Parameters forming part of the Climate Change Adaptation Digital Twin (DT) are investigated here. See the encodings below, which are current for ecCodes 2.36.0.

See the Climate DT overview page for more details on data availability and accessing the data.

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 (levtype `sfc`)

Time resolution: Hourly (time=0000/0100/...)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	local Tables Version	comments
78	Total column cloud liquid water	tclw	kg m**-2	0	1	69	entireAtmosphere	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
79	Total column cloud ice water	tciw	kg m**-2	0	1	70	entireAtmosphere	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
130	Temperature	t	K	0	0	0	surface	-		model=ICON HEALPIX
134	Surface pressure	sp	Pa	0	3	0	surface	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
137	Total column vertically-integrated water vapour	tcwv	kg m**-2	0	1	64	entireAtmosphere	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
141	Snow depth	sd	m of water equivalent	0	1	254	surface	-	1	model=IFS-NEMO/IFS-FESOM HEALPIX. Depth of snow with conversion to water. ECMWF unit.
148	Charnock	chnk	Numeric	10	0	76	surface	-		model=IFS-NEMO/IFS-FESOM HEALPIX
151	Mean sea level pressure	msl	Pa	0	3	0	meanSea	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
159	Boundary layer height	blh	m	0	3	18	surface	-		model=IFS-NEMO/IFS-FESOM HEALPIX
164	Total cloud cover	tcc	(0 - 1)	0	6	192	entireAtmosphere	-	1	model=IFS-NEMO/IFS-FESOM HEALPIX. ECMWF unit.
165	10 metre U wind component	10u	m s**-1	0	2	2	heightAboveGround	10		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
166	10 metre V wind component	10v	m s**-1	0	2	3	heightAboveGround	10		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
167	2 metre temperature	2t	K	0	0	0	heightAboveGround	2		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
168	2 metre dewpoint temperature	2d	K	0	0	6	heightAboveGround	2		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
186	Low cloud cover	lcc	(0 - 1)	0	6	193	lowCloudLayer	-	1	model=IFS-NEMO/IFS-FESOM HEALPIX. ECMWF unit.
187	Medium cloud cover	mcc	(0 - 1)	0	6	194	mediumCloudLayer	-	1	model=IFS-NEMO/IFS-FESOM HEALPIX. ECMWF unit.
188	High cloud cover	hcc	(0 - 1)	0	6	195	highCloudLayer	-	1	model=IFS-NEMO/IFS-FESOM HEALPIX. ECMWF unit.
235	Skin temperature	skt	K	0	0	17	surface	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
228164	Total Cloud Cover	tcc	%	0	6	1	entireAtmosphere	-		model=ICON HEALPIX. WMO unit.
260048	Total precipitation rate	tprate	kg m-2 s-1	0	1	52	surface	-		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
~~3066~~	~~Snow depth~~	~~sde~~	m	0	1	11	~~snowLayer~~	-		~~HEALPIX. Depth of snow without conversion to water.~~ Not yet supported by ClimateDT IFS.
~~3073~~	~~Low cloud cover~~	~~lcc~~	%	0	6	3	~~lowCloudLayer~~	-		HEALPIX. WMO unit. Not yet supported by ClimateDT IFS.
~~3074~~	~~Medium cloud cover~~	~~mcc~~	%	0	6	4	~~mediumCloudLayer~~	-		HEALPIX. WMO unit. Not yet supported by ClimateDT IFS.
~~3075~~	~~High cloud cover~~	~~hcc~~	%	0	6	5	~~highCloudLayer~~	-		HEALPIX. WMO unit. Not yet supported by ClimateDT IFS.
~~228141~~	~~Snow depth water equivalent~~	sd	~~kg m**-2~~	0	1	60	~~surface~~	-		HEALPIX. Depth of snow with conversion to water. WMO unit. Not yet supported by ClimateDT IFS.
~~210061~~	~~Carbon dioxide mass mixing ratio~~	~~co2~~	~~kg kg**-1~~	0	20	2				~~HEALPIX. With key {chemicalConstituent=3; is_chemical=1} for CO2. Need also productionStatusOfProcessedData=12 to get DE pseudocentre encoding.~~ Not yet supported by ClimateDT IFS.
~~260510~~	~~Cloudy brightness temperature~~	~~clbt~~	K	3	1	14				~~HEALPIX.~~ Needs Simulated Satellite mode on, which we won't activate for ClimateDT.

