Parameter name

Class

Type

Default
value

Explanation

adjust_mixing_length

I

L

.F.

Near-surface adjustment of the mixing length to the Prandtl-layer law.

alpha_surface

I

R

0.0

Inclination of the model domain with respect to the horizontal (in degrees).

averaging_interval

R

R

0.0

Averaging interval for all output of temporally averaged data (in s).

averaging_interval_pr

R

R

value of averaging_
interval

Averaging interval for vertical profiles output to local file DATA_1D_PR_NETCDF and/or  PLOT1D_DATA (in s). 

averaging_interval_sp

P

R

value of averaging_
interval

Averaging interval for spectra output to local file DATA_1D_SP_NETCDF and/or  PLOTSP_X_DATA /    PLOTSP_Y_DATA (in s). 

bc_e_b

I

C * 20

'neumann'

Bottom boundary condition of the TKE.

bc_lr

I

C * 20

´cyclic´

Boundary condition along x (for all quantities).

bc_ns

I

C * 20

'cyclic'

Boundary condition along y (for all quantities).

bc_p_b

I

C * 20

'neumann'

Bottom boundary condition of the perturbation pressure.

bc_p_t

I

C * 20

'dirichlet'

Top boundary condition of the perturbation pressure.

bc_par_b

P

C*15

´reflect´

Bottom boundary condition for particle transport.

bc_par_lr

P

C*15

´cyclic´

Lateral boundary condition (x-direction) for particle transport.

bc_par_ns

P

C*15

´cyclic´

Lateral boundary condition (y-direction) for particle transport.

bc_par_t

P

C*15

´absorb´

Top boundary condition for particle transport.

bc_pt_b

I

C * 20

'dirichlet'

Bottom boundary condition of the potential temperature.

bc_pt_t

I

C * 20

'initial_gradient'

Top boundary condition of the potential temperature.

bc_q_b

I

C * 20

'dirichlet'

Bottom boundary condition of the specific humidity / total water content.

bc_q_t

I

C * 20

'neumann'

Top boundary condition of the specific humidity / total water content.

bc_s_b

I

C * 20

'dirichlet'

Bottom boundary condition of the scalar concentration.

bc_s_t

I

C * 20

´neumann´

Top boundary condition of the scalar concentration.

bc_sa_t

I

C * 20

'neumann'

Top boundary condition of the salinity. 

bc_uv_b

I

C * 20

'dirichlet'

Bottom boundary condition of the horizontal wind components u and v.

bc_uv_t

I

C * 20

'dirichlet'

Top boundary condition of the horizontal velocity components u and v.

bottom_salinityflux

I

R

0.0

Kinematic salinity flux near the surface (in psu m/s).

building_height

I

R

50.0

Height of a single building in m.

building_length_x

I

R

50.0

Width of a single building in m.

building_length_y

I

R

50.0

Depth of a single building in m.

building_wall_left

I

R

building centered in x-direction

x-coordinate of the left building wall in m.

building_wall_south

I

R

building centered in y-direction

y-coordinate of the South building wall in m.

call_psolver_at_all_substeps

R

L

.T..

Switch to steer the call of the pressure solver.

canopy_mode

I

C * 20

'block'

Canopy mode

canyon_height

I

R

50.0

Street canyon height in m.

canyon_width_x

I

R

9999999.9

Street canyon width in x-direction in m.

canyon_width_y

I

R

9999999.9

Street canyon width in y-direction in m.

canyon_wall_left

I

R

canyon centered in x-direction

x-coordinate of the left canyon wall in m.

canyon_wall_south

I

R

canyon centered in y-direction

y-coordinate of the South canyon wall in m.

cfl_factor

R

R

0.1, 0.8 or 0.9 (see parameter description)

Time step limiting factor.

clip_dvrp_l

P

R

0.0

Left boundary of the displayed domain (in m).

clip_dvrp_n

P

R

(ny+1)*dy

North boundary of the displayed domain (in m).

clip_dvrp_r

P

R

(nx+1)*dx

Right boundary of the displayed domain (in m).

clip_dvrp_s

P

R

0.0

South boundary of the displayed domain (in m).

cloud_droplets

I

L

.F.

