Parameters forming part of the Weather and Geophysical Extremes Digital Twin (DT) are investigated here. See the encodings below, which are current for ecCodes 2.35.0.

Data availability

For class=rd,expver=i7yv,stream=oper/wave,type=fc, selected fields in Secn 1.1.1 and 1.1.2 are available from date=20231204 on the LUMI databridge.

For class=d1,dataset=extremes-dt,expver=0001,stream=oper/wave,type=fc all fields below are available from date=20240404 on the LUMI databridge.

Please check the Data availability and retrieval page for more precise information on the availability of parameters and dates.

Additional keys

Please note that additional keys are often necessary in addition to the base parameter definition below. For example for:

statistical processing (e.g. time interval of processing)
level information (e.g. a given pressure level, say 300 hPa)

Legend:

Parameter ready for GRIB2 archiving

Parameter with clarifications required for GRIB2 archiving

Parameter which needs to be created/modified for GRIB2 archiving

Contents:

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Time resolution: Hourly (step=0/1/2/.../96).

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	local Tables Version	comments
31	Sea ice area fraction	ci	(0 - 1)	10	2	0	1					GG
34	Sea surface temperature	sst	K	10	3	0	1					GG
78	Total column cloud liquid water	tclw	kg m**-2	0	1	69	1			8		GG
134	Surface pressure	sp	Pa	0	3	0	1					GG
136	Total column water	tcw	kg m**-2	0	1	51	1			8		GG
137	Total column vertically-integrated water vapour	tcwv	kg m**-2	0	1	64	1			8		GG
151	Mean sea level pressure	msl	Pa	0	3	0	101					GG
165	10 metre U wind component	10u	m s**-1	0	2	2	103	0	10			GG
166	10 metre V wind component	10v	m s**-1	0	2	3	103	0	10			GG
167	2 metre temperature	2t	K	0	0	0	103	0	2			GG
168	2 metre dewpoint temperature	2d	K	0	0	6	103	0	2			GG
3020	Visibility	vis	m	0	19	0	103	0	10			GG
228029	Instantaneous 10 metre wind gust	i10fg	m s**-1	0	2	22	103	0	10			GG
228050	Instantaneous total lightning flash density	litoti	km-2 day-1	0	17	4	1			8		GG.
228218	Convective rain rate	crr	kg m-2 s-1	0	1	76	1					GG
228219	Large scale rain rate	lsrr	kg m-2 s-1	0	1	77	1					GG
228221	Large scale snowfall rate water equivalent	lssfr	kg m-2 s-1	0	1	56	1					GG.
228235	Most-unstable CAPE	mucape	J kg**-1	0	7	6	17					GG. Used rather than 59; cape, which is phased out.
260015	Precipitation type	ptype	code table (4.201)	0	1	19						GG
~~164~~	~~Total cloud cover~~	~~tcc~~	~~(0 - 1)~~	0	6	~~192~~	1			8	1	GG. ECMWF unit. Not yet supported by ExtremesDT IFS.
~~162071~~	~~Vertical integral of eastward water vapour flux~~	~~viwve~~	~~kg m-1 s-1~~	0	1	~~150~~	1			8		GG
~~162072~~	~~Vertical integral of northward water vapour flux~~	~~viwvn~~	~~kg m-1 s-1~~	0	1	~~151~~	1			8		GG
~~228003~~	~~Friction velocity~~	~~zust~~	~~m s**-1~~	10	0	17						GG. Not yet supported by ExtremesDT IFS.
~~228164~~	~~Total Cloud Cover~~	~~tcc~~	%	0	6	1	1			8		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~228236~~	~~Most-unstable CIN~~	~~mucin~~	~~J kg**-1~~	0	7	7	17					GG. Used rather than 228001; cin, which is phased out. Not yet supported by ExtremesDT IFS.
~~231013~~	~~Reflectance in 0.4 micron channel~~	~~rfl04~~	%	3	1	30						GG. Not yet supported by ExtremesDT IFS.
~~260227~~	~~Reflectance in 0.6 micron channel~~	~~rfl06~~	%	3	1	9						GG. Not yet supported by ExtremesDT IFS.
~~260228~~	~~Reflectance in 0.8 micron channel~~	~~rfl08~~	%	3	1	10						GG. Not yet supported by ExtremesDT IFS.
~~260510~~	~~Cloudy brightness temperature~~	~~clbt~~	K	3	1	14						GG. Needs Simulated Satellite mode on...

