DestinE ExtremesDT Parameters

Created by Matthew Griffith, last modified on Nov 24, 2023

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Parameters forming part of the Weather and Geophysical Extremes Digital Twin (DT) are investigated here. See the encodings below, which are current for ecCodes 2.32.1.

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: 3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-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
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
151	Mean sea level pressure	msl	Pa	0	3	0	101								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
168	2 metre dewpoint temperature	2d	K	0	0	6	103	0	2						GG
228235	Most-unstable CAPE	mucape	J kg**-1	0	7	6	17								GG. Used rather than 59; cape, which is phased out.
~~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.
228218	Convective rain rate	crr	kg m-2 s-1	0	1	76	1								GG
~~228003~~	~~Friction velocity~~	~~zust~~	~~m s**-1~~	10	0	17									GG. Not yet supported by ExtremesDT IFS.
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. Not yet supported by ExtremesDT IFS.
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. Not yet supported by ExtremesDT IFS.
260015	Precipitation type	ptype	code table (4.201)	0	1	19									GG
31	Sea ice area fraction	ci	(0 - 1)	10	2	0	1								GG
34	Sea surface temperature	sst	K	10	3	0	1								GG
~~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...
~~228164~~	~~Total Cloud Cover~~	~~tcc~~	%	0	6	1	1			8					GG. WMO unit. Not yet supported by ExtremesDT IFS.
~~164~~	~~Total cloud cover~~	~~tcc~~	~~(0 - 1)~~	0	6	~~192~~	1			8				1	GG. ECMWF unit. Not yet supported by ExtremesDT IFS.
78	Total column cloud liquid water	tclw	kg m**-2	0	1	69	1			8					GG
137	Total column vertically-integrated water vapour	tcwv	kg m**-2	0	1	64	1			8					GG
~~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
~~3020~~	~~Visibility~~	~~vis~~	m	0	19	0	~~103~~	0	10						GG

Wave

Time resolution: 3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-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
140221	Mean zero-crossing wave period	mp2	s	10	0	28									GG
140230	Mean wave direction	mwd	degrees	10	0	14									GG
140232	Mean wave period	mwp	s	10	0	15									GG
140231	Peak wave period	pp1d	s	10	0	34									GG
140229	Significant height of combined wind waves and swell	swh	m	10	0	3	101								GG

Ocean

Time resolution: 3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-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: 3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-hourly.

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	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
155	Divergence	d	s**-1	0	2	13	100								SH
156	Geopotential height	gh	gpm	0	3	5	100								GG
133	Specific humidity	q	kg kg**-1	0	1	0	100								GG
157	Relative humidity	r	%	0	1	1	100								GG
130	Temperature	t	K	0	0	0	100								GG
131	U component of wind	u	m s**-1	0	2	2	100								GG
132	V component of wind	v	m s**-1	0	2	3	100								GG
138	Vorticity (relative)	vo	s**-1	0	2	12	100								SH

Fields on model levels

Atmosphere

Time resolution: 3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-hourly.

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

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
77	Eta-coordinate vertical velocity	etadot	s**-1	0	2	32	105								GG. Not in official portfolio.
248	Fraction of cloud cover	cc	(0-1)	0	6	32	105								GG. Not in official portfolio.
260238	Geometric vertical velocity	wz	m s**-1	0	2	9	105								GG. Not in official portfolio. Replaces 120; Exper. product
247	Specific cloud ice water content	ciwc	kg kg**-1	0	1	84	105								GG. Not in official portfolio.
246	Specific cloud liquid water content	clwc	kg kg**-1	0	1	83	105								GG. Not in official portfolio.
133	Specific humidity	q	kg kg**-1	0	1	0	105								GG. Not in official portfolio.
75	Specific rain water content	crwc	kg kg**-1	0	1	85	105								GG. Not in official portfolio.
76	Specific snow water content	cswc	kg kg**-1	0	1	86	105								GG. Not in official portfolio.
130	Temperature	t	K	0	0	0	105								GG. Not in official portfolio.
131	U component of wind	u	m s**-1	0	2	2	105								GG. Not in official portfolio.
132	V component of wind	v	m s**-1	0	2	3	105								GG. Not in official portfolio.
135	Vertical velocity	w	Pa s**-1	0	2	8	105								GG. Also called omega. Not in official portfolio.

Sea-ice/snow/soil

Time resolution: From 6-hourly to monthly
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	0	151	0	1			GG. Replaces 139; stl1
260360	Soil temperature	sot	K	2	3	18	151	0	1	151	0	2			GG. Replaces 170; stl2
260360	Soil temperature	sot	K	2	3	18	151	0	2	151	0	3			GG. Replaces 183; stl3
260360	Soil temperature	sot	K	2	3	18	151	0	3	151	0	4			GG. Replaces 236; stl4
260199	Volumetric soil moisture	vsw	m3 m-3	2	0	25	151	0	0	151	0	1			GG. Replaces 39; swvl1
260199	Volumetric soil moisture	vsw	m3 m-3	2	0	25	151	0	1	151	0	2			GG. Replaces 40; swvl2
260199	Volumetric soil moisture	vsw	m3 m-3	2	0	25	151	0	2	151	0	3			GG. Replaces 41; swvl3
260199	Volumetric soil moisture	vsw	m3 m-3	2	0	25	151	0	3	151	0	4			GG. Replaces 42; swvl4

Fields on height levels

Time resolution: From 6-hourly to monthly

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.

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 accums.

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
205	Runoff	ro	m	2	0	201							1	1	GG. ECMWF unit.
231002	Runoff water equivalent	rowe	kg m**-2	2	0	42							1		GG. WMO unit.
228	Total precipitation	tp	m	0	1	193	1						1	1	GG. ECMWF unit.
228228	Total Precipitation	tp	kg m**-2	0	1	52	1						1		GG. WMO unit.
231001	Accumulated freezing rain water equivalent	fzrawe	kg m**-2	0	1	67	1						1		GG. WMO unit.
228216	Accumulated freezing rain	fzra	m	0	1	194	1						1	1	GG. ECMWF unit.
228143	Convective precipitation	cp	kg m**-2	0	1	37	1						1		GG
180	Time-integrated eastward turbulent surface stress	ewss	N m**-2 s	0	2	62	1						1		GG.
3062	Large-scale precipitation	lsp	kg m**-2	0	1	54	1						1		GG. WMO unit.
142	Large-scale precipitation	lsp	m	0	1	196	1						1	1	GG. ECMWF unit.
181	Time-integrated northward turbulent surface stress	nsss	N m**-2 s	0	2	63	1						1		GG.
228144	Snowfall water equivalent	sf	kg m**-2	0	1	53	1						1		GG. WMO unit.
144	Snowfall	sf	m of water equivalent	0	1	198	1						1	1	GG. ECMWF unit.
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
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
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

Maximum encodings

Fields on a single level or surface

Atmosphere

Time resolution: hourly max.

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

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
...	...	...

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