Parameter to switch on usage of cloud droplets.

cloud_physics

I

L

.F.

Parameter to switch on the condensation scheme.

cluster_size

P

I

1

Vertex cluster size for polygon reduction of topography.

color_interval

P

R(2)

0.0, 1.0

Interval of values used for determining the particle color displayed in the animation.

comp_spectra_level

P

I (100)

no level

Vertical level for which horizontal spectra are to be calculated and output (gridpoints).

conserve_volume_flow

I

L

.F.

Conservation of volume flow in x- and y-direction.

conserve_volume_flow_mode

I

C * 16

'default'

Modus of volume flow conservation.

coupling_start_time

I

R

0.0

Simulation time of a precursor run.

create_disturbances

R

L

.T.

Switch to impose random perturbations to the horizontal velocity field.

cross_normalized_x

R

C * 10 (100)

100 * ' '

Type of normalization applied to the x-coordinate of vertical profiles to be plotted with profil.

cross_normalized_y

R

C * 10 
(100)

100 * ' '

Type of normalization applied to the y-coordinate of vertical profiles to be plotted with profil.

cross_profiles

R

C * 100 (100)

see parameter description

Determines which vertical profiles are to be presented in which coordinate system if the plot software profil is used. 

cross_xtext

R

C * 40 
 (100)

see parameter description

x-axis labels of vertical profile coordinate systems to be plotted with profil.

cthf

R

R

0.0

Average heat flux that is prescribed at the top of the plant canopy (in K m/s).

cut_spline_overshoot

I

L

.T.

Cut off of so-called overshoots, which can occur with the upstream-spline-scheme.

cycle_mg

R

C * 1

'w'

Type of cycle to be used with the multi-grid method. 

damp_level_1d

I

R

zu(nz+1)

Height where the damping layer begins in the 1d-model (in m).

data_output

R

C * 10 (100)

100 * ´ ´

Quantities for which 2d cross section and/or 3d volume data are to be output.

data_output_format

R

C * 10 (10)

'netcdf'

Format of output data.

data_output_pr

R

C * 10 (100)

100 * ' '

Quantities for which vertical profiles (horizontally averaged) are to be output.

data_output_pr_user

U

C * 10
(200)

200 * ' '

User defined quantities for which horizontally averaged profile data is to be output.

data_output_sp

P

C * 10 (10)

10 * ' '

Quantities for which horizontal spectra are to be calculated and output.

data_output_user

U

C * 10 (100)

100 * ' '

User defined quantities for which 2d cross section and/or 3d volume data are to be output.

data_output_2d_on_each_pe

R

L

.T.

Output 2d cross section data by one or all processors. 

density_ratio

P

R (10)

0.0, 9 * 9999999.9

Ratio of the density of the fluid and the density of the particles.

dissipation_1d

I

C * 20

'as_in_3d_model'

Calculation method for the energy dissipation term in the TKE equation of the 1d-model.

disturbance   
 _amplitude

R

R

0.25

Maximum perturbation amplitude of the random perturbations imposed to the horizontal velocity field (in m/s).

disturbance_energy   
 _limit

R

R

0.01

Upper limit value of the perturbation energy of the velocity field used as a criterion for imposing random perturbations (in m²/s²). 

disturbance_level_b

R

R

zu(3) or zu(nz*2/3)

Lower limit of the vertical range for which random perturbations are to be imposed on the horizontal wind field (in m). 

disturbance_level_t

R

R

zu(nz/3) or zu(nzt-3)

Upper limit of the vertical range for which random perturbations are to be imposed on the horizontal wind field (in m).

do2d_at_begin

R

L

.F.

Output 2d cross section data by one or all processors. 

do3d_at_begin

R

L

.F.

Output of 3d volume data at the beginning of a run.

do3d_compress

R

L

.F.

Output of data for 3d plots in compressed form. 

do3d_comp_prec

R

C * 7 (100)

see parameter description

Significant digits in case of compressed data output. 

dp_external

R

L

.F.

External pressure gradient switch.

dp_smooth

R

L

.F.

