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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.

RCG: REM_Calgrid

General information

Model name and version

short nameRCG
full nameREM_Calgrid
revision
date
last change

Responsible for this information

nameEberhard Reimer
instituteInstitut für Meteorologie
addressCarl-Heinrich-Becker-Weg 6-10
zip12165
cityBerlin
countryGermany
phone+493083871190
fax
e-mailreimer(belongs-to)zedat.fu-berlin.de

Additional information on the model

Contact person for model code

same as person above
nameRainer Stern
instituteInstitut fuer Meteorologie
divisionsTroposphaerische Umweltforschung
streetCarl-Heinrich-Becker-Weg 6-10
zip12165
cityBerlin
countryGermany
phone+493083871229
emailrstern@zedat.fu-berlin.de
fax

Model developer and model user

developer and userRobert J. Yamartino Rainer Stern Eberhard Reimer Andreas Kerschbaumer

Level of Knowledge needed to operate model

basic
intermediate
advanced
remarks

Model use at your institution

operational
for research
other use

Model code available?

is available?yes
more detailskerschba@zedat.fu-berlin.de; rstern@zedat.fu-berlin.de

Minimum computer resources required

type
time needed for run
storage

Further information

documentation
model references
webpage
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 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

Meteorology

turbulence scheme
deep convection
surface exchange
surface temperature
surface humidity
radiation
unresolved orographic drag
radiation in vegetation
radiation between obstacles
treatment of obstacles
clouds / rain
remarks

Chemistry & transport

photolysis rateDepending on zenith angle and cloud cover
dry depositionresistance model.
wet depositionbelow-cloud scavenging dependent on rain intensity and Henry-constant
remarks

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)carbon bond IV mechanism (Gery et al., 1989)
wet phase chemistry (give details)SO2, H2O2 and O3 in the aqueous phase are in equilibrium with the concentrations in the gas phase. Moreover, aqueous SO2 is dissociated into HSO−3 and SO2−3. Henry’s law coefficient and other aqueous equilibrium constants are used ([Seinfeld and Pandis, 1997])
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 detailsISORROPIA (Nenes et al., 1999) for inorganic secondary aerosols SORGAM (Schell et al., 2001) for organic secondary aerosols

Initialization & boundary treatment

Initialization

chemistry & transport
meteorology

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

orographyUSGS Orography
land useLanduse Smiatek et al., 1998
obstacles
vegetation
meteorologyHourly 3D wind gridded fields of wind components, air temperature, air density and humidity. Hourly 2D fields of mixing height, Monin-Obukhov lenght (L), friction velocity (u*), cloud cover, precipitation, surface wind speed and temperature and optional snow cover.
concentrations
emissionsVOC, NOx, CO, SO2, CH4, NH3, PM10, and PM2.5, split into point and gridded area sources. Mass-based, source group dependent NMVOC profiles used to break down the total VOC; EMEP data base (Vestreng, 2003) and TNO-elaborated Builtjes et al., 2003. Local
remarks

Data assimilation

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

Boundary conditions

MeteorologyChemistry & transport
surfaceConcentrations from measurements or literature
topOzone: Logan et al., 1998
lateral inflowTime varying concentrations at lateral boundaries, coming either from measurement or coarser model grid results.
lateral 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
remarks

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 information
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
max30
min1

Chemistry & transport

HorizontalVertical
max30500
min120

Domain size

Meteorology

HorizontalVertical
max
min3000

Chemistry & transport

HorizontalVertical
max3000
min

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 examplesStern, R., Yamartino, R., Graff, A., 2003, Dispersion Modelling within the European Community’s air quality directives: Long term modelling of O3, PM10 and NO2. 26th ITM on Air Pollution Modelling and its application. May 26-30, 2003, Istanbul, Turkey Beekmann, M., A. Kerschbaumer, E. Reimer, R. Stern, D. Möller (2006) PM Measurement Campaign HOVERT in the Greater Berlin area: model evaluation with chemically specified observations for a one year period. Atmospheric Chemistry and Physics Discussions, Vol. 6, p 7285-7321 Reimer, E. und Scherer, B.: An operational meteorological diagnostic system for regional air pollution analysis and long term modeling, in: Air pollution Modelling and its Application IX, edited by: v. Dop, H. und Kallos, G., NATO Challenges f Modern Society, Kluwer Academic/Plenum Publisher, New York, 1992.

Participation in specific model evaluation exercises

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