ICON#
Model description#
ICON is a non-hydrostatic model discretised over an icosahedral as described by Zängl et al. (2015). Here it is run in a global configuration using a set up similar to that described by Klocke et al. (2017).
Contact#
Luis Kornblueh, Max Planck Institute for Meteorology (MPI-MET), DE
Data structure#
Vertical#
The number of vertical levels is chosen as 90. A detailed description of the placement of the vertical levels can be downloaded here.
Horizontal#
ICON employs horizontal grid spacing of 5km (R2B9) and 2.5km (R2B10), comprising 20 971 520 (5km)/ 83 886 080 (2.5km) grid columns.
Data#
Warning
For the grib files, cdo needs the correct grib definition path to get the variable names straight. On Levante use:
GRIB_DEFINITION_PATH=/sw/rhel6-x64/eccodes/definitions cdo [arguments]
or:
export GRIB_DEFINITION_PATH=/sw/rhel6-x64/eccodes/definitions
cdo [arguments]
Full State Variables (3D), Output Interval: PT01H
Output will be written from level 17 (ca. 40km) onwards.
u |
zonal wind |
v |
meridional wind |
w |
vertical wind |
temp |
actual temperature |
pres |
pressure |
qv |
specific humidity |
tot_qc_dia |
specific cloud water |
tot_qi_dia |
specific cloud ice |
Selected Horizontal Slices (2D), Output Interval: PT15M
u_10m |
zonal wind in 10m |
v_10m |
meridional wind in 10m |
t_2m |
temperature in 2m |
qv_2m |
specific water vapor in 2m |
tqv_dia |
total column integrated water vapor |
tqc_dia |
total column integrated cloud water |
tqi_dia |
total column integrated cloud ice |
tqg |
total column integrated graupel |
tqs |
total column integrated snow |
tqr |
total column integrated rain |
clct |
total cloud cover |
lhfl_s |
surface latent heat flux |
shfl_s |
surface sensible heat flux |
asob_s |
surface net solar radiation mean since model start |
athb_s |
surface net thermal radiation mean since model start |
asob_t |
TOA net solar radiation mean since model start |
athb_t |
TOA net thermal radiation mean since model start |
asou_t |
Top up solar radiation [W/m2], accumulated |
asodifu_s |
Surface shortwave diffuse upward flux |
athd_s |
Surface down thermal radiation [W/m2], accumulated |
athu_s |
Surface up thermal radiation [W/m2], accumulated |
pres_sfc |
surface pressure |
tot_prec |
total precipitation |
cape_ml |
conv. avail. pot. energy of mean surf. layer parcel |
cin_ml |
conv. inhib. of mean surf. layer parcel |
t_g |
ground temperature |
qv_s |
surface specific humidity |
ufml_s |
u momentum flux at surface |
vfml_s |
v momentum flux at surface |
Initialisation and Boundary conditions#
Soil Initialisation#
Initial soil data are derived from the ECMWF IFS model state at the initialisation date and time.
Input Data#
ICON uses the provided grib file with IFS data from 01 Aug 2016.
Treatment of SST and Sea Ice#
ICON uses the provided IFS data (7 day means).