Data Catalogue¶

1. Introduction¶

This page provides the data catalogue of the parameters provided as part of the DestinE Climate DT data portfolio for the generation 2 simulations. The two streams available are clmn and clte, with clmn being used for the monthly means.

Note

For an instant xarray-view of the data in Python, please refer to the Polytope Climate DT example notebooks.

Lazily browse the full monthly catalogue
Lazily browse the full hourly catalogue
Search for variables using the variable lookup tool

See the data access page for how to perform analyses from any local or HPC environment.

Some key facts:

Temporal resolution:
- Hourly atmospheric fields (clte)
- Daily mean ocean fields (clte)
- Monthly mean atmospheric fields (clmn)
- Monthly mean ocean fields (clmn)
Spatial resolution:
- resolution=high → HEALPIX H1024 (closest HEALPix resolution to the native resolution of the model run at ~5 km) or H512 (~10 km)
- resolution=standard → HEALPIX H128 (interpolated from the native resolution of the model)

Data is provided on various levtype values:

sfc: surface / single level (see 2.1 levtype=sfc and 3.1 levtype=sfc)
pl: pressure levels (see 2.2 levtype=pl and 3.2 levtype=pl)
hl: height levels (see 2.5 levtype=hl and 3.5 levtype=hl)
sol: soil levels (see 2.6 levtype=sol and 3.6 levtype=sol)
o2d: ocean 2D (see 2.3 levtype=o2d and 3.3 levtype=o2d)
o3d: ocean 3D (see 2.4 levtype=o3d and 3.4 levtype=o3d)

Note

ICON does not include the 100m u and v wind components.

2. Climate DT Daily and Hourly Output¶

2.1 levtype=sfc¶

Short name	Parameter ID	Long name	Units	Frequency	Comments
tclw	78	Total column cloud liquid water	kg m-2	hourly
tciw	79	Total column cloud ice water	kg m-2	hourly
sp	134	Surface pressure	Pa	hourly
tcw	136	Total column water	kg m-2	hourly
tcwv	137	Total column vertically-integrated water vapour	kg m-2	hourly
msl	151	Mean sea level pressure	Pa	hourly
10u	165	10 metre U wind component	m s-1	hourly
10v	166	10 metre V wind component	m s-1	hourly
2t	167	2 metre temperature	K	hourly
2d	168	2 metre dewpoint temperature	K	hourly
10si	207	10 metre wind speed	m s-1	hourly
skt	235	Skin temperature	K	hourly
sd	228141	Snow depth water equivalent	kg m-2	hourly
tcc	228164	Total Cloud Cover	%	hourly
avg_surfror	235020	Time-mean surface runoff rate	kg m-2 s-1	hourly
avg_ssurfror	235021	Time-mean sub-surface runoff rate	kg m-2 s-1	hourly
avg_tsrwe	235031	Time-mean total snowfall rate water equivalent	kg m-2 s-1	hourly
avg_ishf	235033	Time-mean surface sensible heat flux	W m-2	hourly
avg_slhtf	235034	Time-mean surface latent heat flux	W m-2	hourly
avg_sdswrf	235035	Time-mean surface downward short-wave radiation flux	W m-2	hourly
avg_sdlwrf	235036	Time-mean surface downward long-wave radiation flux	W m-2	hourly
avg_snswrf	235037	Time-mean surface net short-wave radiation flux	W m-2	hourly
avg_snlwrf	235038	Time-mean surface net long-wave radiation flux	W m-2	hourly
avg_tnswrf	235039	Time-mean top net short-wave radiation flux	W m-2	hourly
avg_tnlwrf	235040	Time-mean top net long-wave radiation flux	W m-2	hourly
avg_iews	235041	Time-mean eastward turbulent surface stress	N m-2	hourly	ICON: see errata
avg_inss	235042	Time-mean northward turbulent surface stress	N m-2	hourly	ICON: see errata
avg_ie	235043	Time-mean moisture flux	kg m-2 s-1	hourly
avg_tnswrfcs	235049	Time-mean top net short-wave radiation flux, clear sky	W m-2	hourly
avg_tnlwrfcs	235050	Time-mean top net long-wave radiation flux, clear sky	W m-2	hourly
avg_snswrfcs	235051	Time-mean surface net short-wave radiation flux, clear sky	W m-2	hourly
avg_snlwrfcs	235052	Time-mean surface net long-wave radiation flux, clear sky	W m-2	hourly
avg_tdswrf	235053	Time mean top downward short-wave radiation flux	W m-2	hourly
avg_tprate	235055	Time-mean total precipitation rate	kg m-2 s-1	hourly
lsm	172	Land-sea mask	(0 - 1)	daily
orog	228002	Orography	m	daily	ICON: see errata

Select levtype="sfc" in the Polytope Climate DT example notebooks to access this stream and browse lazily through these variables.