Vertically smooth the external pressure gradient using a sinusoidal smoothing function.

dp_level_b

R

R

0.0

Lower limit of the vertical range for which the external pressure gradient is applied (in m).

dpdxy

R

R (2)

2 * 0.0

Values of the external pressure gradient applied in x- and y-direction, respectively (in Pa/m).

drag_coefficient

I

R

0.0

Drag coefficient used in the plant canopy model.

dt

I/R

R

variable

Time step for the 3d-model (in s).

dt_averaging_input

R

R

0.0

Temporal interval of data which are subject to temporal averaging (in s).

dt_averaging_input_pr

R

R

value of dt_
averaging_
input

Temporal interval of data which are subject to temporal averaging of vertical profiles and/or spectra (in s). 

dt_coupling

R

R

9999999.9

Temporal interval for the data exchange in case of runs with coupled models (e.g. atmosphere - ocean) (in s).

dt_data_output

R

R

9999999.9

Temporal interval at which data (3d volume data (instantaneous or time averaged), cross sections (instantaneous or time averaged), vertical profiles, spectra) shall be output (in s). 

dt_data_output_av

R

R

value of  dt_data_
output

Temporal interval at which time averaged 3d volume data and/or 2d cross section data shall be output (in s). 

dt_disturb

R

R

9999999.9

Temporal interval at which random perturbations are to be imposed on the horizontal velocity field (in s).

dt_dopr

R

R

value of  dt_data_
output

Temporal interval at which data of vertical profiles shall be output (to local file DATA_1D_PR_NETCDF or/and PLOT1D_DATA) (in s). 

dt_dopr_listing

R

R

9999999.9

Temporal interval at which data of vertical profiles shall be output (output for printouts, local file LIST_PROFIL) (in s). 

dt_dopts

P

R

value of  dt_data_
output

Temporal interval at which time series data of particle quantities shall be output (in s). 

dt_dosp

P

R

value of  dt_data_
output

Temporal interval at which spectra data shall be output (in s). 

dt_dots

R

R

see parameter description

Temporal interval at which time series data shall be output (in s).

dt_do2d_xy

R

R

value of  dt_data_
output

Temporal interval at which horizontal cross section data shall be output (in s).

dt_do2d_xz

R

R

value of  dt_data_
output

Temporal interval at which vertical cross section data (xz) shall be output (in s).

dt_do2d_yz

R

R

value of  dt_data_
output

Temporal interval at which vertical cross section data (yz) shall be output (in s).

dt_do3d

R

R

value of  dt_data_
output

Temporal interval at which 3d volume data shall be output (in s).

dt_dvrp

P

R

9999999.9

Temporal interval of scenes to be displayed with the dvrp software (in s).

dt_max

R

R

20.0

Maximum allowed value of the timestep (in s).

dt_min_part

P

R

0.0002

Minimum value for the particle timestep when SGS velocities are used (in s).

dt_prel

P

R

9999999.9

Temporal interval at which particles are to be released from a particle source (in s). 

dt_pr_1d

I

R

9999999.9

Temporal interval of vertical profile output of the 1D-model (in s). 

dt_restart

R

R

9999999.9

Temporal interval at which a new restart run is to be carried out (in s).

dt_run_control

R

R

60.0

Temporal interval at which run control output is to be made (in s).

dt_run_control_1d

I

R

60.0

Temporal interval of runtime control output of the 1d-model (in s).

dt_sort_particles

P

R

0.0

Temporal interval for sorting particles (in s).

dt_write_particle_data

P

R

9999999.9

Temporal interval for output of particle data (in s).

dvrp_directory

P

C * 80

'default'

Name of the directory into which data created by the dvrp software shall be saved.

dvrp_file

P

C * 80

'default'

Name of the file into which data created by the dvrp software shall be output.

dvrp_host

P

C * 80

'origin.rvs.
uni- hanover.de'

Name of the computer to which data created by the dvrp software shall be transferred.

dvrp_output

P

C * 10

'rtsp'

Output mode for the dvrp software.

dvrp_password

P

C * 80

'********'

Password for the computer to which data created by the dvrp software is to be transferred.