Wave

Time resolution: Hourly (step=0/1/2/.../96).

param Id	name	short Name	units	discipline	parameter Number	type Of First Fixed Surface	comments
140221	Mean zero-crossing wave period	mp2	s	10	28		GG
140229	Significant height of combined wind waves and swell	swh	m	10	3	101	GG
140230	Mean wave direction	mwd	degrees	10	14		GG
140231	Peak wave period	pp1d	s	10	34		GG
140232	Mean wave period	mwp	s	10	15		GG

Ocean

Time resolution: Hourly.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
~~262121~~	~~Vertically-integrated heat content in the upper 300 m~~	~~hc300m~~	~~J m**-2~~	10	4	22	~~160~~	0	0	~~160~~	0	~~300~~			~~O2D~~

Fields on pressure levels

Time resolution: Hourly (step=0/1/2/.../96).

21 pressure levels: (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000)

param Id	name	short Name	units	parameter Category	parameter Number	type Of First Fixed Surface	comments
129	Geopotential	z	m2 s-2	3	4	100	GG. At surface this is orography.
130	Temperature	t	K	0	0	100	GG
131	U component of wind	u	m s**-1	2	2	100	GG
132	V component of wind	v	m s**-1	2	3	100	GG
133	Specific humidity	q	kg kg**-1	1	0	100	GG
138	Vorticity (relative)	vo	s**-1	2	12	100	SH. For diagnostic purposes only - not to go to databridge.
155	Divergence	d	s**-1	2	13	100	SH. For diagnostic purposes only - not to go to databridge.
157	Relative humidity	r	%	1	1	100	GG

Fields on model levels

Atmosphere

Time resolution: Hourly (step=0/1/2/.../96).

137 model levels: (137, 136, ..., 1) - L137 model level definitions

param Id	name	short Name	units	parameter Category	parameter Number	type Of First Fixed Surface	comments
75	Specific rain water content	crwc	kg kg**-1	1	85	105	GG. Not in official portfolio.
76	Specific snow water content	cswc	kg kg**-1	1	86	105	GG. Not in official portfolio.
77	Eta-coordinate vertical velocity	etadot	s**-1	2	32	105	GG. Not in official portfolio.
130	Temperature	t	K	0	0	105	GG. Not in official portfolio.
131	U component of wind	u	m s**-1	2	2	105	GG. Not in official portfolio.
132	V component of wind	v	m s**-1	2	3	105	GG. Not in official portfolio.
133	Specific humidity	q	kg kg**-1	1	0	105	GG. Not in official portfolio.
135	Vertical velocity	w	Pa s**-1	2	8	105	GG. Also called omega. Not in official portfolio.
246	Specific cloud liquid water content	clwc	kg kg**-1	1	83	105	GG. Not in official portfolio.
247	Specific cloud ice water content	ciwc	kg kg**-1	1	84	105	GG. Not in official portfolio.
248	Fraction of cloud cover	cc	(0-1)	6	32	105	GG. Not in official portfolio.
~~260238~~	~~Geometric vertical velocity~~	wz	~~m s**-1~~	2	9	~~105~~	GG. Not in official portfolio. Replaces 120; Exper. product. Not yet supported by ExtremesDT IFS.

Sea-ice/snow/soil

Time resolution: Hourly (step=0/1/2/.../96).
4 model levels: (1, ..., 4)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
~~260360~~	~~Soil temperature~~	~~sot~~	K	2	3	18	~~151~~	0	~~N-1~~	~~151~~	0	N			~~GG.~~ ~~For soil layer N.~~ ~~Replaces:~~ 139; stl1 170; stl2 183; stl3 236; stl4 Not yet supported by ExtremesDT IFS.
~~260199~~	~~Volumetric soil moisture~~	~~vsw~~	~~m3 m-3~~	2	0	25	~~151~~	0	~~N-1~~	~~151~~	0	N			~~GG.~~ ~~For soil layer N.~~ ~~Replaces:~~ 39; swvl1 40; swvl2 41; swvl3 42; swvl4 Not yet supported by ExtremesDT IFS.

