeronautica Militare, Italy	METEOAM	cnmc (80)	cnmc	0, 12	0-72	3	25	0.05	[-33.9,-62.5] [-40.5,-53.5]	321 * 846 (271566)	0.1	~~step 0 missing?~~

(1) WMO code does not exist yet for LOPS (GTS text acronym for Brest is lfrb but we could introduce e.g. lops for MARS purposes)

~~(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

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

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