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changes.mady.by.user Michela Giusti

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table1
table1
Table 1: Overview of single level variables. Some variables have not yet been uploaded to CDS, these are marked with * and unfortunately are not be included in amongst the first batch of released reanalysis data. Parameters labelled with TBD ("To Be Determined") do not yet have short name and GRIB code definitions. Most static fields (except land-sea mask and orography) marked with ** are available only as NetCDF-files below. 

Precipitation, cloud water and humidity

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

2m relative humidity

2r

%

260242

yes

yes

2m

2m specific humidity*

2sh

kg/kg

174096

yes

yes

2m

Total column integrated water vapour

tciwv

kg/m2

260057

yes

yes

vertically integrated above the surface

Total column cloud liquid water*

tclw

kg/m2

78

yesno

yes

vertically integrated above the surface

Total column cloud ice water*

tciw

kg/m2

79

yesno

yes

vertically integrated above the surface

Total column graupel*

tcolg

kg/m2

260001

yes

yes

vertically integrated above the surface

Total precipitation

tp

kg/m2

228228

no

yes

surface

Time integral of rain flux*

tirf

kg/m2

235015

no

yes

surface

Time integral of total solid precipitation flux*

titspf

kg/m2

260645

no

yes

surface

Precipitation type*

ptype

integer code

260015

no

yes

surface

Surface runoff

sro

kg/m2

174008

no

yes

surface

Percolation (drainage)

perc

kg/m2

260430

no

yes

sub-surface

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Temperature and wind speed

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

10m wind speed

10si

m/s

207

yes

yes

10m

10m wind direction

10wdir

degrees

260260

yes

yes

10m

10m u-component of wind (defined relative to the rotated model grid)

10u

m/s

165

yes

yes

10m

10m v component of wind
(defined relative to the rotated model grid)

10v

m/s

166

yes

yes

10m

10m eastward wind gust since previous post-processing*
(defined relative to the rotated model grid)

10efg

m/s

260646

no

yes

10m

10m northward wind gust since previous post-processing*
(defined relative to the rotated model grid)

10nfg

m/s

260647

no

yes

10m

10m wind gust since previous post-processing*

10fg

m/s

49

no

yes

10m

Maximum 2m temperature since previous post-processing

mx2t

K

201

no

yes

2m

Minimum 2m temperature since previous post-processing

mn2t

K

202

no

yes

2m

2m temperature

2t

K

167

yes

yes

2m

2m temperature for the sea tile*

TBD

K

TBD

yes

yes

2m

2m temperature for the inland water tile*

TBD

K

TBD

yes

yes

2m

2m temperature for the nature tile*

TBD

K

TBD

yes

yes2m

2m temperature for the urban tile*

TBD

K

TBD

yes

yes

2m

Skin temperature

skt

K

235

yes

yes

Surface

...

Accumulated fluxes

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Albedo

al

%

260509

no

yes

surface

Evaporation

eva

kg/m2

260259

no

yes

surface

Time integral of snow evaporation flux*

tisef

kg/m2

235072

no

yes

surface

Surface sensible heat flux

sshf

J/m2

146

no

yes

surface

Surface latent heat flux

slhf

J/m2

147

no

yes

surface

Time integral of surface latent heat evaporation flux*

tislhef

J/m2

235019

no

yes

surface

Time integral of surface latent heat sublimation flux*

tislhsf

J/m2

235071

no

yes

surface

Direct solar irradiation*

dsrp

J/m2

47

no

yes

surface

Time-integrated surface direct short wave radiation flux

tidirswrf

J/m2

260264

no

yes

surface

Surface net solar radiation

ssr

J/m2

176

no

yes

surface

Surface solar radiation downwards

ssrd

J/m2

169

no

yes

surface

Surface net solar radiation, clear sky*

ssrc

J/m2

210

no

yes

surface

Surface net thermal radiation

str

J/m2

177

no

yes

surface

Surface thermal radiation downwards

strd

J/m2

175

no

yes

surface

Surface net thermal radiation, clear sky*

strc

J/m2

211

no

yes

surface

Top net solar radiation*

tsr

J/m2

178

no

yes

surface

Top net thermal radiation*

ttr

J/m2

179

no

yes

surface

Time integral of surface eastward momentum flux * 

tisemf

kg⋅m/s

235017

no

yes

surface

Time integral of surface northward momentum flux*

tisnmf

kg⋅m/s

235018

no

yes

surface

Pressure

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Mean sea level pressure

msl

Pa

151

yes

yes

surface (scaled to sea level)