Time resolution: Daily (date=YYYYMMDD,time=0000)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	type Of Statistical Processing	local Tables Version	comments
129	Geopotential	z	m2 s-2	0	3	4	surface	-			TEMP model=IFS-NEMO/IFS-FESOM HEALPIX. Geopotential at surface gives orography. This output of constant fields is needed by applications.
172	Land-sea mask	lsm	(0 - 1)	2	0	0	surface	-			TEMP model=IFS-NEMO/IFS-FESOM HEALPIX. This output of constant fields is needed by applications.

Fields on pressure levels (levtype `pl`)

Time resolution: Hourly (time=0000/0100/...)

19 pressure levels: (1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10, 5, 1)

param Id	name	short Name	units	parameter Category	parameter Number	type Of Level	level	comments
60	Potential vorticity	pv	K m2 kg-1 s**-1	2	14	isobaricInhPa	<as-above>	model=IFS-NEMO/IFS-FESOM HEALPIX
129	Geopotential	z	m2 s-2	3	4	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
130	Temperature	t	K	0	0	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
131	U component of wind	u	m s**-1	2	2	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
132	V component of wind	v	m s**-1	2	3	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
133	Specific humidity	q	kg kg**-1	1	0	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
135	Vertical velocity	w	Pa s**-1	2	8	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX This is in "Pa s-1" not "m s-1".
157	Relative humidity	r	%	1	1	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
246	Specific cloud liquid water content	clwc	kg kg**-1	1	83	isobaricInhPa	<as-above>	model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
~~138~~	~~Vorticity (relative)~~	vo	~~s**-1~~	2	12	~~isobaricInhPa~~	~~<as-above>~~	~~SH.~~ Not needed if we have U and V wind components.
~~155~~	~~Divergence~~	d	~~s**-1~~	2	13	~~isobaricInhPa~~	~~<as-above>~~	~~SH.~~ Not needed if we have U and V wind components.
~~156~~	~~Geopotential height~~	gh	~~gpm~~	3	5	~~isobaricInhPa~~	~~<as-above>~~	~~HEALPIX.~~ Not yet supported by ClimateDT IFS. Can be computed using geopotential - added above.

Fields on model levels

Sea-ice/snow/soil (levtype `sol`)

Time resolution: Hourly (time=0000/0100/...)
5 model levels: (1, ..., 5)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	type Of Statistical Processing	local Tables Version	comments
228141	Snow depth water equivalent	sd	kg m**-2	0	1	60	snow	<as-above>			model=IFS-NEMO/IFS-FESOM HEALPIX. Depth of snow with conversion to water. WMO unit.

Fields on height levels (levtype `hl`)

Time resolution: Hourly (time=0000/0100/...)

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 Level	level	type Of Statistical Processing	local Tables Version	comments
228246	100 metre U wind component	100u	m s**-1	0	2	2	heightAboveGround	100			model=IFS-NEMO/IFS-FESOM HEALPIX
228247	100 metre V wind component	100v	m s**-1	0	2	3	heightAboveGround	100			model=IFS-NEMO/IFS-FESOM HEALPIX

Mean encodings

Fields on a single level or surface

Sea ice (levtype `o2d`)