2.2 levtype=pl¶

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

Type of Level: isobaricInhPa

Short name	Parameter ID	Long name	Units	Frequency
pv	60	Potential vorticity	K m2 kg-1 s-1	hourly
z	129	Geopotential	m2 s-2	hourly
t	130	Temperature	K	hourly
u	131	U component of wind	m s-1	hourly
v	132	V component of wind	m s-1	hourly
q	133	Specific humidity	kg kg-1	hourly
w	135	Vertical velocity	Pa s-1	hourly
r	157	Relative humidity	%	hourly
clwc	246	Specific cloud liquid water content	kg kg-1	hourly

Select levtype="pl" in the Polytope Climate DT example notebooks to access these variables.

2.3 levtype=o2d¶

Short name	Parameter ID	Long name	Units	Frequency	Comments
avg_sithick	263000	Time-mean sea ice thickness	m	daily
avg_siconc	263001	Time-mean sea ice area fraction	Fraction	daily
avg_siue	263003	Time-mean eastward sea ice velocity	m s-1	daily	See errata
avg_sivn	263004	Time-mean northward sea ice velocity	m s-1	daily	See errata
avg_sivol	263008	Time-mean sea ice volume per unit area	m3 m-2	daily
avg_snvol	263009	Time-mean snow volume over sea ice per unit area	m3 m-2	daily
avg_sos	263100	Time-mean sea surface practical salinity	g kg-1	daily
avg_tos	263101	Time-mean sea surface temperature	K	daily
avg_hc300m	263121	Time-mean vertically-integrated heat content in the upper 300 m	J m-2	daily
avg_hc700m	263122	Time-mean vertically-integrated heat content in the upper 700 m	J m-2	daily
avg_hcbtm	263123	Time-mean total column heat content	J m-2	daily
avg_zos	263124	Time-mean sea surface height	m	daily

Select levtype="o2d" in the Polytope Climate DT example notebooks to access these variables.

2.4 levtype=o3d¶

ICON: 72 model levels (1, …, 72) and 73 half-levels (1, …, 73)
NEMO: 75 model levels (1, …, 75)
FESOM: 69 model levels (1, …, 69) and 70 half-levels (1, …, 70)

Short name	Parameter ID	Long name	Units	Frequency	Comments
avg_so	263500	Time-mean sea water practical salinity	g kg-1	daily	IFS-NEMO: see errata
avg_thetao	263501	Time-mean sea water potential temperature	K	daily	IFS-NEMO: see errata
avg_von	263505	Time-mean northward sea water velocity	m s-1	daily
avg_uoe	263506	Time-mean eastward sea water velocity	m s-1	daily
avg_wo	263507	Time-mean upward sea water velocity	m s-1	daily	Provided on half-levels. Not available for ICON.

Select levtype="o3d" in the Polytope Climate DT example notebooks to access these variables.

2.5 levtype=hl¶

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

Short name	Parameter ID	Long name	Units	Frequency	Type of Level	Level	Comments
u	131	U component of wind	m s-1	hourly	heightAboveGround	100m	Not available for ICON
v	132	V component of wind	m s-1	hourly	heightAboveGround	100m	Not available for ICON

Select levtype="hl" in the Polytope Climate DT example notebooks to access these variables.

2.6 levtype=sol¶

IFS: 4 model levels: (1, …, 4) (depths 0.07 m, 0.21 m, 0.72 m, 1.89 m) ICON: 5 model levels: (1, …, 5) (depths 0.065 m, 0.319 m, 1.232 m, 4.134 m, 9.834 m)

Short name	Parameter ID	Long name	Units	Frequency	Comments
sd	228141	Snow depth water equivalent	kg m-2	hourly	Not available for ICON
vsw	260199	Volumetric soil moisture	m3 m-3	hourly	ICON: see errata
sot	260360	Soil temperature	K	hourly

Select levtype="sol" in the Polytope Climate DT example notebooks to access these variables.

