Types

type_icon

Description: Containing the atmospheric quantities extract from ICON (directly or post-processe)

Variable	Dimensions	Units	Description	ICON variable	Comments
nlat
nlon
height
mode			Type of horizontal grid coordinates		1: track, 2: lon-lat, 3: lat-lon
nlevels
npoints
lat	npoints	$\degree \mathrm{N}$	Latitude	lat	-90° to 90°
lon	npoints	$\degree \mathrm{E}$	Longitude	lon	0° - 360°
lat_orig	npoints	$\degree \mathrm{N}$	Original latitude	lat	-90° to 90°
lon_orig	npoints	$\degree \mathrm{E}$	Original longitude	lon	0° - 360°
orography	npoints	$\mathrm{m}$	Elevation	topography_c
landmask	npoints	-	Surface type	FR_LAND
skt	npoints	$\mathrm{K}$	Surface skin temperature	t_s
psfc	npoints	$\mathrm{Pa}$	Surface pressure	ps
t2m	npoints	$\mathrm{K}$	2m temperature	tas
q2m	npoints	$\mathrm{kg}~\mathrm{kg}^{-1}$	2m specific water vapor content	huss
u_wind	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	U-component of wind	u_10m
v_wind	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	V-component of wind	v_10m
p	npoints, nlayers	$\mathrm{Pa}$	Model pressure levels	pres
z	npoints, nlayers	$\mathrm{m}$	Model level height	z_mc
zh	npoints, nlevels	$\mathrm{m}$	Model level height at half-levels	z_ifc
t	npoints, nlayers	$\mathrm{K}$	Temperature	ta
q	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Specific humidity	hus
tca	npoints, nlayers	-	Total cloud fraction	clc
clw	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Specific cloud water content	clw
cli	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Specific cloud ice content	cli
qnc	npoints, nlayers	$\mathrm{m}^{-3}$	Cloud droplet number concentration	qnc
qr	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Rain mixing ratio	qr
qs	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Snow mixing ratio	qs
dz	npoints, nlayers	$\mathrm{m}$	Layer thickness
rho	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Moist air density
tv	npoints, nlayers	$\mathrm{K}$	Virtual temperature
lwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Liquid water content
iwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Ice water content
cdnc	npoints, nlayers	$\mathrm{m}^{-3}$	Cloud droplet number concentration
Reff	npoints, nlayers	$\mu \mathrm{m}$	Cloud droplet effective radius

type_model

Description: Containing the physical description of the atmospheric model (read from inputs)