Time resolution: 1 x daily (date=YYYYMMDD,time=0000)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	comments
263000	Time-mean sea ice thickness	avg_sithick	m	10	2	1	iceLayerOnWater	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
263001	Time-mean sea ice area fraction	avg_siconc	Fraction	10	2	0	iceLayerOnWater	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
263003	Time-mean eastward sea ice velocity	avg_siue	m s**-1	10	2	4	iceLayerOnWater	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
263004	Time-mean northward sea ice velocity	avg_sivn	m s**-1	10	2	5	iceLayerOnWater	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
263008	Time-mean sea ice volume per unit area	avg_sivol	m3 m-2	10	2	15	iceLayerOnWater	-	model=IFS-NEMO/IFS-FESOM O2D
263009	Time-mean snow volume over sea ice per unit area	avg_snvol	m3 m-2	10	2	16	snowLayerOverIceOnWater	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
263021	Time-mean X-component of sea ice velocity	avg_six	m s**-1	10	2	24	iceLayerOnWater	-	model=IFS-NEMO/IFS-FESOM O2D
263022	Time-mean Y-component of sea ice velocity	avg_siy	m s**-1	10	2	25	iceLayerOnWater	-	model=IFS-NEMO/IFS-FESOM O2D

Ocean (levtype `o2d`)

Time resolution: 1 x daily (date=YYYYMMDD,time=0000)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	comments
263100	Time-mean sea surface practical salinity	avg_sos	g kg**-1	10	3	3	oceanSurface	-	model=IFS-NEMO/IFS-FESOM O2D
263101	Time-mean sea surface temperature	avg_tos	K	10	3	0	oceanSurface	-	model=IFS-NEMO/IFS-FESOM O2D
263114	Time-mean ocean mixed layer depth defined by sigma theta 0.03 kg m-3	avg_mlotst030	m	10	4	14	mixedLayerDepthByDensity	0.03	model=ICON O2D
263121	Time-mean vertically-integrated heat content in the upper 300 m	avg_hc300m	J m**-2	10	4	22	depthBelowSeaLayer	300	model=IFS-NEMO/IFS-FESOM O2D
263122	Time-mean vertically-integrated heat content in the upper 700 m	avg_hc700m	J m**-2	10	4	22	depthBelowSeaLayer	700	model=IFS-NEMO/IFS-FESOM O2D
263124	Time-mean sea surface height	avg_zos	m	10	3	1	oceanSurface	-	model=ICON/IFS-NEMO/IFS-FESOM O2D
~~263145~~	~~Time-mean sea surface salinity~~	~~avg_sss~~	~~kg kg**-1~~	10	3	21	~~oceanSurface~~	-	~~O2D.~~ Will use practical salinity.

Fields on model levels

Ocean (levtype `o3d`)

Time resolution: 1 x daily (date=YYYYMMDD,time=0000)
NEMO: 75 model levels: (1, ..., 75)
FESOM: 72 model levels: (1, ..., 72)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	level	type Of Statistical Processing	comments
263500	Time-mean sea water practical salinity	avg_so	g kg**-1	10	4	21	oceanModelLayer	<as-above>	0	model=ICON/IFS-NEMO/IFS-FESOM O3D
263501	Time-mean sea water potential temperature	avg_thetao	K	10	4	18	oceanModelLayer	<as-above>	0	model=ICON/IFS-NEMO/IFS-FESOM O3D
263505	Time-mean northward sea water velocity	avg_von	m s**-1	10	4	24	oceanModelLayer	<as-above>	0	model=ICON/IFS-NEMO/IFS-FESOM O3D
263506	Time-mean eastward sea water velocity	avg_uoe	m s**-1	10	4	23	oceanModelLayer	<as-above>	0	model=ICON/IFS-NEMO/IFS-FESOM O3D
263507	Time-mean upward sea water velocity	avg_wo	m s**-1	10	4	27	oceanModel	<as-above>	0	model=ICON/IFS-NEMO/IFS-FESOM O3D
~~263516~~	~~Time-mean sea water salinity~~	~~salo~~	~~kg kg**-1~~	10	4	3	~~168~~	~~<as-above>~~		~~O3D.~~ Will use practical salinity.

