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CTM MOCAGE. Centre National de Recherches Météorologiques/ GMGEC/CATS. 1rst ESCOMPTE MODELLING EXERCICE WORKSHOP Toulouse, Mayl 2004. Forced mode of the inter-comparison exercice Evaluation of the meteorological and chemical fields. Domains. Horizontal resolution. Meteo. forcing.

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ctm mocage

CTM MOCAGE

Centre National de Recherches Météorologiques/ GMGEC/CATS

1rst ESCOMPTE MODELLING EXERCICE WORKSHOP

Toulouse, Mayl 2004

  • Forced mode of the inter-comparison exercice
  • Evaluation of the meteorological and chemical fields
mocage a polyvalent tool to simulate atmospheric chemistry

Domains

Horizontal resolution

Meteo. forcing

Emission inventories

Globe

ARPEGE

EDGAR et GEIA

Europe

ARPEGE

EDGAR et GEIA

France

0.25°

ARPEGE

EDGAR et GEIA

South-East

0.08°

ALADIN

GENEMIS

Specific Em. Inv

MOCAGE : a polyvalent tool to simulate atmospheric chemistry

47 levels (s,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 chemistry1

Domains

Horizontal resolution

Meteo. forcing

Emission inventories

Globe

ARPEGE

EDGAR et GEIA

Europe

ARPEGE

EDGAR et GEIA

France

0.25°

ARPEGE

EDGAR et GEIA

South-East

0.08°

ALADIN

GENEMIS

Specific Em. Inv

MOCAGE : a polyvalent tool to simulate atmospheric chemistry

47 levels (s,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

slide6

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
slide7

WEAKNESS

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

STRENGTHS

  • No chemical boundary conditions
  • Modular tool
    • Chemical schemes
    • Grid nesting
    • Treatment of convection
    • Meteorology (as off-line model)
    • Resolution

Model strengths/weakness

slide8

General comments on comparisons

METEOROLOGICAL FIELD

FALCON-WIND

24/06/2004 :

Issue on the humidity field

slide9

General comments on comparisons

METEOROLOGICAL FIELD

FALCON-WIND

24/06/2004 :

Issue on the humidity field

slide10

General comments on comparisons

METEOROLOGICAL FIELD

FALCON-WIND

25/06/2004

slide11

General comments on comparisons

METEOROLOGICAL FIELD

FALCON-WIND

25/06/2004

slide12

General comments on comparisons

CHEMICAL FIELD

AIRCRAFTS

EXPLORATION A1

slide13

General comments on comparisons

CHEMICAL FIELD

AIRCRAFTS

EXPLORATION A2

slide14

General comments on comparisons

CHEMICAL FIELD

AIRCRAFTS

EXPLORATION A5

slide15

General comments on comparisons

CHEMICAL FIELD

AIRCRAFTS

EXPLORATION CLU

slide17

General comments on comparisons

CHEMICAL FIELD

LIDAR

POI3

POI4

POI2

slide18

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 conditions
    • Spin-up

Conclusion

MERA station and MOZAIC profiles in process

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

  • Different problems
    • Some morning vertical distribution
    • High ozone concentration over sea
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