dvrp_psize

P

R

0.2 * dx

Diameter that the particles is given in visualizations with the dvrp software (in m).

dvrpsize_interval

P

R(2)

0.0, 1.0

Interval of values used for determining the particle size displayed in the animation.

dvrp_username

P

C * 80

no default value

User name of a valid account on the computer to which data created by the dvrp software is to be transferred.

dx

I

R

1.0

Horizontal grid spacing along the x-direction (in m).

dy

I

R

1.0

Horizontal grid spacing along the y-direction (in m).

dz

I

R

no default, see parameter description

Vertical grid spacing (in m).

dz_max

I

R

9999999.9

Allowed maximum vertical grid spacing (in m).

dz_stretch_factor

I

R

1.08

Stretch factor for a vertically stretched grid (see dz_stretch_level).

dz_stretch_level

I

R

100000.0

Height level above/below which the grid is to be stretched vertically (in m).

e_init

I

R

0.0

Initial TKE in m²s^-2.

e_min

I

R

0.0

Minimum TKE in m²s^-2.

end_time

R

R

0.0

Simulation time of the 3D model (in s).

end_time_prel

P

R

9999999.9

Time of the last release of particles (in s).

end_time_1d

I

R

864000.0

Time to be simulated for the 1D-model (in s). 

fft_method

I

C * 20

'system specific'

FFT-method to be used.

force_print_header

R

L

.F.

Steering of header output to the local file RUN_CONTROL.

galilei_transformation

I

L

.F.

Application of a Galilei-transformation to the coordinate system of the model.

grid_matching

I

C * 6

'strict'

Variable to adjust the subdomain sizes in parallel runs.

groundplate_color

P

R(3)

0.0, 0.6, 0.0

Color of the ground plate

humidity

I

L

.F.

Parameter to switch on the prognostic equation for specific humidity q.

inflow_damping_height

I

R

from precursor run

Height below which the turbulence signal is used for turbulence recycling (in m).

inflow_damping_width

I

R

0.1 * inflow_damping_height

Transition range within which the turbulance signal is damped to zero (in m).

inflow_disturbance_begin

I

I

MIN(10,
nx/2 or ny/2)

Lower limit of the horizontal range for which random perturbations are to be imposed on the horizontal velocity field (gridpoints).

inflow_disturbance_end

I

I

MIN(100,
3/4*nx or
3/4*ny)

Upper limit of the horizontal range for which random perturbations are to be imposed on the horizontal velocity field (gridpoints).

initializing_actions

I

C * 100

no default, see parameter description

Initialization actions to be carried out.

initial_weighting_factor

P

R

1.0

Factor to define the real number of initial droplets in a grid cell.

isosurface_color

P

R(3,10)

0.9, 0.9, 0.9
0.8, 0.1, 0.1
......

Color of the isosurface(s).

km_constant

I

R

variable (computed from TKE)

Constant eddy diffusivities are used (laminar simulations). 

km_damp_max

I

R

0.5*(dx or dy)

Maximum diffusivity used for filtering the velocity field in the vicinity of the outflow (in m²/s).

lad_surface

I

R

0.0

Surface value of the leaf area density (in m²/m³)

lad_vertical_gradient

I

R (10)

10 * 0.0

Gradient(s) of the leaf area density (in m²/m⁴)

lad_vertical_gradient_level

I

R (10)

10 * 0.0

Height level from which on the gradient of the leaf area density defined by lad_vertical_gradient_level is effective (in m).

leaf_surface_concentration

R

R

0.0

Concentration of a passive scalar at the surface of a leaf (in kg/m³).

long_filter_factor

I

R

0.0

Filter factor for the so-called Long-filter.

loop_optimization

I

C * 16

see parameter description

Method used to optimize loops for solving the prognostic equations .

maximum_number_
of_particles

P

I

1000

Maximum number of particles (on a PE).

maximum_number_
of_tailpoints

P

I

100

Maximum number of tailpoints that a particle tail can have.

maximum_tailpoint_
age

P

R

100000.0

Maximum age that the end point of a particle tail is allowed to have (in s).

mg_cycles

R

I

- 1

Number of cycles to be used with the multi-grid scheme.