Surface pressure

sp

Pa

134

yes

yes

surface

Geometric cloud properties

Name

Short Name

UnitGRIB code

Param ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

High cloud cover

hcc

%

3075

yes

yes

above 5000m

Medium cloud cover

mcc

%

3074

yes

yes

2500m - 5000m

Low cloud cover

lcc

%

3073

yes

yes

surface - 2500m

Total cloud cover

tcc

%

228164

yes

yes

above ground

Fog (lowest model level cloud)*

fog

%

260648

yesno

yes

lowest model level

Visibility

vis

m

3020

yes

yes

lowest model level

Cloud base

cdcb

m

260107

yes

yes

-

Cloud top

cdct

m

260108

yes

yes

-

Snow

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Snow density

rsn

kg/m3

33

yes

yes

surface

Snow depth water equivalent

sd

kg/m2

228141

yes

yes

surface

Fraction of snow cover*

fscov

0-1

260289

yesyes

no

surface

Snow albedo*

asn

%

228032

yes

noyes

surface

Surface roughness lengths

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Surface roughness

sr

m

173

yes

no

surface

Surface roughness length for heat*

srlh

m

260651

yes

no

surface

Sea states

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Sea surface temperature (SST)

sst

K

34

yes

no

surface

Sea ice area fraction

ci

0-1

31

yes

no

surface

Sea ice surface temperature*

sist

K

260649

yes

noyes

surface

Sea-ice thickness*

sithick

m

174098

yes

no

surface

Snow on ice total depth*

sitd

m

260650

yes

yes

surface

Static fields

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Height

Land-sea mask

lsm

%

172

no

no

surface

Sea tile fraction**

NA

0-1

NA

no

no

surface

Inland water tile fraction**

NA

0-1

NA

no

no

surface

Urban tile fraction**

NA

0-1

NA

no

no

surface

Nature tile fraction**

NA

0-1

NA

no

no

surface

Glacier fraction**

NA

0-1

NA

no

no

surface

Orography

orog

m

228002

no

no

surface

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table2
table2
Table 2: Overview of soil level variables

Soil level variables

Name

Short Name

Unit

GRIB code

Param ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Volumetric soil ice

*

vsi

m³/m³

260644

yes

yes

Volumetric soil moisture

vsw

m³/m³

260199

yes

yes

Model level variables

Model level variables are output at 65 hybrid model levels of the HARMONIE-AROME model. These follow the surface at the lowest levels and are gradually evolved into pure pressure levels at the highest levels. These are the levels at which the model computations are done. The height level and pressure level variables are interpolated from these data.

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Model level variables

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2

Specific humidity

q

kg/kg

133

yes

yes

Temperature

t

K

130

yes

yes

u-component of wind (defined relative to the rotated model grid)

u

m/s

131

yes

yes

v-component of wind (defined relative to the rotated model grid)

v

m/s

132

yes

yes

Cloud cover

ccl

%

260257

yes

yes

Specific cloud liquid water content

clwc

kg/kg

246

yes

yes

Specific cloud ice water content

ciwc

kg/kg

247

yes

yes

Specific cloud rain water content

crwc

kg/kg

75

yes

yes

Specific cloud snow water content

cswc

kg/kg

76

yes

yes

Graupel

grle

kg/kg

260028

yes

yes

Turbulent kinetic energy

tke

J/kg

260155

yes

yes

...

