Versions Compared

Old Version 43

changes.mady.by.user Richard Mladek

Saved on

compared with

New Version Current

changes.mady.by.user Richard Mladek

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Below is a list of all agreed upon parameters. Participating Centres are expected to produce output fields in GRIB2 data format and with consistent units. All units are defined by the WMO in the GRIB2 manual. For more information please refer to Guide to the WMO Table Driven Code Form.

 

Info
titleWork in progress (temporary)

Image Removed  

Remarks:

  • ***  should be confirmed by UERRA
  • ???  should be reviewed by GRIB-API team
  • +++ parameter must be added to GRIB-API
  • in red colour  WMO GRIB2 definition does not exist yet

Attached documents to this page which were used for creation of GRIB2 UERRA definitions:

  • radiation_in_mars.pdf (to understand the radiation fluxes)
  • Parameter_table_20150427.docx (the latest official version of agreed upon UERRA parameters)

Useful links:

 

For the actual availability of UERRA parameters from each model in MARS refer to the page Parameter availability.

Model level parameters

Output of analyses on (hybrid) model levels are stored up to a height of about 15km every six hours (at 00/06/12/18UTC).

Model level increases with height for MO and decreases for other models.

  • COSMO: 1..40
  • HARMONIE: 1..65
  • MO: 1..63
NameAbbreviationUnit
Cloud cover
+++
 
cc
ccl%
PressurepresPa
Specific cloud liquid water contentclwckg kg-1
Specific cloud ice water contentciwckg kg-1
Specific humidityqkg kg-1
TemperaturetK
U-velocityum s-1
V-velocityvm s-1

Pressure level parameters

...

● T+1,2,3,4,5,6 started at 06 UTC and 18 UTC

NameAbbreviationUnit
Cloud cover
+++
cc
ccl%
Geopotential heightghgpm
Geopotentialzm2 s-2
Specific cloud liquid water contentclwckg kg-1
Specific cloud ice water contentciwckg kg-1
Relative humidity
***
r%
TemperaturetK
U-velocityum s-1
V-velocityvm s-1

Height level parameters

Output of forecasts and analyses on pressure levels for defined time steps.

...

● T+1,2,3,4,5,6 started at 06 UTC and 18 UTC

NameAbbreviationUnit
Cloud cover
+++
cc
ccl%
PressurepresPa
Specific cloud liquid water contentclwckg kg-1
Specific cloud ice water contentciwckg kg-1
Relative humidity
***
  r%
TemperaturetK
Wind speedwsm s-1
Wind direction
+++
wd
wdir
deg
degree true

Surface level parameters 

...

● Store analysis output in six hourly intervals (at 00/06/12/18UTC) for the Unified Model, Harmonie, MESCAN-SURFEX

● Store precipitation analysis  (24 h accumulation from 06 UTC to 06 UTC of next day) output at 06TC for MESCAN-SURFEX

● Store hourly analysis output for COSMO, MESAN, SURFEX

Forecast:

● Store forecast output at T+1,2,3,4,5,6,9,12,15,18,21,24,27,30 started at 00 UTC and 12 UTC for the Unified Model, COSMO, Harmonie

● Store forecast output at T+1,2,3,4,5,6 started at 06 UTC and 18 UTC for the Unified Model, COSMO, Harmonie

● For Harmonie (started at 00/06/12/18UTC):

      • Store sd, sr, al, rsn, slhf, sshf parameters (derived from ALADIN model driving SURFEX) at T+1,2,3,4,5,6 only
      • Store all other parameters at T+1,2,3,4,5,6,9,12,15,18,21,24,27,30

● For MESCAN-SURFEX (started at 00/06/12/18UTC):

      • Store parameters sp,tp,2r,2t,10si,10wdir, tidirswrf from  forecast output at T+6 only (fields from ALADIN model driving SURFEX)
      • Store all other parameters from forecast output at T+1,2,3,4,5,6


Info
titleStatic fields

Static fields are archived only as of the analysis type. For users' convenience, even they are invariant fields, they should be archived for all analysis output times. In case of ensemble products they should be archived with all ensemble members (again as of the analysis type only).

The surface roughness could be either static or changing parameter depending on model and  should be handled accordingly as a static or a prognostic model field.