Accumulated encodings

Fields on a single level or surface

Atmosphere (levtype `sfc`)

Time resolution: Hourly accumulation (time=0000/0100/...)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of Level	type Of Statistical Processing	local Tables Version	comments
8	Surface runoff	sro	m	2	0	202	surface	1	1	model=IFS-NEMO/IFS-FESOM HEALPIX ECMWF unit
9	Sub-surface runoff	ssro	m	2	0	204	surface	1	1	model=IFS-NEMO/IFS-FESOM HEALPIX ECMWF unit
144	Snowfall	sf	m of water equivalent	0	1	198	surface	1	1	model=IFS-NEMO/IFS-FESOM HEALPIX ECMWF unit
146	Surface sensible heat flux	sshf	J m**-2	0	0	11	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
147	Surface latent heat flux	slhf	J m**-2	0	0	10	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
169	Surface short-wave (solar) radiation downwards	ssrd	J m**-2	0	4	7	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
175	Surface long-wave (thermal) radiation downwards	strd	J m**-2	0	5	3	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
176	Surface net short-wave (solar) radiation	ssr	J m**-2	0	4	9	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
177	Surface net long-wave (thermal) radiation	str	J m**-2	0	5	5	surface	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
178	Top net short-wave (solar) radiation	tsr	J m**-2	0	4	9	nominalTop	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
179	Top net long-wave (thermal) radiation	ttr	J m**-2	0	5	5	nominalTop	1		model=ICON/IFS-NEMO/IFS-FESOM HEALPIX
180	Time-integrated eastward turbulent surface stress	ewss	N m**-2 s	0	2	62	surface	1		model=IFS-NEMO/IFS-FESOM HEALPIX
181	Time-integrated northward turbulent surface stress	nsss	N m**-2 s	0	2	63	surface	1		model=IFS-NEMO/IFS-FESOM HEALPIX
182	Evaporation	e	m of water equivalent	0	1	199	surface	1	1	model=IFS-NEMO/IFS-FESOM HEALPIX ECMWF unit
212	TOA incident short-wave (solar) radiation	tisr	J m**-2	0	4	7	nominalTop	1		model=IFS-NEMO/IFS-FESOM HEALPIX
228	Total precipitation	tp	m	0	1	193	surface	1	1	model=IFS-NEMO/IFS-FESOM HEALPIX ECMWF unit
260654	Time-integrated eastward turbulent surface stress due to surface roughness	etsssr	N m**-2 s	0	2	66	surface	1		model=ICON HEALPIX
260655	Time-integrated northward turbulent surface stress due to surface roughness	ntsssr	N m**-2 s	0	2	67	surface	1		model=ICON HEALPIX
~~228144~~	~~Snowfall water equivalent~~	sf	~~kg m**-2~~	0	1	53	~~surface~~	1		~~HEALPIX.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
~~228228~~	~~Total Precipitation~~	tp	~~kg m**-2~~	0	1	52	~~surface~~	1		~~HEALPIX.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
~~231010~~	~~Surface runoff~~	~~surfro~~	~~kg m**-2~~	2	0	51	~~surface~~	1		~~HEALPIX.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
~~231012~~	~~Sub-surface runoff~~	~~ssurfro~~	~~kg m**-2~~	2	0	52	~~surface~~	1		~~HEALPIX.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
~~260259~~	~~Evaporation~~	~~eva~~	~~kg m**-2~~	0	1	79	~~surface~~	1		~~HEALPIX.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.

Maximum encodings

There are no maximum encodings for this dataset.

Minimum encodings

There are no minimum encodings for this dataset.

Instantaneous encodings

Fields on a single level or surface

Atmosphere (levtype sfc)

Fields on pressure levels (levtype pl)

Fields on model levels

Sea-ice/snow/soil (levtype sol)

Fields on height levels (levtype hl)

Mean encodings

Fields on a single level or surface

Sea ice (levtype o2d)

Ocean (levtype o2d)

Fields on model levels

Ocean (levtype o3d)

Accumulated encodings

Fields on a single level or surface

Atmosphere (levtype sfc)

Maximum encodings

Minimum encodings

Atmosphere (levtype `sfc`)

Fields on pressure levels (levtype `pl`)

Sea-ice/snow/soil (levtype `sol`)

Fields on height levels (levtype `hl`)

Sea ice (levtype `o2d`)

Ocean (levtype `o2d`)

Ocean (levtype `o3d`)

Atmosphere (levtype `sfc`)