CTM MOCAGE

Centre National de Recherches Météorologiques/ GMGEC/CATS

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Forced mode of the inter-comparison exercice

Evaluation of the meteorological and chemical fields

MOCAGE : a polyvalent tool to simulate atmospheric chemistry

South-East

France

Europe

Globe

Domains

0.08°

0.25°

1°

2°

Horizontal resolution

ALADIN

ARPEGE

ARPEGE

ARPEGE

Meteo. forcing

GENEMIS

Specific Em. Inv

EDGAR et GEIA

EDGAR et GEIA

EDGAR et GEIA

Emission inventories

Chemical schemes

REPROBUS

SAPRC

RACM

CBM-IV

MELCHIOR

EMEP

HARVARD

IMAGES5

MOGUNTIA

47 levels (,P) up to 5 hPa (7 in the boundary layer)Convection : [Bechtold] Turbulent diffusion : [Louis]Dry deposition : extension [Wesely] Nebulosity : 3D (on-line)

MOCAGE : a polyvalent tool to simulate atmospheric chemistry

South-East

France

Europe

Globe

Domains

0.08°

0.25°

1°

2°

Horizontal resolution

ALADIN

ARPEGE

ARPEGE

ARPEGE

Meteo. forcing

GENEMIS

Specific Em. Inv

EDGAR et GEIA

EDGAR et GEIA

EDGAR et GEIA

Emission inventories

Chemical schemes

REPROBUS

SAPRC

RACM

CBM-IV

MELCHIOR

EMEP

HARVARD

IMAGES5

MOGUNTIA

47 levels (,P) up to 5 hPa (7 in the boundary layer)Convection : [Bechtold] Turbulent diffusion : [Louis]Dry deposition : extension [Wesely] Nebulosity : 3D (on-line)

Every 3 hours

(operational analyse every 6 hours)

Point source = area sources

Specific emission inventory : NOx

Specific emission inventory : Isoprene

Comparison to observations & 3D-files

On – line interpolator (8 cubes around)

Adapted to the different measurement platforms

Taking into account model surface height and altitude of the measurement

Off-line run option available

Model strengths/weakness

WEAKNESS• Resolution (against meso-scale processes)• No thermo. aerosol modules yetSTRENGTHS

• No chemical boundary conditions• Modular tool

• Chemical schemes• Grid nesting• Treatment of convection• Meteorology (as off-line model)• Resolution

General comments on comparisons METEOROLOGICAL FIELD

FALCON-WIND

24/06/2004 :

Issue on the humidity field

General comments on comparisons METEOROLOGICAL FIELD

FALCON-WIND

24/06/2004 :

Issue on the humidity field

General comments on comparisons METEOROLOGICAL FIELD

FALCON-WIND

25/06/2004

General comments on comparisons METEOROLOGICAL FIELD

FALCON-WIND

25/06/2004

General comments on comparisonsCHEMICAL FIELD

AIRCRAFTS

EXPLORATION A1

General comments on comparisonsCHEMICAL FIELD

AIRCRAFTS

EXPLORATION A2

General comments on comparisonsCHEMICAL FIELD

AIRCRAFTS

EXPLORATION A5

General comments on comparisonsCHEMICAL FIELD

AIRCRAFTS

EXPLORATION CLU

General comments on comparisonsCHEMICAL FIELD

CVB

General comments on comparisonsCHEMICAL FIELD

LIDAR

POI3 POI4 POI2

Conclusion

MOCAGE : able to provide reasonable large scale field

Studies performed so far show that chemical modeling in this area is highly sensitive to

Chemical scheme use (SAPRC-RACM)Inventories (mainly for primary coumpounds)Chemical boundary conditionsSpin-up

(see Observed and modelled chemical weather during ESCOMPTE, Atm. Res.)

Different problems Some morning vertical distribution High ozone concentration over sea

MERA station and MOZAIC profiles in process