NameAbbreviationUnit
original name (temporary)

Precipitation and humidity



Percolation 
   Drainage *** +++
 d
perckg m-2
  2 metre
Surface air relative humidity
*** +++

2r%
 
Surface
water +++
runoff 
***

srokg m-2
 
Total column water vapour
tcw
tciwvkg m-2
 
Total precipitation tpkg m-2
 

Accumulated radiation fluxes

   



Albedoal%
 
Evaporation
*** +++e
evakg m-2
 Surface
Time-integrated surface latent heat fluxslhf
J
W m-2

 

Surface
s
Time-integrated surface sensible heat fluxsshf
J
W m-2
s
Time-integrated surface

 

Surface
clear-sky solar radiation downwards
*** +++scsrd
adswrf_csW
J Surface
m-2 s

Clear-sky short-wave downward flux at the surface

Time-integrated surface clear-sky solar radiation upwards
  *** +++
auswrf_cs W
scsru J Surface
m-2 s

Clear-sky short-wave upward flux at the surface

Time-integrated surface direct solar radiation

   *** +++


tidirswrfW
sdsr J Surface
m-2 s

Direct short-wave radiation flux at the surface

Time-integrated surface net solar radiationssr
J Surface
W m-2 s

Net short-wave radiation flux at the surface

Time-integrated surface solar radiation downwardsssrd
J Surface
W m-2 s

Total short-wave radiation flux at the surface

Time-integrated surface clear-sky thermal radiation downwards
***+++
adlwrf_csW
strcdJ Surface
m-2 s
Clear-sky long-wave downward flux at the surface
Time-integrated surface net thermal radiation
str
J Surface
W m-2 s

Net long-wave radiation flux at the surface

Time-integrated surface thermal radiation downwards
strd
J
W m-2
Long-wave downward flux at the surface
s

Temperature and wind speed

 

  


10 metre wind speed
+++
10ws
10sim s-1
10m wind speed
10 metre wind direction
+++
10wd
10wdir
deg

10m wind direction

10m wind gust in the last 24h +++10fg24
degree true
10 metre wind gust since previous post-processing 
10fgm s-1
 
Surface air maximum temperature since previous post-processing
*** +++
mx2tK
Maximum [1.5 m | 2 m] temperature since previous post-processing
Surface air minimum temperature since previous post-processing
*** +++2 metre temperature ***
mn2tK

Minimum [1.5 m | 2 m] temperature since previous post-processing

Surface air temperature2tK

[1.5 | 2 ] m temperature

Skin temperature
***
sktK
Surface temperature

Pressure/Height

  

 


Mean sea level pressuremslPa
 
Surface pressurespPa
 

Cloud properties

   



High cloud cover
*** +++
hcc%
 
Low cloud cover
*** +++
lcc%
 
Medium cloud cover
*** +++
mcc%
 
Total cloud covertcc%
 

Snow

   



Snow densityrsnkg m-3
 
Snow depth
sd ???
sdem
 
Snow depth water equivalentsd
???
kg m-2
Water equivalent of accumulated snow depth
Snow fall water equivalentsfkg m-2
Accumulated total snowfall

Soil



Soil
    Liquid soil water index for 5cm   *** +++
    Liquid soil water index for the first cm *** +++     Liquid soil water index in the root zone *** +++    

Total soil water index for 5cm   *** +++

   

Total soil water index for the first cm *** +++

   

Total soil water index in the root zone *** +++

   Soil heat flux ***   

Soil temperature ***

stK

Soil temperature level 1/2/3/4

heat fluxsohf
W m-2

Static fields



Land-sea masklsm(0-1)
Orographyoroggpm
Surface roughnesssrm

Soil level parameters 

Time steps: the same as surface level parameters

Soil levels: parameters should be provided on original model levels or layers

  • COSMO: 8 soil layers
    level borders at 0, 0.01, 0.03, 0.09, 0.27, 0.81, 2.43, 7.29, 21.87 m
  • HARMONIE: 3 soil levels/layers (sot on levels, vsw on layers)
    level depths are grid dependent
  • MESCAN-SURFEX: 14 soil layers (only 6 layers for preliminary shorter re-analysis runs)
    level borders at 0, 0.01, 0.04, 0.1, 0.2, 0.4, 0.6 m 
  • MO: 4 soil layers
    level borders at  0, 0.1, 0.35, 1 and 3 m
Info
titleSoil depth

The soil depth could be either a constant or a grid dependent parameter depending on given model soil scheme.

If constant, the soil depths should be mentioned only in documentation of given model.

If grid dependent it should be archived the same as other static fields for all analysis output times. In case of ensemble products it should be archived with all ensemble members (again as of the analysis type only).


Soil

AbbreviationUnit
Liquid non-frozen volumetric soil waterliqvsmm3 m-3

Soil temperature

sotK
Soil depthsodm
Volumetric field capacity voltso

Volumetric soil moisture ***

vsw
m3 m-3

Volumetric soil water

layer 1/2/3/4

Static fields

   Land-sea mask ***lsm(0-1)Land coverOrography ***oroggpm Surface roughness ***srm 

vswm3 m-3
Volumetric wilting point   vwiltmm3 m-3

Attached documents to this page which were used for creation of GRIB2 UERRA definitions (they are linked above too):

  • radiation_in_mars.pdf (to understand the radiation fluxes)
  • Parameter_table_20150427.docx (the latest official version of agreed upon UERRA parameters)