Pressure level variables

Name

Short Name

UnitGRIB

codeParam ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Relative humidity

r

%

157

yes

yes

Temperature

t

K

130

yes

yes

u-component of wind (defined relative to the rotated model grid)

u

m/s

131

yes

yes

v-component of wind (Component defined relative to the rotated model grid)

v

m/s

132

yes

yes

Geometric vertical velocity

wz

m/s

260238

yes

yes

Cloud cover

ccl

%

260257

yes

yes

Specific cloud liquid water content

clwc

kg/kg

246

yes

yes

Specific cloud ice water content

ciwc

kg/kg

247

yes

yes

Specific cloud rain water content

crwc

kg/kg

75

yes

yes

Specific cloud snow water content

cswc

kg/kg

76

yes

yes

Graupel (snow pellets)

grle

kg/kg

260028

yes

yes

Pseudo-adiabatic potential temperature

papt

K

3014

yes

yes

Geopotential

z

m²/s²

129

yes

yes

Potential vorticity

pv

K·m²/ (kg·s)

60

yes

yes

...

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table5
table5
Table 5: Overview of height level variables

Height level variables

Name

Short Name

Unit

GRIB code

Param ID

Analysis: 0,3,...,21

Forecast: 1,2,3,…

Relative humidity

r

%

157

yes

yes

Temperature

t

K

130

yes

yes

Wind speed

ws

m/s

10

yes

yes

Wind direction

wdir

deg

3031

yes

yes

Specific cloud liquid water content

clwc

kg/kg

246

yes

yes

Specific cloud ice water content

ciwc

kg/kg

247

yes

yes

PressurepresPa54yesyes

Details about the data fields

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table6
table6
Table 6: Variables and levels for which field uncertainty estimates are provided. (Due to technical issues, there is a difference in parameter availability between the East and West domain.)

Name

Levels

Pressure

Surface as well as mean sea level

U-component of wind

Pressure levels (50 - 1000 hPa)

V-component of windy

Pressure levels (50 - 1000 hPa)

Temperature

Pressure levels (50 - 1000 hPa)

Geopotential (East domain only)

Pressure levels (50 - 1000 hPa)

Relative humidity (East domain)/Specific humidity (West domain)

Pressure levels (50 - 1000 hPa)

In section 6.5 we present uncertainties measured as statistics of actual deviations from observations (also known as verification statistics). Note that observations are a reference not identical to the actual truth, as they also will have uncertainties as well as representativeness issues. This verification statistics is provided for a set of near-surface quantities which are covered by the meteorological observation network, including 2m temperature, 10m winds and precipitation.

Field based atmospheric uncertainty estimation

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table7
table7
Table 7: Climatological analysis error standard deviation for surface pressure and mean sea level pressure for the CARRA-East domain.

Name

Short name

Unit

Level

Summer statistics

Winter statistics


Upper Bound STDV

Refined STDV

Upper Bound STDV

Refined STDV

Surface pressure

sp

Pa

0m above ground

37.20

26.78

41.14

38.67

Mean sea level pressure

msl

Pa

0m above sea level

38.18

27.49

42.15

39.62

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figure2
figure2

Figure 2: Climatological analysis error standard deviation for u-component of wind: summer statistics (left), winter statistics (right) as function of standard vertical pressure levels for the CARRA-East domain.

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table13
table13
Table 13: Climatological analysis error standard deviation for surface pressure and mean sea level pressure for the CARRA-West domain.

Name

Short name

Unit

Level

Upper Bound STDV

Refined STDV

Surface pressure

sp

Pa

0m above ground

26.11

7.04

Mean sea level pressure

msl

Pa

0m above sea level

39.44

10.64

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figure7
figure7

Figure 7: Climatological analysis error standard deviation for u-component of wind (left plot) and for v-component of wind (right plot) as function of standard vertical pressure levels for the CARRA-West domain.

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table14
table14
Table 14: Climatological analysis error standard deviation for u-component of wind for the CARRA-West domain. 

Name

Short name

Unit

Level

Upper Bound STDV

Refined STDV

u-component of wind

u

m/s

50hPa

0.540

0.146

u-component of wind

u

m/s

100hPa

0.370

0.100

u-component of wind

u

m/s

150hPa

0.447

0.121

u-component of wind

u

m/s

200hPa

0.611

0.165

u-component of wind

u

m/s

250hPa

0.732

0.198

u-component of wind

u

m/s

300hPa

0.871

0.235

u-component of wind

u

m/s

400hPa

0.869

0.235

u-component of wind

u

m/s

500hPa

0.862

0.233

u-component of wind

u

m/s

600hPa

0.887

0.240

u-component of wind

u

m/s

700hPa

0.893

0.241

u-component of wind

u

m/s

800hPa

0.856

0.231

u-component of wind

u

m/s

850hPa

0.831

0.224

u-component of wind

u

m/s

900hPa

0.810

0.219

u-component of wind

u

m/s

925hPa

0.803

0.217

u-component of wind

u

m/s

950hPa

0.799

0.216

u-component of wind

u

m/s

1000hPa

0.773

0.209

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table15
table15
Table 15: Climatological analysis error standard deviation for v-component of wind for the CARRA-West domain. 