mg_switch_to_pe0_level

R

I

see parameter description

Grid level at which data shall be gathered on PE0.

minimum_tailpoint_
distance

P

R

0.0

Minimum distance allowed between two adjacent points of a particle tail (in m).

mixing_length_1d

I

C * 20

'as_in_3d_model'

Mixing length used in the 1d-model.

mode_dvrp

P

C * 20 (10)

10 * ' '

Graphical objects (isosurfaces, slicers, particles) which are to be created by the dvrp software.

momentum_advec

I

C * 10

'pw-scheme'

Advection scheme to be used for the momentum equations.

netcdf_precision

I

C * 20 (10)

single precision for all
output quantities

Defines the accuracy of the NetCDF output.

netcdf_64bit

R

L

.F.

All NetCDF files - except those containing 3d volume data - will have 64 bit offset format.

netcdf_64bit_3d

R

L

.T.

NetCDF files containing 3d volume data will have 64 bit offset format.

ngsrb

R

I

2

Grid level at which data shall be gathered on PE0.

normalizing_region

R

I

0

Determines the subdomain from which the normalization quantities are calculated.

npex

R

I

no default, see parameter description

Number of processors along x-direction of the virtual processor net.

npey

R

I

no default, see parameter description

Number of processors along y-direction of the virtual processor net.

nsor

R

I

20

Number of iterations to be used with the SOR-scheme.

nsor_ini

I

I

100

Initial number of iterations with the SOR algorithm

number_of_particle_groups

P

I

1

Number of particle groups to be used.

nx

I

I

no default, see parameter description

Number of grid points in x-direction.

ny

I

I

no default, see parameter description

Number of grid points in y-direction.

nz

I

I

no default, see parameter description

Number of grid points in z-direction.

nz_do3d

R

I

nz+1

Limits the output of 3d volume data along the vertical direction (grid point index k).

ocean

I

L

.F.

Parameter to switch on ocean runs.

omega

I

R

7.29212E-5

Angular velocity of the rotating system (in rad s^-1). 

omega_sor

R

R

1.8

Convergence factor to be used with the the SOR-scheme.

outflow_damping_width

I

I

MIN(20, nx/2 or ny/2)

Width of the damping range in the vicinity of the outflow (gridpoints).

overshoot_limit_e

I

R

0.0

Allowed limit for the overshooting of subgrid-scale TKE in case that the upstream-spline scheme is switched on (in m²/s²).

overshoot_limit_pt

I

R

0.0

Allowed limit for the overshooting of potential temperature in case that the upstream-spline scheme is switched on (in K).

overshoot_limit_u

I

R

0.0

Allowed limit for the overshooting of the u-component of velocity in case that the upstream-spline scheme is switched on (in m/s).

overshoot_limit_v

I

R

0.0

Allowed limit for the overshooting of the v-component of velocity in case that the upstream-spline scheme is switched on (in m/s).

overshoot_limit_w

I

R

0.0

Allowed limit for the overshooting of the w-component of velocity in case that the upstream-spline scheme is switched on (in m/s).

particles_per_point

P

I

1

Number of particles to be started per point.

particle_advection_start

P

R

0.0

Time of the first release of particles (in s).

particle_color

P

C*10

'none'

Parameter, which allows to bind the displayed particle color to certain flow quantities.

particle_dvrpsize

P

C*10

'none'

Parameter, which allows to bind the displayed particle size to certain flow quantities.

particle_maximum_age

P

R

9999999.9

Maximum allowed age of particles (in s).

passive_scalar

I

L

.F.

Parameter to switch on the prognostic equation for a passive scalar.

pch_index

I

I

0

Grid point index (scalar) of the upper boundary of the plant canopy layer

pdx

P

R (10)

10 * dx

Distance along x between particles within a particle source (in m).

pdy

P

R (10)

10 * dy

Distance along y between particles within a particle source (in m).

pdz

P

R (10)

10 * ( zu(2) - zu(1) )

Distance along z between particles within a particle source (in m).

phi

I

R

55.0

Geographical latitude (in degrees).

plant_canopy

I

L

.F.

