Parameters forming part of the Climate Change Adaptation 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: From 6-hourly to monthly

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
167	2 metre temperature	2t	K	0	0	0	103	0	2			GG
~~228164~~	~~Total Cloud Cover~~	~~tcc~~	%	0	6	1	1			8		~~GG.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
164	Total cloud cover	tcc	(0 - 1)	0	6	192	1			8	1	GG. ECMWF unit.
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
168	2 metre dewpoint temperature	2d	K	0	0	6	103	0	2			GG
235	Skin temperature	skt	K	0	0	17	1					GG
~~210061~~	~~Carbon dioxide mass mixing ratio~~	~~co2~~	~~kg kg**-1~~	0	20	2						~~GG. 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						~~GG.~~ Needs Simulated Satellite mode on, which we won't activate for ClimateDT.
79	Total column cloud ice water	tciw	kg m**-2	0	1	70	1			8
78	Total column cloud liquid water	tclw	kg m**-2	0	1	69	1			8		GG

Sea ice

Time resolution: From 6-hourly to monthly

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	comments
262000	Sea ice thickness	sithick	m	10	2	1	174	missing	missing	176	missing	missing	O2D
262001	Sea ice area fraction	siconc	Fraction	10	2	0	174	missing	missing	176	missing	missing	O2D
262003	Eastward sea ice velocity	siue	m s**-1	10	2	4	174	missing	missing	176	missing	missing	O2D
262004	Northward sea ice velocity	sivn	m s**-1	10	2	5	174	missing	missing	176	missing	missing	O2D
262021	X-component of sea ice velocity	six	m s**-1	10	2	24	174	missing	missing	176	missing	missing	O2D
262022	Y-component of sea ice velocity	siy	m s**-1	10	2	25	174	missing	missing	176	missing	missing	O2D

Ocean

Time resolution: From 6-hourly to monthly

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	comments
262101	Sea surface temperature	tos	K	10	3	0	160	0	0	missing	missing	missing	O2D
262124	Sea surface height	zos	m	10	3	1	160	0	0	missing	missing	missing	O2D
262100	Sea surface practical salinity	sos	g kg**-1	10	3	3	160	0	0	missing	missing	missing	O2D
XXX	Sea surface salinity	XXX	kg kg**-1	10	3	21	160	0	0	missing	missing	missing	O2D. Awaiting confirmation of new WMO encoding.
XXX	Vertically integrated meridional volume transport	XXX	m3 m-1 s**-1	10	4	44							O2D. Awaiting confirmation of new WMO encoding.

Fields on pressure levels

Time resolution: From 6-hourly to monthly

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 First Fixed Surface	comments
~~155~~	~~Divergence~~	d	~~s**-1~~	2	13	~~100~~	~~SH.~~ Not needed if we have U and V wind components.
~~156~~	~~Geopotential height~~	gh	~~gpm~~	3	5	~~100~~	~~GG.~~ Not yet supported by ClimateDT IFS. Can be computed using geopotential - added below.
129	Geopotential	z	m2 s-2	3	4	100	GG. Not in official portfolio.
133	Specific humidity	q	kg kg**-1	1	0	100	GG
157	Relative humidity	r	%	1	1	100	GG
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
~~138~~	~~Vorticity (relative)~~	vo	~~s**-1~~	2	12	~~100~~	~~SH.~~ Not needed if we have U and V wind components.

Fields on model levels

Atmosphere

Time resolution: ...

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
77	Eta-coordinate vertical velocity	etadot	s**-1	2	32	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
247	Specific cloud ice water content	ciwc	kg kg**-1	1	84	105	GG. Not in official portfolio.
246	Specific cloud liquid water content	clwc	kg kg**-1	1	83	105	GG. Not in official portfolio.
133	Specific humidity	q	kg kg**-1	1	0	105	GG. Not in official portfolio.
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.
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.
135	Vertical velocity	w	Pa s**-1	2	8	105	GG. Also called omega. Not in official portfolio.

Ocean

Time resolution: From 6-hourly to monthly

75 model levels: (1, ..., 75)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	type Of Second Fixed Surface	comments
262505	Northward sea water velocity	von	m s**-1	10	4	24	168	168	O3D
262506	Eastward sea water velocity	uoe	m s**-1	10	4	23	168	168	O3D
262501	Sea water potential temperature	thetao	K	10	4	18	168	168	O3D
262500	Sea water practical salinity	so	g kg**-1	10	4	21	168	168	O3D. Not in official portfolio
~~262516~~	~~Sea water salinity~~	~~salo~~	~~kg kg**-1~~	10	4	3	~~168~~	~~168~~	~~O3D~~

Sea-ice/snow/soil

Time resolution: From 6-hourly to monthly
5 model levels: (1, ..., 5)

param Id	name	short Name	units	parameter Category	parameter Number	type Of First Fixed Surface	local Tables Version	comments
~~3066~~	~~Snow depth~~	~~sde~~	m	1	11	~~114~~		~~GG. Depth of snow without conversion to water.~~ Not yet supported by ClimateDT IFS.
228141	Snow depth water equivalent	sd	kg m**-2	1	60	114		GG. Depth of snow with conversion to water. WMO unit.
141	Snow depth	sd	m of water equivalent	1	254	114	1	GG. Depth of snow with conversion to water. ECMWF unit.

