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More information on some input arrays can be found when moving the cursor above the corresponding field in the questionnaire. Those fields are also explained in the glossary.

ALADIN-CAMx: Comprehensive Air Quality model based on ALADIN forecast data

General information

Model name and version

short nameALADIN-CAMx
full nameComprehensive Air Quality model based on ALADIN forecast data
revision
datev4.20 (CAMx)
last change

Responsible for this information

nameKathrin Baumann-Stanzer
instituteZAMG
addressHohe Warte 38
zip1190
cityWien
countryAustria
phone0043 1 36026 2405
fax0043 1 36026 74
e-mailk.baumann(belongs-to)zamg.ac.at

Additional information on the model

Contact person for model code

same as person above
nameKathrin Baumann-Stanzer
instituteZAMG
divisionsHohe Warte 38
street
zip1190
cityWien
countryAustria
phone0043 1 36026 2405
emailk.baumann(belongs-to)zamg.ac.at
fax0043 1 36026 74

Model developer and model user

developer and userCAMx is available from http://www.camx.com For information about the ALADIN Weather Predicition Project see http://www.cnrm.meteo.fr/aladin/ The two models were combined to a pre-operational ozone forecast system in cooperation by the University of Natural Resources and Applied Life Sciences, Vienna and the Central Institute for Meteorology and Geodynamics (ZAMG)

Level of Knowledge needed to operate model

basic
intermediate
advanced
remarks

Model use at your institution

operational
for research
other usepre-operational (testing) in summer 2006

Model code available?

is available?yes
more detailsfor CAMx and ALADIN see the internet adresses above; the interchange programs may be available upon request

Minimum computer resources required

typeLINUX PC for CAMx
time needed for run48 hours simulation: 8 hours cpu-time
storage1,3 Gb per 48 hours simulation

Further information

documentationALADIN http://www.cnrm.meteo.fr/aladin/ CAMx http://www.camx.com internal report on coupling programs (German only)
model referencesB. C. Krüger, K. Baumann-Stanzer, M. Langer, and M. Hirtl, 2006: Ozone-Forecasts for Austria with ALADIN/CAMx - Part II: Improvements of the Model System. Geophysical Research Abstracts, Vol. 8, 1607-7962/gra/EGU06-A-05982 Baumann-Stanzer K., M. Hirtl, B.C. Krueger, 2005: Regional-scale air quality forecasts for Austria Abstracts of the 5th EMS Annual Meeting/ECAM, Volume 2, 12 - 16 September 2005, Utrecht, Netherlands, ISSN 1812-7053 (CD-ROM). M. Hirtl, K. Baumann-Stanzer, M. Langer and B.C. Krüger, 2005: A new ozone prediction system using operational ALADIN data. Proceedings of the 10th Int. Conf. on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, 345-349.
webpagehttp://www.cnrm.meteo.fr/aladin/; http://www.camx.com
additional information

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
remarksCAMx also includes aerosol chemistry - at the moment not applied in the ALADIN-CAMx forecast system

Approximations

Boussinesq
anelastic
hydrostatic
flat earth
remarks

Parametrizations

Chemistry & transport

photolysis rateTUV scheme used (Madronich and Flocke, 1998) http://www.acd.ucar.edu/TUV based on ECMWF total ozone column forecast Madronich, S. and S. Flocke, 1998: The role of solar radiation in atmospheric chemistry. in Handbook of Environmental Chemistry (P. Boule, ed.), Springer-Verlag, Heidelberg, 1998, pp. 1-26.
dry depositionSeparate resistance models for gases and aerosols, Deposition velocity as surface boundary condition for vertical diffusion
wet depositionSeparate scavenging models for gases and aerosols, uptake as a function of rainfall rate, cloud water content, gas solubility and diffusivity, PM size
remarksvertical diffusion coefficient after Louis (1979) Louis J.-F., 1979: A parametric model of vertical eddy fluxes in the atmosphere. Boundary Layer Meteorology 17, pp. 187-202

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)CBM-IV (Gery et al., 1989)and SAPRC99 (Carter, 2000) available, SAPRC99 used for ozone forecast Gery M.W., G.Z. Whitten, J.P. Killus, and M.C. Dodge, 1989: A Photochemical Kinetics Mechanism for Urban and Regional Scale Computer Modelling. J. Geophys. Res. 94, 12925-12956. Carter W. P. L., 2000: Implementation of the SAPRC-99 Chemical Mechanism into the Model-3 Framework. Report to the United States Environmental Protection Agency.
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 detailsaerosol chemistry available with CBM-IV gas phase chemistry; RADM-AQ, ISORROPIA, SOAP not used in ALADIN-CAMx at moment see www.camx.com for further details

Initialization & boundary treatment

Initialization

chemistry & transportozone forecast runs twice a day are once initialized with average fields at beginning of forecast period (May) and continuously initialized with the output of the previous model run during the forecast period (until September)
meteorology

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

orographyas in ALADIN
land useas in ALADIN
obstacles
vegetation
meteorologyoutput of the operational ALADIN model runs at ZAMG, AUstria
concentrationstotal ozone column forecast from ECMWF
emissionsEMEP data local emission inventories for Austria
remarks

Data assimilation

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

Boundary conditions

Chemistry & transport
surfacedry deposition rates used as the surface boundary condition
top
lateral inflowconstant lateral boundaries from previous model run
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
remarks

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
other1 hour

Spatial discretisation

scalar quantities
additional information
other
chemistry solver

Model resolution

Chemistry & transport

HorizontalVertical
max2500
min9.630

Domain size

Chemistry & transport

HorizontalVertical
max
minEuropeTroposphere

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 examplesBaumann-Stanzer K., B.C. Krueger, M. Hirtl, M. Langer, 2006: Ozone-forecasts for Austria with ALADIN/CAMx - Part I: Experiences of summer 2005. Geophysical Research Abstracts, Vol. 8, 1607-7962/gra/EGU06-A-05982 B. C. Krüger, K. Baumann-Stanzer, M. Langer, and M. Hirtl, 2006: Ozone-Forecasts for Austria with ALADIN/CAMx - Part II: Improvements of the Model System. Geophysical Research Abstracts, Vol. 8, 1607-7962/gra/EGU06-A-05982 Baumann-Stanzer K., M. Hirtl, B.C. Krueger, 2005: Regional-scale air quality forecasts for Austria Abstracts of the 5th EMS Annual Meeting/ECAM, Volume 2, 12 - 16 September 2005, Utrecht, Netherlands, ISSN 1812-7053 (CD-ROM). M. Hirtl, K. Baumann-Stanzer, M. Langer and B.C. Krüger, 2005: A new ozone prediction system using operational ALADIN data. Proceedings of the 10th Int. Conf. on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, 345-349.

Participation in specific model evaluation exercises

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