EU-Confidence Case data Harmonie-AROME Parameters

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Harmonie-AROME parameter codes

The Harmonie-AROME data use code values to indicate the various characteristics of the data. The most relevant in this context are the meteorological parameter, the level type and time range indicator.

Meteorological parameters

This is a list of all Harmonie-AROME 38 meteorological parameters that are available on surface (sfc) or model levels (ml).

Accumulated parameters (accu) are accumulated from the start of the forecast. The Wind gust is valid between two model time steps.

Parameter Nivo  
GRIB ecCodes Naam sfc ml accu
1 pres Pressure
6 z Geopotential relative to mean sea level
11 t Temperature (sfc, msl and ml)
17 td Dew point temperature
20 vis Visibility
33 10u 10m wind: u-component
34 10v 10m wind: v-component
33 u Wind: u-component
34 v Wind: v-component
40 tw Vertical velocity  
51 q Specific humidity (2m and ml)
52 r Relative humidity
54 tcwv Total column water vapour
67 mld Height (in meters) of the model PBL
71 tcc Total Cloud Cover
73 lcc Low cloud cover
74 mcc Medium cloud cover
75 hcc High cloud cover
81 lsm Land-sea mask
111 nswrs Net short-wave radiation flux (surface)
112 nlwrs Net long-wave radiation flux (surface)
113 nswrt Net short-wave radiation flux (top.atm)
114 nlwrt Net long-wave radiation flux (top.atm)
116 swavr Short wave radiation flux
117 grad Global radiation flux
122 sshf Sensible heat flux
130 cssw Short wave net clear sky radiation
131 cslw Long wave net clear sky radiation
135 icei Icing index
160 cape CAPE
162 ugst Gust, u-component
163 vgst Gust, v-component
181 rain Rain
184 snow Snow
186 cb Cloud base
187 ct Cloud top
201 grpl Graupel
209 lgt Lightning

Harmonie-AROME level types

level type WMO/HIRLAM type definition Units notes
001 Ground or water surface 0  
002 Cloud base level 0  
004 Level of 0°C isotherm 0  
006 Maximum wind level 0  
007 Tropopause 0  
008 Top-of-atmosphere  
020 Isothermal level Temperature in 1/100 K  
100 Isobaric level hPa  
103 Specified altitude above mean sea level Altitude in m  
105 Specified height above ground Altitude in m  
107 Sigma level Sigma value in 1/10000  
109 Hybrid level  
113 Isentropic (theta) level Potential temperature in K  
117 Potential vorticity surface 10-9 K m2 kg-1 s-1  
200 Entire atmosphere (considered as a single layer) Vertically integrated

Harmonie-AROME time range indicators

Code Definition
0 Forecast product valid for reference time + P1 (P1 > 0), or Uninitialized analysis product for reference time (P1 = 0)
2 Product with a valid time ranging between reference time + P1 and reference time + P2. Used for min/max values
4 Accumulation (reference time + P1 to reference time + P2) product considered valid at reference time + P2
Hans de Vries, June 7, 2018