Name

Short name

Unit

Level

Upper Bound STDV

Refined STDV

v-component of wind

v

m/s

50hPa

0.535

0.144

v-component of wind

v

m/s

100hPa

0.360

0.097

v-component of wind

v

m/s

150hPa

0.449

0.135

v-component of wind

v

m/s

200hPa

0.603

0.162

v-component of wind

v

m/s

250hPa

0.714

0.193

v-component of wind

v

m/s

300hPa

0.851

0.230

v-component of wind

v

m/s

400hPa

0.853

0.230

v-component of wind

v

m/s

500hPa

0.852

0.230

v-component of wind

v

m/s

600hPa

0.877

0.237

v-component of wind

v

m/s

700hPa

0.884

0.239

v-component of wind

v

m/s

800hPa

0.852

0.230

v-component of wind

v

m/s

850hPa

0.826

0.223

v-component of wind

v

m/s

900hPa

0.801

0.216

v-component of wind

v

m/s

925hPa

0.794

0.214

v-component of wind

v

m/s

950hPa

0.792

0.214

v-component of wind

v

m/s

1000hPa

0.763

0.206

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figure8
figure8

Figure 8: Climatological analysis error standard deviation for temperature (left plot) and specific humidity (right plot) as a function of standard pressure levels for the CARRA-West domain.

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table16
table16
Table 16: Climatological analysis error standard deviation for temperature for the CARRA-West domain.

Name

Short name

Unit

Level

Upper Bound STDV

Refined STDV

temperature

t

K

50hPa

0.130

0.035

temperature

t

K

100hPa

0.112

0.030

temperature

t

K

150hPa

0.169

0.045

temperature

t

K

200hPa

0.276

0.075

temperature

t

K

250hPa

0.285

0.077

temperature

t

K

300hPa

0.263

0.071

temperature

t

K

400hPa

0.227

0.061

temperature

t

K

500hPa

0.235

0.063

temperature

t

K

600hPa

0.259

0.070

temperature

t

K

700hPa

0.350

0.095

temperature

t

K

800hPa

0.473

0.128

temperature

t

K

850hPa

0.500

0.135

temperature

t

K

900hPa

0.508

0.137

temperature

t

K

925hPa

0.509

0.137

temperature

t

K

950hPa

0.520

0.140

temperature

t

K

1000hPa

0.542

0.146

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table17
table17
Table 17: Climatological analysis error standard deviation for specific humidity for the CARRA-West domain.

Name

Short name

Unit

Level

Upper Bound STDV

Refined STDV

specific humidity

r

g/kg

50hPa

0.

0.

specific humidity

r

g/kg

100hPa

0.

0.

specific humidity

r

g/kg

150hPa

0.

0.

specific humidity

r

g/kg

200hPa

0.001

0.0002

specific humidity

r

g/kg

250hPa

0.002

0.0004

specific humidity

r

g/kg

300hPa

0.006

0.001

specific humidity

r

g/kg

400hPa

0.020

0.005

specific humidity

r

g/kg

500hPa

0.048

0.013

specific humidity

r

g/kg

600hPa

0.082

0.022

specific humidity

r

g/kg

700hPa

0.113

0.031

specific humidity

r

g/kg

800hPa

0.127

0.034

specific humidity

r

g/kg

850hPa

0.126

0.034

specific humidity

r

g/kg

900hPa

0.119

0.032

specific humidity

r

g/kg

925hPa

0.115

0.031

specific humidity

r

g/kg

950hPa

0.112

0.030

specific humidity

r

g/kg

1000hPa

0.099

0.027

Questions & Answers on field uncertainty estimates

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