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Auxiliary land invariant parameters are attached here below, already interpolated to a regular lat/lon grid of 0.1°x0.1°. Relevant information about how to use/interpret these fields are in chapter 8 of https://www.ecmwf.int/en/elibrary/18714-ifs-documentation-cy45r1-part-iv-physical-processes, and plots of these fields are in chapter 11.

Table 1: surface parameters: invariants (in time)

name

units

shortName

paramId

GRIB1GRIB2netCDF4

Geopotential (GRIB version 1)

Geopotential (GRIB version 2)

Geopotential (netCDF4)

m**2 s**-2z129xx



x

Lake cover (GRIB version 2)

Lake cover (netCDF4)

(0-1)cl26
xx

Land-sea mask (GRIB version 2)

Land-sea mask (netCDF4)

(0-1)lsm172
x


x

Low vegetation cover (GRIB version 2)

Low vegetation cover((netCDF4))

(0 - 1)

cvl

27


xx

High vegetation cover (GRIB version 2)

High vegetation cover((netCDF4))

(0 - 1)

cvh

28


xx

Surface roughness (GRIB version 1)

Surface roughness (netCDF4)

msr173x
x

Soil type (GRIB version 2)

Soil type (netCDF4)

~

slt

43


xx

Type of low vegetation (GRIB version 1)

Type of low vegetation (netCDF4)

~

tvl

29

x


x

Type of high vegetation (GRIB version 1)

Type of high vegetation (netCDF4)

~

tvh

30

x


x

...

Note that in the tables below, "an" and "fc" is just a label used for convention to archive the data in MARS. 

Table

...

2: stream=oper/mnth/moda, levtype=sfc: surface parameters: instantaneous


name

units

Variable name in CDS

shortName

paramId

an

fc

GRIB1GRIB2Used as forcing field
1

Lake mix-layer temperature

K

lake_mix_layer_temperature

lmlt

228008

x


x

2

Lake mix-layer depth

m

lake_mix_layer_depth

lmld

228009

x


x

3

Lake bottom temperature

K

lake_bottom_temperature

lblt

228010

x


x

4

Lake total layer temperature

K

lake_total_layer_temperature

ltlt

228011

x


x

5

Lake shape factor

dimensionless

lake_shape_factor

lshf

228012

x


x

6

Lake ice temperature

K

lake_ice_temperature

lict

228013

x


x

7

Lake ice depth

m

lake_ice_depth

licd

228014

x


x

8Snow cover%snow_coversnowc260038
x
x
9Snow depthmsnow_depthsde3066
x
x
10

Snow albedo

(0 - 1)

snow_albedo

asn

32

x


x

11

Snow density

kg m**-3

snow_density

rsn

33

x


x

12

Volumetric soil water layer 11

m**3 m**-3

volumetric_soil_water_layer_1

swvl1

39

x


x

13

Volumetric soil water layer 21

m**3 m**-3

volumetric_soil_water_layer_2

swvl2

40

x


x

14

Volumetric soil water layer 31

m**3 m**-3

volumetric_soil_water_layer_3

swvl3

41

x


x

15

Volumetric soil water layer 41

m**3 m**-3

volumetric_soil_water_layer_4

swvl4

42

x


x

16

Leaf area index, low vegetation2

m**2 m**-2

leaf_area_index_low_vegetation

lai_lv

66


x

x

17

Leaf area index, high vegetation2

m**2 m**-2

leaf_area_index_high_vegetation

lai_hv

67


x

x

18

Surface pressure

Pa

surface_pressure

sp

134


x

x
x
19

Soil temperature level 11

K

soil_temperature_level_1

stl1

139

x


x

20

Snow depth water equivalent

m of water equivalent

snow_depth_water_equivalent

sd

141

x


x

21

10 metre U wind component

m s**-1

10m_u_component_of_wind

u10

165


x

x
x
22

10 metre V wind component

m s**-1

10m_v_component_of_wind

v10

166


x

x
x
23

2 metre temperature

K

2m_temperature

2t

167


x

x

24

2 metre dewpoint temperature

K

2m_dewpoint_temperature

2d

168


x

x

25

Soil temperature level 21

K

soil_temperature_level_2

stl2

170

x


x

26

Soil temperature level 31

K

soil_temperature_level_3

stl3

183

x


x

27

Skin reservoir content

m of water equivalent

skin_reservoir_content

src

198

x





28

Skin temperature

K

skin_temperature

skt

235

x


x

29

Soil temperature level 41

K

soil_temperature_level_4

stl4

236

x


x

30

Temperature of snow layer

K

temperature_of_snow_layer

tsn

238

x


x

31

Forecast albedo

(0 - 1)

forecast_albedo

fal

243


x

x

...

2 Leaf Area Index (LAI) parameters are based on a monthly climatology as explained IFS model documentation CY45R1. So the users will only see monthly variability, but not inter-annual variability.

Table

...

3: stream=oper/mnth/moda, levtype=sfc: surface parameters: accumulations


name

units

Variable name in CDS

shortName

paramId

an

fc

GRIB1GRIB2Used as forcing field
1

Surface runoff

m

surface_runoff

sro

8


x

x

2

Sub-surface runoff

m

sub_surface_runoff

ssro

9


x

x

3

Snowmelt

m of water equivalent

snowmelt

smlt

45


x

x

4

Snowfall

m of water equivalent

snowfall

sf

144


x

x
x
5Surface sensible heat fluxJ m**-2surface_sensible_heat_fluxsshf146
xx

6Surface latent heat fluxJ m**-2surface_latent_heat_fluxslhf147
xx

7Surface solar radiation downwardsJ m**-2surface_solar_radiation_downwardsssrd169
xx
x
8Surface thermal radiation downwardsJ m**-2surface_thermal_radiation_downwardsstrd175
xx
x
9Surface net solar radiationJ m**-2surface_net_solar_radiationssr176
xx
x
10Surface net thermal radiationJ m**-2surface_net_thermal_radiationstr177
xx
x
11

Total Evaporation

m of water equivalent

total_evaporation

e

182


x

x

12

Runoff

m

runoff

ro

205


x

x

13

Total precipitation

m

total_precipitation

tp

228


x

x
x
14Evaporation from the top of canopym of water equivalentevaporation_from_the_top_of_canopyevatc228100
x
x
15Evaporation from bare soilm of water equivalentevaporation_from_bare_soilevabs228101
x
x
16Evaporation from open water surfaces excluding oceansm of water equivalentevaporation_from_open_water_surfaces_excluding_oceansevaow228102
x
x
17Evaporation from vegetation transpirationm of water equivalentevaporation_from_vegetation_transpirationevavt228103
x
x
18

Potential evaporation

m

potential_evaporation

pev

228251


x

x

...