3. Climate DT Monthly Output¶

3.1 levtype=sfc¶

Short name	Parameter ID	Long name	Units	Comments
avg_tclw	235087	Time-mean total column liquid water	kg m-2
avg_tciw	235088	Time-mean total column cloud ice water	kg m-2
avg_sp	235134	Time-mean surface pressure	Pa
avg_tcw	235136	Time-mean total column water	kg m-2
avg_tcwv	235137	Time-mean total column vertically-integrated water vapour	kg m-2
avg_msl	235151	Time-mean mean sea level pressure	Pa
avg_10u	235165	Time-mean 10 metre U wind component	m s-1
avg_10v	235166	Time-mean 10 metre V wind component	m s-1
avg_2t	228004	Time-mean 2 metre temperature	K
avg_2d	235168	Time-mean 2 metre dewpoint temperature	K
avg_10ws	228005	Time-mean 10 metre wind speed	m s-1
avg_skt	235079	Time-mean skin temperature	K
avg_sd	235078	Time-mean snow depth water equivalent	kg m-2
avg_tcc	235288	Time-mean total cloud cover	%	ICON: see errata
avg_surfror	235020	Time-mean surface runoff rate	kg m-2 s-1
avg_ssurfror	235021	Time-mean sub-surface runoff rate	kg m-2 s-1
avg_tsrwe	235031	Time-mean total snowfall rate water equivalent	kg m-2 s-1
avg_ishf	235033	Time-mean surface sensible heat flux	W m-2
avg_slhtf	235034	Time-mean surface latent heat flux	W m-2
avg_sdswrf	235035	Time-mean surface downward short-wave radiation flux	W m-2
avg_sdlwrf	235036	Time-mean surface downward long-wave radiation flux	W m-2
avg_snswrf	235037	Time-mean surface net short-wave radiation flux	W m-2
avg_snlwrf	235038	Time-mean surface net long-wave radiation flux	W m-2
avg_tnswrf	235039	Time-mean top net short-wave radiation flux	W m-2
avg_tnlwrf	235040	Time-mean top net long-wave radiation flux	W m-2
avg_iews	235041	Time-mean eastward turbulent surface stress	N m-2	ICON: see errata
avg_inss	235042	Time-mean northward turbulent surface stress	N m-2	ICON: see errata
avg_ie	235043	Time-mean moisture flux	kg m-2 s-1
avg_tnswrfcs	235049	Time-mean top net short-wave radiation flux, clear sky	W m-2
avg_tnlwrfcs	235050	Time-mean top net long-wave radiation flux, clear sky	W m-2
avg_snswrfcs	235051	Time-mean surface net short-wave radiation flux, clear sky	W m-2
avg_snlwrfcs	235052	Time-mean surface net long-wave radiation flux, clear sky	W m-2
avg_tdswrf	235053	Time mean top downward short-wave radiation flux	W m-2
avg_tprate	235055	Time-mean total precipitation rate	kg m-2 s-1

Select levtype="sfc" in the Polytope Climate DT example notebooks to access these variables.

3.2 levtype=pl¶

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

Short name	Parameter ID	Long name	Units	Comments
avg_pv	235100	Time-mean potential vorticity	K m2 kg-1 s-1	Only standard resolution
avg_z	235129	Time-mean geopotential	m2 s-2	Only standard resolution
avg_t	235130	Time-mean temperature	K	Only standard resolution
avg_u	235131	Time-mean U component of wind	m s-1	Only standard resolution
avg_v	235132	Time-mean V component of wind	m s-1	Only standard resolution
avg_q	235133	Time-mean specific humidity	kg kg-1	Only standard resolution
avg_w	235135	Time-mean vertical velocity	Pa s-1	Only standard resolution
avg_r	235157	Time-mean relative humidity	%	Only standard resolution
avg_clwc	235246	Time-mean specific cloud liquid water content	kg kg-1	Only standard resolution

Select levtype="pl" in the Polytope Climate DT example notebooks to access these variables.

3.3 levtype=o2d¶

Short name	Parameter ID	Long name	Units	Comments
avg_sithick	263000	Time-mean sea ice thickness	m
avg_siconc	263001	Time-mean sea ice area fraction	Fraction
avg_siue	263003	Time-mean eastward sea ice velocity	m s-1	See errata
avg_sivn	263004	Time-mean northward sea ice velocity	m s-1	See errata
avg_sivol	263008	Time-mean sea ice volume per unit area	m3 m-2
avg_snvol	263009	Time-mean snow volume over sea ice per unit area	m3 m-2
avg_sos	263100	Time-mean sea surface practical salinity	g kg-1
avg_tos	263101	Time-mean sea surface temperature	K
avg_hc300m	263121	Time-mean vertically-integrated heat content in the upper 300 m	J m-2
avg_hc700m	263122	Time-mean vertically-integrated heat content in the upper 700 m	J m-2
avg_hcbtm	263123	Time-mean total column heat content	J m-2
avg_zos	263124	Time-mean sea surface height	m

Select levtype="o2d" in the Polytope Climate DT example notebooks to access these variables.