Parameter to switch on the plant canopy model

plot_spectra_level

P

I (100)

No level

Vertical level(s) for which horizontal spectra are to be plotted (in gridpoints).

prandtl_layer

I

L

.T.

Parameter to switch on a Prandtl layer.

prandtl_number

R

R

1.0

Ratio of the eddy diffusivities for momentum and heat (K_m/K_h).

precipitation

I

L

.F.

Parameter to switch on the precipitation scheme.

precipitation_amount_
interval

R

R

value of  dt_do2d_
xy

Temporal interval for which the precipitation amount (in mm) shall be calculated and output (in s). 

profile_columns

R

I

3

Number of coordinate systems to be plotted in one row by profil.

profile_rows

R

I

2

Number of rows of coordinate systems to be plotted on one page by profil.

psb

P

R (10)

10 * zu(nz/2)

Bottom edge of a particle source (in m).

psl

P

R (10)

10 * 0.0

Left edge of a particle source (in m).

psn

P

R (10)

10 * ( ny * dy )

Rear (“north”) edge of a particle source (in m).

psolver

R

C * 10

'poisfft'

Scheme to be used to solve the Poisson equation for the perturbation pressure.

psr

P

R (10)

10 * ( nx * dx )

Right edge of a particle source (in m).

pss

P

R (10)

10 * 0.0

Front (“south”) edge of a particle source (in m).

pst

P

R (10)

10 * zu(nz/2)

Top edge of a particle source (in m).

pt_reference

I

R

use horizontal average as reference

Reference temperature to be used in all buoyancy terms (in K).

pt_surface

I

R

300.0

Surface potential temperature (in K).

pt_surface_initial   
 _change

I

R

0.0

Change in surface temperature to be made at the beginning of the 3d run (in K). 

pt_vertical_gradient

I

R (10)

10 * 0.0

Temperature gradient(s) of the initial temperature profile (in K / 100 m).

pt_vertical_gradient   
 _level

I

R (10)

10 *  0.0

Height level from which on the temperature gradient defined by pt_vertical_gradient is effective (in m). 

q_surface

I

R

0.0

Surface specific humidity / total water content (kg/kg).

q_surface_initial
 _change

I

R

0.0

Change in surface specific humidity / total water content to be made at the beginning of the 3d run (kg/kg).

q_vertical_gradient

I

R (10)

10 * 0.0

Humidity gradient(s) of the initial humidity profile (in 1/100 m).

q_vertical_gradient
 _level

I

R (10)

10 *  0.0

Height level from which on the humidity gradient defined by q_vertical_gradient is effective (in m). 

radiation

I

L

.F.

Parameter to switch on longwave radiation cooling at cloud-tops.

radius

P

R (10)

0.0, 9*
9999999.9

Particle radius (in m).

random_generator

I

C * 20

'numerical recipes'

Random number generator to be used for creating uniformly distributed random numbers.

random_heatflux

I

L

.F.

Parameter to impose random perturbations on the internal two-dimensional near surface heat flux field shf.

random_start_position

P

L

.F.

Initial position of the particles is varied randomly within certain limits. 

rayleigh_damping  
 _factor

R

R

0.0 and/or 0.01 (see parameter description)

Factor for Rayleigh damping. 

rayleigh_damping  
 _height

R

R

2/3 * zu(nz)

Height where the Rayleigh damping starts (in m). 

read_particles_from_
restartfile

P

L

.T.

Read particle data from the previous run.

recycling_width

I

R

0.1 * nx * dx

Distance of the recycling plane from the inflow boundary (in m).

region

U

C * 40 (0:9)

Name(s) of the subdomain(s) defined by the user.

residual_limit

R

R

1.0E-6

Largest residual permitted for the multi-grid scheme (in s^-2m^-3).

restart_time

R

R

9999999.9

Simulated time after which a restart run is to be carried out (in s).

rif_max

I

R

1.0

Upper limit of the flux-Richardson number.

rif_min

I

R

- 5.0

Lower limit of the flux-Richardson number.

roughness_length

I

R

0.1

Roughness length (in m).

sa_surface

I

R

35.0

Surface salinity (in psu).

sa_vertical_gradient

I

R(10)

