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AUSTAL2000: Dispersion calculation according to the German Regulation on Air Quality Control (TA Luft)

General information

Model name and version

short nameAUSTAL2000
full nameDispersion calculation according to the German Regulation on Air Quality Control (TA Luft)
revision2.4.7
date2009-02-03
last change

Responsible for this information

nameUlf Janicke
instituteIng.-Büro Janicke
addressHermann-Hoch-Weg 1
zip88662
cityÜberlingen
countryGermany
phone+49 7551 947 1818
fax
e-mailuj(belongs-to)janicke.de

Additional information on the model

Contact person for model code

same as person above
nameUmweltbundesamt (UBA)
institute
divisions
streetPostfach 1406
zip06813
cityDessau-Roßlau
countryGermany
phone
emailinfo@austal2000.de
fax

Model developer and model user

developer and userAUSTAL2000 was developed by Janicke Consulting on behalf of the German Environmental Agency (UBA; UFOPLAN Project 200 43 256). It is applied as a regulatory model by authorities, industry, and private consultants.

Level of Knowledge needed to operate model

basic
intermediate
advanced
remarksThe model implements all specifications of the TA Luft, therefore many parameters are fixed or can be automatically derived.

Model use at your institution

operational
for research
other use

Model code available?

is available?yes
more detailsThe full source code provided on teh AUSTAL2000 webpage (subject to the GNU public licence).

Minimum computer resources required

typeIBM compatible
time needed for run1h to 100h
storage10 MB to 3 GB

Further information

documentationThe integrated Lagrangian particle model is described in guideline VDI 3945/3 (German/English) which also contains a set of verification tests that a numerical implementation of the model must pass. The development of AUSTAL2000 is described in Janicke and Janicke (2002), see below. Program installation, parameters, examples, and special topics are described in the program manual (110 pages, German/English). Further documentation is provided on the AUSTAL2000 webpage.
model referencesVDI 3945 PART 3 (2000): Environmental meteorology; atmospheric dispersion models; particle model. Beuth, Berlin. See http://www.vdi.de. Janicke L, Janicke U, 2002: A modeling system for licensing industrial facilities. UFOPLAN 200 43 256, German Federal Environmental Agency UBA (German). Provided on the AUSTAL2000 webpage. Janicke U, Janicke L, 2007: Lagrangian particle modeling for regulatory purposes; A survey of recent developments in Germany. Proceedings of the 11th International Conference on Harmonization within Atmospheric Dispersion Modeling for Regulatory Purposes, Cambridge, England. See http://www.harmo.org.
webpagehttp://www.austal2000.de (German/English)
additional informationAlternatively to the integrated diagnostic wind field model, AUSTAL2000 can apply externally generated three-dimensional wind and turbulence fields. Executables (for Windows and Linux), description, examples, and source code are provided free of charge on the AUSTAL2000 webpage. A hotline support is available (info@austal2000.de). AUSTAL2000 includes native language support (NLS), so that it is easily adopted to other languages, like for example in the context of several inter-European twinning projects.

Model properties

Model type

2D
3D
meteorology
chemistry & transport

Model scale

microscale
mesoscale
macroscale
short term
long term

Meteorological variables

Input data
u
v
w
ζ
pv
T
θ
θl
p
Gph
ρ
qv
qt
qlc
qf
qsc
qlr
qsh
qsg
qss
N
E
ε
K
zi
other variables i
other variables ii
other variables iii

Chemical substances

PrognosticDiagnosticDry depositionWet depositionInput data
SO2
NO
NO2
NOX
NH3
HNO3
O3
CH4
DMS
H2O2
VOC
C6H6
HCHO
CO
CO2
POP
PM 10
PM 2.5
PPM10
PM 0.1
PM 1
NH4
SO4
dust
sea salt
BC
POM
SOA
NO3
Other gases
1st radioactivity
2nd radioactivity
3rd radioactivity
Cd
Pb
other heavymetals
pesticides
1st radioactivity
2nd radioactivity
3rd radioactivity
remarksAll gases (SO2, NO, NO2, NOX, BZL, TCE, F, NH3, Hg, odor) and PM fractions (4 diameter fractions; PM, As, Pb, Cd, Ni, Hg, Tl) subject to the regulation TA Luft.

