Requested output

We ask for a NetCdf file which contains:

• surface variables

• profiles of state variables at full levels

• profiles of fluxes on half levels

• profiles of soil parameters

• profiles of forcings as prescribed for this case at model levels

• profiles of the initial state as prescribed for this case

All data should be given as 10-min averages.

Filename

The filename should be composed as: gabls_urban_scm_<institute>_<model>_<ver>.nc where:

• institute name or acronym of your institute

• model acronym of your model

• phase phase of the experiment (0 or 1)

• stage stage of the experiment (1-3)

• ver two digit version number of your submission prepended with a v (v01, v10, v11, etc)

example: gabls_urban_scm_wur_wrf_0_1_v03.nc

Global attributes

All relevant meta information should be added to the file as global attributes. This should include:

General

• reference to the model

• contact person.

• type of model where the SCM is derived from (climate model, mesoscale weather prediction model, regional model) ?

• time step

Surface scheme properties

Describe the level op complexity of the urban canopy scheme. Is there a tile approach?

Turbulence scheme

Turbulence scheme (e.g., K profile, TKE-l, ...) Formulation of eddy diffusivity K. For E-l and Louis-type scheme: give formulation length scale. For K-profile: how is this profile determined ? (e.g., based on Richardson, Brunt-Vaisala frequency (N^2), Parcel method, other.

Initial profiles

Include the initial profiles in the mean state section as the first time step at 0 seconds. Here we assume that the model is in eta coordinates and has a specific structure in the use of full levels and half level. If your model differs in this respect please adapt the output to fit with your model.

Sign convention

Surface energy fluxes (shf, lhf, g, qf) are positive when directed away from the surface. Surface radiation fluxes (qdw, qup, ldw, lup) are positive.

NetCdf dimensions and variables

Variables and dimensions should have the names as specified below (all lower case). Use the unlimited option for the "time" dimension or at least be sure that "time" is the slowest varying dimension in two dimensional variables. Each variable should have an attribute "units" with the unit prescribed as below. Each variable should have an attribute "long_name" which explains the meaning of the variable. The exact formulation is free, but could be taken from the description below. If a variable is not available for your model, use the attribute _FillValue to prescribe the numerical value that defines not available. All physical variables should be of type float.

Dimensions

Name	Description
time	number of output times
levf	number of full levels
levh	number of half levels
levs	number of soil levels

TODO: variables corresponding to the dimenension (netcdf requirement) and further grid description (eta levels)

{time} seconds since 2006-07-01 12:00:00 [s] {afull} {bfull} {ahalf}

Variables

Time series output

Name	Long name	Units
ldw	long wave downward radiation at surface	W/m2
lup	long wave upward radiation at surface	W/m2
qdw	short wave downward radiation at surface	W/m2
qup	short wave upward radiation at surface	W/m2
tsk	temperature skin layer	W/m2
g	soil heat flux	W/m2
shf	sensible heat flux	W/m2
lhf	latent heat flux	W/m2
qf	anthropogenic heat flux	W/m2
ustar	friction velocity	m/s
hpbl	boundary layer height	m
t2m	2m temperature	K
q2m	2m specific humidity	kg/kg
u10m	10m u-component wind	m/s
v10m	10m v-component wind	m/s
cc	cloud cover fraction	0 1

Mean state {time}

Name	Long name	Units
zf	height of full level	m
pf	pressure at full level	Pa
t	temperature	K
th	potential temperature	K
q	specific humidity	kg/kg
u	zonal component wind	m/s
v	meridional component wind	m/s

Prescribed forcings {time} ({levf} or {levh})

Name	Long name	Units
ugeo	u-component geostrophic wind	m/s
vgeo	v-component geostrophic wind	m/s
dudt_ls	u-component momentum advection	m/s/s
dvdt_ls	v-component momentum advection	m/s/s
dtdt_ls	temperature advection	K/s
dqdt_ls	moisture advection	kg/kg/s
ome	vertical movement	Pa/s

Fluxes {time}

Name	Long name	Units
zh	height of half level	m
ph	pressure at half level	Pa
wt	vertical temperature flux	Km/s
wq	vertical moisture flux	kg/kg m/s
uw	vertical flux u-component momentum	m2/s2
vw	vertical flux v-component momentum	m2/s2
Km	eddy diffusivity momentum	m2/s
Kh	eddy diffusivity heat	m2/s
TKE	turbulent kinetic energy	m^2/s^2
shear	shear production	m2/s3
buoy	buoyancy production	m2/s3
trans	total transport	m2/s3
dissi	dissipation	m2/s3

Soil variables {time}

Name	Long name	Units
zs	height of soil level	m
ts	soil temperature	K
ths	soil water content	m3/m3