10 * 0.0

Salinity gradient(s) of the initial salinity profile (in psu / 100 m).

sa_vertical_gradient_level

I

R(10)

10 * 0.0

Height level from which on the salinity gradient defined by sa_vertical_gradient is effective (in m).

scalar_advec

I

C * 10

'pw-scheme'

Advection scheme to be used for the scalar quantities.

scalar_exchange_coefficient

R

R

0.0

Scalar exchange coefficient for a leaf (dimensionless).

section_xy

R

I (100)

no section

Position of cross section(s) for output of 2d horizontal cross sections (grid point index k). 

section_xz

R

I (100)

no section

Position of cross section(s) for output of 2d (xz) vertical cross sections (grid point index j). 

section_yz

R

I (100)

no section

Position of cross section(s) for output of 2d (yz) vertical cross sections (grid point index i). 

skip_particles_for_tail

P

I

100

Limit the number of particle tails.

skip_time_data_output

R

R

0.0

No data output before this interval has passed (in s).

skip_time_data_output_av

R

R

value of skip_time_
data_output

No output of temporally averaged 2d/3d data before this interval has passed (in s).

skip_time_dopr

R

R

value of skip_time_
data_output

No output of vertical profile data before this interval has passed (in s).

skip_time_dosp

P

R

value of skip_time_
data_output

No output of spectra data before this interval has passed (in s).

skip_time_do2d_xy

R

R

value of skip_time_
data_output

No output of instantaneous horizontal cross section data before this interval has passed (in s).

skip_time_do2d_xz

R

R

value of skip_time_
data_output

No output of instantaneous vertical (xz) cross section data before this interval has passed (in s).

skip_time_do2d_yz

R

R

value of skip_time_
data_output

No output of instantaneous vertical (yz) cross section data before this interval has passed (in s).

skip_time_do3d

R

R

value of skip_time_
data_output

No output of instantaneous 3d volume data before this interval has passed (in s).

slicer_range_limits_dvrp

P

R(2,10)

10 * (-1,1)

Ranges of values to which a color table has to be mapped (units of the respective quantity).

spectra_direction

P

C * 2 (10)

10 * ' '

Direction(s) along which spectra are to be calculated.

statistic_regions

I

I

0

Number of additional user-defined subdomains for which statistical analysis and corresponding output (profiles, time series) shall be made.

superelevation

P

R

1.0

Superelevation factor for the vertical coordinate.

superelevation_x

P

R

1.0

Superelevation factor for the horizontal (x) coordinate.

superelevation_y

P

R

1.0

Superelevation factor for the horizontal (y) coordinate.

surface_heatflux

I

R

no prescribed heatflux

Kinematic sensible heat flux at the bottom surface (in K m/s).

surface_pressure

I

R

1013.25

Atmospheric pressure at the surface (in hPa)

surface_scalarflux

I

R

0.0

Scalar flux at the surface (in kg/(m² s)).

surface_waterflux

I

R

0.0

Kinematic water flux near the surface (in m/s).

s_surface

I

R

0.0

Surface value of the passive scalar (in kg/m³).

s_surface_initial_change

I

R

0.0

Change in surface scalar concentration to be made at the beginning of the 3d run (in kg/m³).

s_vertical_gradient

I

R(10)

10 * 0.0

Scalar concentration gradient(s) of the initial scalar concentration profile (in kg/m³ / 100 m).

s_vertical_gradient_level

I

R(10)

10 * 0.0

Height level from which on the scalar gradient defined by s_vertical_gradient is effective (in m).

termination_time  
 _needed

R

R

35.0

CPU time needed for terminal actions at the end of a run in batch mode (in s).

threshold

P

R (10)

0.0

Threshold value for which an isosurface is to be created by the dvrp software.

timestep_scheme

I

C * 20

'runge-kutta-3'

Time step scheme to be used for integration of the prognostic variables.

topography

I

C * 40

'flat'

Topography mode.

topography_color

P

R(3)

0.8, 0.7, 0.6

Color of the topography.

topography_grid_convention

I

C * 11

default depends on value of topography; see text for details

Convention for defining the topography grid.

top_heatflux

I

R

no prescribed heatflux

Kinematic sensible heat flux at the top surface (in K m/s).

top_momentumflux_u

I

R

no prescribed momentumflux

Momentum flux along x at the top boundary (in m2/s2).

top_momentumflux_v

I

R

no prescribed momentumflux

Momentum flux along y at the top boundary (in m2/s2).

top_salinityflux

I

R

no prescribed
salinityflux

Kinematic salinity flux at the top boundary, i.e. the sea surface (in psu m/s).

turbulent_inflow

I

L

.F.