Approximations

Boussinesq
anelastic
hydrostatic
flat earth
remarks

Parametrizations

Chemistry & transport

photolysis rate
dry depositionDry deposition velocities according to the regulation TA Luft.
wet depositionNot implemented.
remarks

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)Linear, stability-dependent conversion rates from NO to NO2 according to guideline VDI 3782/1.
wet phase chemistry (give details)
more information

Aerosol chemistry

passive aerosol
dry aerosol
wet aerosol
sectional approach
modal approach
other
nucleation
coagulation
condensation
aerosol mixing
aerosol ageing
primary aerosol formation
aerosol-gas phase interactions
optical properties
give details

Initialization & boundary treatment

Initialization

chemistry & transport
meteorology

Input data (name sources for data, e.g. website)

orographyUser-provided (text file).
land useAverage roughness length, automaticall calculated.
obstaclesUser-defined (blocks).
vegetation
meteorologySpecification of a time series with hourly means of wind speed, wind direction, and stability (Klug/Manier class or Monin-Obukov length) for one anemometer position. Alternatively specification of a dispersion class statistics. The internal boundary layer model creates from this data the one-dimensional boundary layer profiles according to guideline VDI 3783/8.
concentrationsConcentrations are calculated for the time periods required by the regulation TA Luft (hourly means, daily means, annual means, exceedances).
emissionsEmission sources of any number are specified as point, line, area, or volume sources. Source dynamics (plume rise) is accounted for according to guideline VDI 3782/3 (stacks) and VDI 3784/2 (cooling towers) or explicitly.
remarks

Data assimilation

Chemistry & transport
nudging technique
adjoint model
3D-VAR
4D-VAR
OI
details

Boundary conditions

Chemistry & transport
surface
top
lateral inflow
lateral outflow

Nesting

Chemistry & transport
one way
two way
other
variables nested
nesting online
nesting offline
data exchange by array
data exchange by file
time step for data exchange
explain method
variables nested
other

Solution technique

Coordinate system and projection

Horizontal

cartesian
Lambert conformal
latitude / longitude
rotated lat. / long.

Vertical

z coordinate
surface fitted grid
pressurecoordinate
sigma coordinate
remarksPossibility to apply nested grids.

Numeric

Chemistry & transport

Grid

Arakawa A
Arakawa B
Arakawa C
Arakawa D
Arakawa E
uniform grid
nonuniform grid
Euler
Lagrange
Gauss

Time integration

explicit
split-explicit
semi-implicit
time step same as meteorology
other

Spatial discretisation

scalar quantitiesWind fields are defined on the Arakawa-C grid. Scalar quantities are defined as point values. Concentrations are derived as volume averages with respect to each grid cell.
additional information
other
chemistry solver

Model resolution

Chemistry & transport

HorizontalVertical
max0.5100
min0.0021

Domain size

Chemistry & transport

HorizontalVertical
max2002000
min2800

Model Validation and Application

Validation & evaluation

Used validation & evaluation methods

analytic solutions
evaluated reference dataset
model intercomparison
additional validation & evaluation efforts
remarks

Application examples

application examplesPermit procedures according to the regulation TA Luft (e.g. for industrial plants or farming houses) which require a dispersion calculation; several hundreds every year. Odor assessments according to the German guideline GIRL.

Participation in specific model evaluation exercises

AQMEII
List experiments (AQMEII)
Cost728
List experiments (COST728)
HTAP
List experiments (HTAP)
MEGAPOLI
List experiments (MEGAPOLI)