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: 1 x hourly, 1 x monthly

param Id	name	short Name	units	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	comments
235031	Mean snowfall rate	msr	kg m-2 s-1	1	53	1			GG. WMO unit.
235033	Mean surface sensible heat flux	msshf	W m**-2	0	11	1			GG.
235034	Mean surface latent heat flux	mslhf	W m**-2	0	10	1			GG.
235035	Mean surface downward short-wave radiation flux	msdwswrf	W m**-2	4	7	1			GG.
235036	Mean surface downward long-wave radiation flux	msdwlwrf	W m**-2	5	3	1			GG.
235037	Mean surface net short-wave radiation flux	msnswrf	W m**-2	4	9	1			GG.
235038	Mean surface net long-wave radiation flux	msnlwrf	W m**-2	5	5	1			GG.
235039	Mean top net short-wave radiation flux	mtnswrf	W m**-2	4	9	8			GG.
235040	Mean top net long-wave radiation flux	mtnlwrf	W m**-2	5	5	8			GG.
235043	Mean evaporation rate	mer	kg m-2 s-1	1	79	1			GG. WMO unit.
235053	Mean top downward short-wave radiation flux	mtdwswrf	W m**-2	4	7	8			GG.
235055	Mean total precipitation rate	mtpr	kg m-2 s-1	1	52	1			GG. WMO unit.
228004	Mean 2 metre temperature	mean2t	K	0	0	103	0	2	GG.

Sea ice

Time resolution: 1 x daily, 1 x monthly

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	comments
263000	Time-mean sea ice thickness	avg_sithick	m	10	2	1	174	missing	missing	176	missing	missing	O2D
263001	Time-mean sea ice area fraction	avg_siconc	Fraction	10	2	0	174	missing	missing	176	missing	missing	O2D
263003	Time-mean eastward sea ice velocity	avg_siue	m s**-1	10	2	4	174	missing	missing	176	missing	missing	O2D
263004	Time-mean northward sea ice velocity	avg_sivn	m s**-1	10	2	5	174	missing	missing	176	missing	missing	O2D
263021	Time-mean X-component of sea ice velocity	avg_six	m s**-1	10	2	24	174	missing	missing	176	missing	missing	O2D
263022	Time-mean Y-component of sea ice velocity	avg_siy	m s**-1	10	2	25	174	missing	missing	176	missing	missing	O2D

Ocean

Time resolution: 1 x daily, 1 x monthly

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	comments
263101	Time-mean sea surface temperature	avg_tos	K	10	3	0	160	missing	missing	missing	O2D
263124	Time-mean sea surface height	avg_zos	m	10	3	1	160	missing	missing	missing	O2D
263100	Time-mean sea surface practical salinity	avg_sos	g kg**-1	10	3	3	160	missing	missing	missing	O2D

Fields on model levels

Ocean

Time resolution: 1 x daily, 1 x monthly

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	type Of Second Fixed Surface	comments
263505	Time-mean northward sea water velocity	avg_von	m s**-1	10	4	24	168	168	O3D
263506	Time-mean eastward sea water velocity	avg_uoe	m s**-1	10	4	23	168	168	O3D
263501	Time-mean sea water potential temperature	avg_thetao	K	10	4	18	168	168	O3D
263500	Time-mean sea water practical salinity	avg_so	g kg**-1	10	4	21	168	168	O3D. Not in official portfolio

Accumulated encodings

Fields on a single level or surface

Atmosphere

Time resolution: hourly accumulation

param Id	name	short Name	units	parameter Category	parameter Number	type Of First Fixed Surface	type Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
~~228228~~	~~Total Precipitation~~	tp	~~kg m**-2~~	1	52	1		1		~~GG.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
228	Total precipitation	tp	m	1	193	1	255	1	1	GG. ECMWF unit.
~~228144~~	~~Snowfall water equivalent~~	sf	~~kg m**-2~~	1	53	1		1		~~GG.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
144	Snowfall	sf	m of water equivalent	1	198	1		1	1	GG. ECMWF unit.
146	Surface sensible heat flux	sshf	J m**-2	0	11	1		1		GG
147	Surface latent heat flux	slhf	J m**-2	0	10	1		1		GG
169	Surface short-wave (solar) radiation downwards	ssrd	J m**-2	4	7	1		1		GG
177	Surface net long-wave (thermal) radiation	str	J m**-2	5	5	1		1		GG
176	Surface net short-wave (solar) radiation	ssr	J m**-2	4	9	1		1		GG
212	TOA incident short-wave (solar) radiation	tisr	J m**-2	4	7	8		1		GG
175	Surface long-wave (thermal) radiation downwards	strd	J m**-2	5	3	1		1		GG
179	Top net long-wave (thermal) radiation	ttr	J m**-2	5	5	8		1		GG
178	Top net short-wave (solar) radiation	tsr	J m**-2	4	9	8		1		GG
~~260259~~	~~Evaporation~~	~~eva~~	~~kg m**-2~~	1	79	1		1		~~GG.~~ ~~WMO unit.~~ Not yet supported by ClimateDT IFS.
182	Evaporation	e	m of water equivalent	1	199	1		1	1	GG. ECMWF unit.

Maximum encodings

There are no maximum encodings for this dataset.

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
260049	235031	228144
231	235033	146
X	235034	147
X	235035	169
X	235036	175
X	235037	176
X	235038	177
X	235039	178
X	235040	179
232	235043	260259
X	235053	212
260048	235055	228228
167	228004	X

Page tree

DestinE ClimateDT Parameters

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Sea ice

Ocean

Fields on pressure levels

Fields on model levels

Atmosphere

Ocean

Sea-ice/snow/soil

Fields on height levels

Mean encodings

Fields on a single level or surface

Atmosphere

Sea ice

Ocean

Fields on model levels

Ocean

Accumulated encodings

Fields on a single level or surface

Atmosphere

Maximum encodings

Minimum encodings

Conversions