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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.

ECHMERIT:

General information

Model name and version

short nameECHMERIT
full name
revision
date04.10.2007
last change

Responsible for this information

nameGerlinde Jung
instituteIIA-CNR
addressc/o UNICAL
zip87036
cityRende
countryItaly
phone++39-0984-493250
fax
e-mailg.jung(belongs-to)cs.iia.cnr.it

Additional information on the model

Contact person for model code

same as person above
nameGerlinde Jung
instituteIIA-CNR
divisionsc/o UNICAL
street
zip87036
cityRende
countryItaly
phone++39-0984-493250
emailg.jung(belongs-to)cs.iia.cnr.it
fax

Model developer and model user

developer and userGerlinde Jung, IIA-CNR Ian Hedgecock, IIA-CNR

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?no
more details

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 idivergence, ln(surface pressure)
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 gasesHg, HgO, Hgp, HgIIaq
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(Roeckner et al.,2003)
deep convection(Roeckner et al.,2003)
surface exchange(Roeckner et al.,2003)
surface temperature(Roeckner et al.,2003)
surface humidity(Roeckner et al.,2003)
radiation(Roeckner et al.,2003)
unresolved orographic drag(Roeckner et al.,2003)
radiation in vegetation
radiation between obstacles
treatment of obstacles
clouds / rain(Roeckner et al.,2003)
remarks

Chemistry & transport

photolysis rateFast-J mechanism is included (Wild et al., 2004)
dry depositionThe dry deposition scheme is based on the multiple-resistances approach of Wesely (1977). Within ECHMERIT an approach similar to the one published by Kerkweg et al.(2006) is used.
wet depositionLoss through wet deposition as proportional to the concentration of air pollutants. The scavanging rate depends on an assumed scavanging efficiency, the total rainfall intensity (gridscale and subgridscale) and the volume fraction of liquid water in clouds.
remarks

Chemical reactions

Gas & wet phase chemistry

chemical transformations calculated
chemical transformations neglected
other
gas phase chemistry (give details)Based on the CBM-Z mechanism (Zaveri and Peters, 1999), and extended by mercury chemistry (Hedgecock et al., 2006). The mechanism (gas and wet phase) now includes 120 chemical species (of which 65 in gas phase) with a total number of 288 chemical reactions.
wet phase chemistry (give details)see gas phase
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 & transportTransport is calculated, using the flux-form semi-Lagrangian advection scheme of Lin & Rood, 1996, that is already implemented in ECHAM5.
meteorologyflux-form semi-Lagrangian advection scheme of Lin & Rood, 1996

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

orography
land use
obstacles
vegetation
meteorologyECMWF reanalysis AMIP SST
concentrations
emissions Anthropogenic and biogenic emissions: POET emission inventory (Granier et al., 2005). Mercury emission data: AMAP Mercury inventory (Pacyna et al., 2005).
remarks

Data assimilation

MeteorologyChemistry & transport
nudging technique
adjoint model
3D-VAR
4D-VAR
OI
detailsThe nudging scheme of ECHAM5 is applied to relax model meteorology towards ECMWF reanalysis data. But it can also be run without nudging.

Boundary conditions

MeteorologyChemistry & transport
surface
top
lateral inflow
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(Roeckner et al.,2003)
scalar quantities(Roeckner et al.,2003)
additional information(Roeckner et al.,2003)
othertransport: semi-lagrangian

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
othertransport: semi-lagrangian
chemistry solverSecond order Rosenbrock solver. The chemistry module was prepared using the KPP (Kinetic Pre-Processor) of Damian et al., 2002.

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
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)