ratoire d’aérologie (CNRS, TOULOUSE) group (Emissions-Depostion-Impacts, C. Liousse) Measurements campaigns : IDAF/AMMA/SACCLAP and experiments in the LA combustion chamber (Mass, Chemical speciation of the aerosol,aerosol size/chemistry,physical properties, in air and in rains) Activity in multiscale atmospheric chemistry modelling Collaborations: Link with LAMP/LOA, ICTP (UNESCO) and TM4-TM5 group. Strong collaborations with African Researchers : Ivory Coast, Senegal, Benin, Cameroon, South Africa, Niger, Mali, Congo : 6 shared phD at this time Involvement in AMMA :
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Laboratoire d’aérologie (CNRS, TOULOUSE) EDI group (Emissions-Depostion-Impacts, C. Liousse)
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Laboratoire d’aérologie (CNRS, TOULOUSE)EDI group (Emissions-Depostion-Impacts, C. Liousse)
Measurements campaigns : IDAF/AMMA/SACCLAP and experiments in the LA combustion chamber (Mass, Chemical speciation of the aerosol,aerosol size/chemistry,physical properties, in air and in rains)
Activity in multiscale atmospheric chemistry modelling
Collaborations: Link with LAMP/LOA, ICTP (UNESCO) and TM4-TM5 group.
Strong collaborations with African Researchers : Ivory Coast, Senegal, Benin, Cameroon, South Africa, Niger, Mali, Congo : 6 shared phD at this time
Involvement in AMMA :
Modelling of African aerosol in the context of AMMA
Main scientific objectives :
Improving the characterization of aerosol mixture in the 3D models ….
• Sources and transport : cf Liousse presentation.• Physical and chemical state of the mixing• Optical and hygroscopic properties• Impact on regional budgets (transport / deposition)• Impact on regional radiative forcing
… for a better characterization of aerosol/chemistry/climate interactions over the region.
loca
lre
gio
nal
con
tin
enta
lg
lob
al
SOP LOPEOP
GAME(rad. Trans.)
ORISAMOD
MesoNH-C Met., 3- 40 km
+ ORISAM
TM4 (CTM, ~ 3°x 2° )
+ ORISAM
RegCM3 (Reg climate, 20 – 90 km.)
( + ORISAM in dev.)
Model used and developped space
time
sulphate
Water
SOAB
nitrate
pH
in each bin:
Absorption/
adsorption + internal equilibriu
m
Inorganic Condensable
H2SO4
NH3
HNO3
Organic Condensable
SOAASOAB
ORISAM Bessagnet et al, 2004
Cousin et al, 2005Liousse et al, 2005Mallet et al, 2005
COV
SO2
NOx
Gaseous chemistry
Dry and wet deposition
COUPLING COUPLING (Guillaume et al., 2007a)(Guillaume et al., 2007a)
TM4 (initial state)(Van Velthoven et al., 1996):
-3°x2° horizontal, -31 vertical levels (jsq. 10hPa),- 38 gaseous components-(+3 aerosol : sulfates, nitrates, ammonium without size distribution)-Emission : EDGAR3, POET (COV),-ECMWF,-Dry and wet deposition-Gaseous chemistry (Houweling et al., 1998)
BC(sea-salt,
dust)
OCp
Emissions
Aerosol sectional model
40nm 10µm
ORISAM = ORganic and Inorganic Sectional Aerosol Model
SOAA
ammonium
Development of ORISAM (Organic and Inorganic Spectral Aerosol model)(Bessagnet et al. 2004, Cousin et al. 2005, Liousse et al., 2005)