Fields on height levels

Time resolution: Hourly (step=0/1/2/.../96).

Currently 100m only. These are only for height levels >10m to preserve backwards compatibility with longstanding model fields (2t, 10u, 10v,...)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
228246	100 metre U wind component	100u	m s**-1	0	2	2	103	0	100						GG
228247	100 metre V wind component	100v	m s**-1	0	2	3	103	0	100						GG

Mean encodings

Fields on a single level or surface

Atmosphere

Time resolution: 6 hourly means (step=0-6/6-12/.../90-96).

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
228058	Averaged total lightning flash density in the last 6 hours	litota6	km-2 day-1	0	17	4	1			8			0		GG

Accumulated encodings

Fields on a single level or surface

Atmosphere

Time resolution: Hourly accumulations since the start of the forecast (step=0-1/1-2/2-3/.../95-96).

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	type Of Statistical Processing	local Tables Version	comments
142	Large-scale precipitation	lsp	m	0	1	196	1	1	1	GG. ECMWF unit.
144	Snowfall	sf	m of water equivalent	0	1	198	1	1	1	GG. ECMWF unit.
169	Surface short-wave (solar) radiation downwards	ssrd	J m**-2	0	4	7	1	1		GG
175	Surface long-wave (thermal) radiation downwards	strd	J m**-2	0	5	3	1	1		GG
176	Surface net short-wave (solar) radiation	ssr	J m**-2	0	4	9	1	1		GG
177	Surface net long-wave (thermal) radiation	str	J m**-2	0	5	5	1	1		GG
178	Top net short-wave (solar) radiation	tsr	J m**-2	0	4	9	8	1		GG
179	Top net long-wave (thermal) radiation	ttr	J m**-2	0	5	5	8	1		GG
180	Time-integrated eastward turbulent surface stress	ewss	N m**-2 s	0	2	62	1	1		GG.
181	Time-integrated northward turbulent surface stress	nsss	N m**-2 s	0	2	63	1	1		GG.
205	Runoff	ro	m	2	0	201		1	1	GG. ECMWF unit.
228	Total precipitation	tp	m	0	1	193	1	1	1	GG. ECMWF unit.
228216	Accumulated freezing rain	fzra	m	0	1	194	1	1	1	GG. ECMWF unit.
~~3062~~	~~Large-scale precipitation~~	~~lsp~~	~~kg m**-2~~	0	1	54	1	1		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~228143~~	~~Convective precipitation~~	cp	~~kg m**-2~~	0	1	37	1	1		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~228144~~	~~Snowfall water equivalent~~	sf	~~kg m**-2~~	0	1	53	1	1		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~228228~~	~~Total Precipitation~~	tp	~~kg m**-2~~	0	1	52	1	1		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~231001~~	~~Accumulated freezing rain water equivalent~~	~~fzrawe~~	~~kg m**-2~~	0	1	67	1	1		GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~231002~~	~~Runoff water equivalent (surface plus subsurface)~~	~~rowe~~	~~kg m**-2~~	2	0	42		1		GG. WMO unit. Not yet supported by ExtremesDT IFS.

Maximum encodings

Fields on a single level or surface

Atmosphere

Time resolution: Hourly max (step=0-1/1-2/2-3/.../95-96).

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
49	~~10 metre wind gust since previous post-processing~~	~~10fg~~	~~m s**-1~~	0	2	22	~~103~~	0	10				2		GG. Not yet supported by ExtremesDT IFS.

Minimum encodings

There are no minimum encodings for this dataset.

Conversions

The conversion between the base parameter, mean and accumulation is as follows for relevant parameters:

Inst paramId	Mean paramId	Accum paramId
...	...	...

Page tree

DestinE ExtremesDT Parameters

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Wave

Ocean

Fields on pressure levels

Fields on model levels

Atmosphere

Sea-ice/snow/soil

Fields on height levels

Mean encodings

Fields on a single level or surface

Atmosphere

Accumulated encodings

Fields on a single level or surface

Atmosphere

Maximum encodings

Fields on a single level or surface

Atmosphere

Minimum encodings

Conversions