3.4 levtype=o3d¶

ICON: 72 model levels (1, …, 72) NEMO: 75 model levels: (1, …, 75) FESOM: 69 model levels: (1, …, 69)

Short name	Parameter ID	Long name	Units	Comments
avg_von	263505	Time-mean northward sea water velocity	m s-1
avg_so	263500	Time-mean sea water practical salinity	g kg-1	Only standard resolution. IFS-NEMO: see errata
avg_thetao	263501	Time-mean sea water potential temperature	K	Only standard resolution. IFS-NEMO: see errata
avg_uoe	263506	Time-mean eastward sea water velocity	m s-1	Only standard resolution
avg_wo	263507	Time-mean upward sea water velocity	m s-1	Provided on half-levels. Not available for ICON.

Select levtype="o3d" in the Polytope Climate DT example notebooks to access these variables.

3.5 levtype=hl¶

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

Short name	Parameter ID	Long name	Units	Type of Level	Level	Comments
avg_u	235131	Time-mean U component of wind	m s-1	heightAboveGround	100m	Not available for ICON
avg_v	235132	Time-mean V component of wind	m s-1	heightAboveGround	100m	Not available for ICON

Select levtype="hl" in the Polytope Climate DT example notebooks to access these variables.

3.6 levtype=sol¶

IFS: 4 model levels: (1, …, 4) (depths 0.07 m, 0.21 m, 0.72 m, 1.89 m) ICON: 5 model levels: (1, …, 5) (depths 0.065 m, 0.319 m, 1.232 m, 4.134 m, 9.834 m)

Short name	Parameter ID	Long name	Units	Comments
avg_sd	235078	Time-mean snow depth water equivalent	kg m-2	Not available for ICON
avg_vsw	235077	Time-mean volumetric soil moisture	m3 m-3
avg_sot	235094	Time-mean soil temperature	K

Select levtype="sol" in the Polytope Climate DT example notebooks to access these variables.

4. Full data layout¶

Example structure:

"class": "d1"
"dataset": "climate-dt"
"generation": "2"
"expver": "0001"
"stream": "clte"
"type": "fc"
"realization": "1"

"activity": "baseline"
"experiment": "historical"
"date": "YYYYMMDD"

"model": "ICON"
"resolution": "high"

"levtype": "o2d"
"time": "0000"
"param": 263000, 263001, ...

"levtype": "pl"
"levelist": "1000/.../1"
"time": "0000/0100/.../2300"

"levtype": "sfc"
"time": "0000/.../2300"

5. Errata¶

Across all models and experiments over the whole timespan: parameters 263003 and 263004 (avg_siue, avg_sivn: Time-mean eastward/northward sea ice velocity [m s-1]) have non-zero values in regions where parameter 263001 (avg_siconc: Time-mean sea ice area fraction [0 - 1 ]) is zero. If the sea ice area fraction is zero, then the sea ice velocities should be masked out.

ICON¶

The Orography (orog, parameter ID: 228002) is 0 everywhere.

ICON historical (climatedt-gen2-icon-baseline-hist-5km-r1):

Volumetric soil moisture (vsw, parameter ID: 260199) level 5 missing for 01.01.1990 – 31.12.2009.
Total cloud cover monthly average (avg_tcc, parameter ID: 235288) not available. See hourly values (parameter ID: 228164).

ICON projection (climatedt-gen2-icon-projections-ssp370-5km-r1):

Total cloud cover monthly average (avg_tcc, parameter ID: 235288) not available. See hourly values (parameter ID: 228164).

ICON control (climatedt-gen2-icon-baseline-cont-5km-r1):

Volumetric soil moisture (vsw, parameter ID: 260199) level 5 missing for 01.01.1990 – 31.12.2003.
Total cloud cover monthly average (avg_tcc, parameter ID: 235288) not available. See hourly values (parameter ID: 228164).
Time-mean eastward turbulent surface stress (avg_iews, parameter ID: 235041) and Time-mean northward turbulent surface stress (avg_inss, parameter ID: 235042) are not averaged but accumulated. The values are accumulated over one hour. This simulation uses a timestep of 40s, therefore this error can be corrected by dividing the hourly values by 90. Time period affected: 01.01.1990 – 31.12.1994.

IFS-NEMO¶

The output parameters in the portfolio are the EOS80 variables 263500 avg_so (practical salinity) and 263501 avg_thetao (potential temperature). For IFS-NEMO though the TEOS10 variables, i.e. absolute salinity and conservative temperature, are saved with those param IDs. This applies to both daily and monthly data.