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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.

MUSE : Multilayer Dispersion Model

General information

Model name and version

short nameMUSE
full nameMultilayer Dispersion Model
revisionVersion 2.0
dateMarch 2005
last change

Responsible for this information

nameNicolas Moussiopoulos
instituteAristotle University Thessaloniki, Laboratory of H
addressP.O.Box 483, Aristotle University Thessaloniki
zipGR-54124
cityThessaloniki
countryGreece
phone+30 2310 996011
fax+30 2310 996012
e-mailmoussio(belongs-to)vergina.eng.auth.gr

Additional information on the model

Contact person for model code

same as person above
nameNicolas Moussiopoulos
instituteAristotle University Thessaloniki, Laboratory of H
divisionsP.O.Box 483, Aristotle University Thessaloniki
streetBox 483
zipGR-54124
cityThessaloniki
countryGreece
phone+30 2310 996011
emailmoussio(belongs-to)vergina.eng.auth.gr
fax+30 2310 996012

Model developer and model user

developer and userLaboratory of Heat Transfer and Environmental Engineering, Aristotle University of Thessaloniki (LHTEE, AUT)

Level of Knowledge needed to operate model

basic
intermediate
advanced
remarksGood knowledge of UNIX or LINUX as oparating systems and FORTRAN as programming language.

Model use at your institution

operational
for research
other use

Model code available?

is available?no
more detailsThe model is not a public domain programme. Information on the conditions for obtaining MUSE can be provided by the contact person.

Minimum computer resources required

typeSufficient experience on a Pentium II PC and on POWERPC; extensive use on various workstation platforms (mainly IBM/RISC, but also Hewlett Packard and DEC Alpha); enough experience on IBM SP2, Siemens VP400EX and several CRAYs.
time needed for runOn a Pentium II PC typically 5-10 times faster than reality (50x50 horizontal grid points, EMEP chemistry)
storageStrongly dependent on chemical mechanism and number of grid points, typically 50-200 MByte RAM, Disk space 10-100 Mbyte according to output required.

Further information

documentationManuals available in three languages
model referencesSahm P. and Moussiopoulos N. (1995), MUSE - a multilayer dispersion model for reactive pollutants, in Air Pollution III (H. Power, N. Moussiopoulos and C.A. Brebbia, eds), Computational Mechanics Publications, Southampton, Vol. 1, 359-368. Sahm P. and Moussiopoulos N., (1996) MUSE - A new three layer photochmical dispersion model, Proceedings of EUROTRAC Symposium ’96, Computer Mechanics Publications, Southampton, 553-557. Sahm P., Kirchner F. and Moussiopoulos N. (1997), Development and Validation of the Multilayer Model MUSE - The Impact of the Chemical Reaction Mechanism on Air Quality Predictions, Proceedings of the 22nd NATO/CCMS International Technical Meeting on Air Pollution Modelling and its Application, Clermont-Ferrand, France, June 2-6, 1997.
webpagehttp://aix.meng.auth.gr/lhtee/projects/
additional informationSeveral Institutions and Laboratories have formed a \'user community\' (not formal) that works on development and testing of the model. The model is being used by various governmental and local authorities in several European countries. Users of MUSE should be engineers with a sufficient background in atmospheric sciences and some experience in the use of numerical simulation models.

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
remarks

Approximations

Boussinesq
anelastic
hydrostatic
flat earth
remarks

Parametrizations

Chemistry & transport

photolysis rateDepending on zenith angle
dry depositionDry deposition is calculated following the resistance model concept.
wet deposition
remarks

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)Chemical scheme for the EMEP MSC-W oxidant model.
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 detailsVarious chemical reactions schemes: + KOREM 20 species, 39 reactions + EMEP 66 species, 139 reactions + RADM2 56 species, 156 reactions + RACM 72 species, 234 reactions

Initialization & boundary treatment

Initialization

chemistry & transport
meteorologyEither data assimilation or 24h prerun

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

orographyOrography height for each grid location.
land useLanduse (for each grid location), the latter serving as a basis for calculating biogenic emissions.
obstacles
vegetation
meteorologyMeteorological data such as wind speed in x- and y-direction as well as temperature, TKE, surface roughness, Monin-Obukhov length and friction velocity are required.
concentrationsRegional background concentrations of NO, NO2, O3 and all other species included in the chemical reaction mechanism either from measurements of from large scale model application.
emissionsThe emissions are provided in kg/h/cell area for each grid location. It is appropriate that such data are organised in an emission inventory.
remarks

Data assimilation

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

Boundary conditions

Chemistry & transport
surface
top
lateral inflowRegional background concentrations of NO, NO2, O3 and all other species included in the chemical reaction mechanism either from measurements of from large scale model application.
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 exchangeVariable time step
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
other

Spatial discretisation

scalar quantitiesEquations solved: atmospheric - diffusion - reaction equations.
additional information
other
chemistry solver

Model resolution

Chemistry & transport

HorizontalVertical
max10500
min0.520

Domain size

Chemistry & transport

HorizontalVertical
max50010000
min1020

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 examplesApplications include the Auto Oil study and the Heilbronn ozone experiment, the Air Quality assessment for the new airport in Athens, extended studies for the Greater Athens (Athens 2004) and Thessaloniki areas and several other urban air quality studies (Stuttgart area, Milano conurbation, Barcelona).

Participation in specific model evaluation exercises

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