Using this type: model

Variable	Dimensions	Units	Description	RTTOV	Comments
npoints	-	-	Number of profiles
nlevels	-	-	Number of vertical levels in profile
nlayers	-	-	Number of vertical layers in profile		nlevels - 1
nlat	-	-	Number of latitude bins in grid
nlon	-	-	Number of longitude bins in grid
mode	-	-	Type of input grid
date	3	-	Day, Month, Year
time	3	-	Hour, Minute, Second
lat	npoints	$\degree \mathrm{N}$	Latitude		-90° to 90°
lon	npoints	$\degree \mathrm{E}$	Longitude		0° - 360°
lat_orig	npoints	$\degree \mathrm{N}$	Original latitude (if regridded)	❌	-90° to 90°
lon_orig	npoints	$\degree \mathrm{E}$	Original longitude (if regridded)	❌	0° - 360°
skt	npoints	$\mathrm{K}$	Surface skin temperature
orography	npoints	$\mathrm{km}$	Elevation
psfc	npoints	$\mathrm{hPa}$	Surface pressure
u_wind	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	10-m zonal wind
v_wind	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	10-m medional wind
t2m	npoints	$\mathrm{K}$	2-m air temperature
q2m	npoints	$\mathrm{kg}~\mathrm{kg}^{-1}$	2-m water pressure
landmask	npoints	-	Surface type
sunzenangle	npoints	$\degree \mathrm{S}$	Solar zenith angle		0 is Zenith
sunazangle	npoints	$\degree \mathrm{E}$	Solar azimuth angle		0 is North
p	npoints, nlevels	$\mathrm{hPa}$	Pressure levels
z	npoints, nlevels	$\mathrm{m}$	Height levels	❌
dz	npoints, nlayer	$\mathrm{m}$	Size of height levels	❌
zh	npoints, nlevels	$\mathrm{m}$	Height at half levels	❌
t	npoints, nlevels	$\mathrm{K}$	Temperature on levels
q	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	Water vapour on levels
o3	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	Ozone concentration on levels
co2	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CO}_2$ concentration on levels
ch4	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CH}_4$ concentration on levels
n2o	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{N}_2\mathrm{O}$ concentration on levels
so2	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{SO}_2$ concentration on levels
co	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CO}$ concentration on levels
tca	npoints, nlayers	-	Cloud fraction
iwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Ice Water Content
lwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Liquid Water Content	❌
reff	npoints, nlayers	$\mu \mathrm{m}$	Cloud droplet effective radius
cdnc	npoints, nlayers	$\mathrm{m}^{-3}$	Cloud droplet number concentration	❌
qnc	npoints, nlayers	$\mathrm{m}^{-3}$	Cloud droplet number concentration	❌
qr	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Rain mass mixing ratio	❌
qs	npoints, nlayers	$\mathrm{kg}~\mathrm{kg}^{-1}$	Snow mass mixing ratio	❌

type_rttov_atm

Description: Pointer array containing the physical description of the atmospheric model necessary to run RTTOV.

Using this type: rttov_atm (points to model but used for smaller number of profiles)

Variable	Dimensions	Units	Description	Comments
idx_start	-	-	Starting index for profile	Used for subsetting
idx_end	-	-	Ending index for subset profile
npoints	-	-	Number of profiles	idx_end - idx_start + 1
nlevels	-	-	Number of vertical levels in profile
nlayers	-	-	Number of vertical layers in profile	nlevels - 1
lat	npoints	$\degree \mathrm{N}$	Latitude	-90° to 90°
lon	npoints	$\degree \mathrm{E}$	Longitude	0° - 360°
t_skin	npoints	$\mathrm{K}$	Surface skin temperature
h_surf	npoints	$\mathrm{km}$	Elevation
p_surf	npoints	$\mathrm{hPa}$	Surface pressure
u_surf	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	10-m zonal wind
v_surf	npoints	$\mathrm{m}~\mathrm{s}^{-1}$	10-m medional wind
t2m	npoints	$\mathrm{K}$	2-m air temperature
q2m	npoints	$\mathrm{kg}~\mathrm{kg}^{-1}$	2-m water pressure
lsmask	npoints	-	Surface type	land = 0; sea = 1; seaice = 2
p	npoints, nlevels	$\mathrm{hPa}$	Pressure levels
z	npoints, nlevels	$\mathrm{m}$	Height levels	Not used in RTTOV
t	npoints, nlevels	$\mathrm{hPa}$	Temperature on levels
q	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	Water vapour on levels
o3	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	Ozone concentration on levels
co2	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CO}_2$ concentration on levels
ch4	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CH}_4$ concentration on levels
n2o	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{N}_2\mathrm{O}$ concentration on levels
so2	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{SO}_2$ concentration on levels
co	npoints, nlevels	$\mathrm{kg}~\mathrm{kg}^{-1}$	$\mathrm{CO}$ concentration on levels
tca	npoints, nlayers	-	Cloud fraction
iwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Ice Water Content
lwc	npoints, nlayers	$\mathrm{kg}~\mathrm{m}^{-3}$	Liquid Water Content	Not used in RTTOV
reff	npoints, nlayers	$\mu \mathrm{m}$	Cloud droplet effective radius
cdnc	npoints, nlayers	$\mathrm{m}^{-3}$	Cloud droplet number concentration	Not used in RTTOV