Generates a turbulent inflow at side boundaries using a turbulence recycling method.

u_bulk

I

R

0.0

u-component of the predefined bulk velocity (in m/s).

ug_surface

I

R

0.0

u-component of the geostrophic wind at the surface (in m/s).

ug_vertical_gradient

I

R(10)

10 * 0.0

Gradient(s) of the initial profile of the  u-component of the geostrophic wind (in 1/100s).

ug_vertical_gradient_level

I

R(10)

10 * 0.0

Height level from which on the gradient defined by ug_vertical_gradient is effective (in m).

ups_limit_e

I

R

0.0

Subgrid-scale turbulent kinetic energy difference used as criterion for applying the upstream scheme when upstream-spline advection is switched on (in m²/s²).  

ups_limit_pt

I

R

0.0

Temperature difference used as criterion for applying  the upstream scheme when upstream-spline advection  is switched on (in K).

ups_limit_u

I

R

0.0

Velocity difference (u-component) used as criterion for applying the upstream scheme when upstream-spline advection is switched on (in m/s).

ups_limit_v

I

R

0.0

Velocity difference (v-component) used as criterion for applying the upstream scheme when upstream-spline advection is switched on (in m/s).

ups_limit_w

I

R

0.0

Velocity difference (w-component) used as criterion for applying the upstream scheme when upstream-spline advection is switched on (in m/s).

use_particle_tails

P

L

.F.

Give particles a tail.

use_prior_plot1d  
 _parameters

R

L

.F.

Additional plot of vertical profile data with profil from preceding runs of the job chain. 

use_sgs_for_particles

P

L

.F.

Use subgrid-scale velocities for particle advection.

use_surface_fluxes

I

L

.F.

Parameter to steer the treatment of the subgrid-scale vertical fluxes within the diffusion terms at k=1 (bottom boundary).

use_top_fluxes

I

L

.F.

Parameter to steer the treatment of the subgrid-scale vertical fluxes within the diffusion terms at k=nz (top boundary).

use_ug_for_galilei_tr

I

L

.T.

Switch to determine the translation velocity in case that a Galilean transformation is used.

use_upstream_for_tke

I

L

.F.

Parameter to choose the advection/timestep scheme to be used for the subgrid-scale TKE.

vertical_particle_advection

P

L

.T.

Switch on/off vertical particle transport.

v_bulk

I

R

0.0

v-component of the predefined bulk velocity (in m/s).

vg_surface

I

R

0.0

v-component of the geostrophic wind at the surface (in m/s).

vg_vertical_gradient

I

R(10)

10 * 0.0

Gradient(s) of the initial profile of the  v-component of the geostrophic wind (in 1/100s).

vg_vertical_gradient_level

I

R(10)

10 * 0.0

Height level from which on the gradient defined by vg_vertical_gradient is effective (in m).

wall_adjustment

I

L

.T.

Parameter to restrict the mixing length in the vicinity of the bottom boundary (and near vertical walls of a non-flat topography).

wall_heatflux

I

R(5)

5 * 0.0

Prescribed kinematic sensible heat flux in K m/s at the five topography faces.

write_particle_
statistics

P

L

.F.

Switch on/off output of particle informations.

z_max_do1d

R

R

zu(nzt+1) (model top)

Height level up to which horizontally averaged profiles are to be plotted with profil (in m).

z_max_do1d  
 _normalized

R

R

determined by plot
data

Normalized height level up to which horizontally averaged profiles are to be plotted with profil.

z_max_do2d

R

R

zu(nz)

Height level up to which 2d cross sections are to be plotted with iso2d (in m).