Welcome guest. Please login.

List, classification & detail view

Note:
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.

Chensi:

General information

Model name and version

short nameChensi
full name
revision
date20th Sept 2005
last change

Responsible for this information

nameJean-Francois Sini
instituteEcole Centrale de Nantes
address1, rue de la Noë, BP 92101
zip44321
cityNantes
countryFrance
phone+33 240 371 680
fax+33 240 372 556
e-mailjean-francois.sini(belongs-to)ec-nantes.fr

Additional information on the model

Contact person for model code

same as person above
nameJean-Francois Sini
instituteEcole Centrale de Nantes
divisions
streetBP 92101
zip44321
cityNantes Cedex 3
countryFrance
phone+33 240 371 680
emailjean-francois.sini(at)ec-nantes.fr
fax+33 240 372 556

Model developer and model user

developer and userJean-Francois Sini

Level of Knowledge needed to operate model

basic
intermediate
advanced
remarksNo user's guide

Model use at your institution

operational
for research
other use

Model code available?

is available?yes
more detailssubject to a convention between Ecole Centrale de Nantes and your institution

Minimum computer resources required

typeWorkstation or supercomputer (NEC SX-5)
time needed for run10 mn to 72 hours
storage< 1 Gbytes

Further information

documentationNo
model referencesSINI, J.-F., S. ANQUETIN & P. G. MESTAYER: Pollutant dispersion and thermal effects in urban street canyons,Atmospheric Environment:, 30, n°15, pp. 2659-2677, 1996. MESTAYER, P. G., & J.-F. SINI: A comprehensive numerical simulation of traffic pollution in a street during one diurnal cycle, Journal of Environmental Monitoring and Assessment, 14, n° 1-6, pp. 508-516. SAHM P., P. LOUKA, M. KETZEL, E. GUILLOTEAU & J.-F. SINI: Intercomparison of Numerical Urban Dispersion Models &#150; Part I: Street Canyon and Single Building Configurations, Journal of Water, Air and Soil Pollution: Focus 2, pp. 587-601.
webpagehttp://www.ec-nantes.fr/DAH/0/fiche_LLMF__structure/
additional information

Model properties

Model type

2D
3D
meteorology
chemistry & transport

Model scale

microscale
mesoscale
macroscale
short term
long term

Meteorological variables

PrognosticDiagnostic
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 iconcentrations Cn for passive scalar species
other variables iiTraffic parameters
other variables iiiSolar heating for wall and ground

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
remarksGaseous pollutants and particles are considered by Eulerian concentration fields - non reactive.

Approximations

Boussinesq
anelastic
hydrostatic
flat earth
remarks

Parametrizations

Meteorology

turbulence schemestandard k - &#949; Chen & Kim model
deep convection
surface exchangeDiagnostic parameters
surface temperatureDiagnostic parameters
surface humidity
radiationDiagnostic parameters
unresolved orographic drag
radiation in vegetation
radiation between obstacles
treatment of obstaclesYes
clouds / rain
remarks

Chemistry & transport

photolysis rate
dry deposition
wet deposition
remarks

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)passive contaminants
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 & transportRead initialization files (ascii) or use default constant values
meteorologyRead initialization files (ascii) or use default analytical values

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

orographyNo
land useNo
obstaclesbuildings
vegetationNo
meteorologySpecified at inflow boundary (analytical or input file) Specified as initial conditions (analytical or input file)
concentrationsIdem
emissionsDiagnostic model for traffic emissions
remarks

Data assimilation

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

Boundary conditions

MeteorologyChemistry & transport
surfaceDirichlet or law-of-the-wall for turbulent variables and mean flow and temperature fieldOptions: Neumann, Laplace, Dirichlet (inflow/outflow)
topOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow), periodicOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow)
lateral inflowOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow), periodicOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow)
lateral outflowOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow), periodicOptions: Neumann, Laplace, Symmetry Dirichlet (inflow/outflow)

Nesting

MeteorologyChemistry & 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
remarksNon uniform grid

Numeric

Meteorology

Grid

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

Time integration

explicit
split-explicit
semi-implicit
other

Spatial discretisation

momentum equations
scalar quantities
additional informationFinite-difference / finite volume Explicit in time Implicit for velocity-pressure coupling
other

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 quantities
additional information
other
chemistry solver

Model resolution

Meteorology

HorizontalVertical
max
min

Chemistry & transport

HorizontalVertical
max
min

Domain size

Meteorology

HorizontalVertical
max
min

Chemistry & transport

HorizontalVertical
max
min

Model Validation and Application

Validation & evaluation

Used validation & evaluation methods

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

Analytic solutions

Meteorology

u
v
w
T
qv
qlc
qsc
qlr
zi
other
testcase description
testcase references
used data set
reference for evaluation
remarksMost of the analytic solutions of Navier Stokes equations

Chemistry & transport

SO2
NO
NO2
NOX
NH3
HNO3
O3
VOC
C6H6
HCHO
CO
CO2
POP
other
testcase description
testcase references
used data set
reference for evaluation
remarks
remarks

Application examples

application examples

Participation in specific model evaluation exercises

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