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GEM/AQ Simulations on Intercontinental Transports. Science and Technology Branch Environment Canada. MECHANISM FOR TRANSPACIFIC TRANSPORT OF ANTHROPOGENIC OZONE AND FINE PARTICLES. HEMISPHERIC POLLUTION. PAN (~10%) VOCs (long-lived). warm conveyor belts, convection. subsidence. O 3. - PowerPoint PPT Presentation
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GEM/AQ Simulations onGEM/AQ Simulations onIntercontinental TransportsIntercontinental Transports
Science and Technology BranchEnvironment Canada
Science and Technology BranchEnvironment Canada
MECHANISM FOR TRANSPACIFIC TRANSPORTMECHANISM FOR TRANSPACIFIC TRANSPORTOF ANTHROPOGENIC OZONE AND FINE OF ANTHROPOGENIC OZONE AND FINE
PARTICLESPARTICLES
entrainment, dilution
ASIA PACIFIC NORTH AMERICA
NOx, SO2, VOC
warm conveyor
belts,convection
aerosols,HNO3
PAN (~10%)
VOCs (long-lived)
SOx (~10%)
OCaerosol PAN
O3
NOxO3sulfate
Boundary layer
Free troposphere2 km
subsidence
ozone, sulfate, OC
HEMISPHERIC POLLUTION
Science and Technology BranchEnvironment Canada
GEM-AQ/MACHGEM-AQ/MACH
Meteorological Model with Chemistry
GEM-AQ/MACH
Emissions Processing SystemSMOKE
Forecastsozone, PM2.5, PM10
AQ – AQ – AAir ir QQualityualityMACH MACH –– MModelling odelling AAir quality and ir quality and CHCHemistryemistry
High spatial and temporal resolutions
Science and Technology BranchEnvironment Canada
GEM GEM GGlobal lobal EEnvironment nvironment MModelodel
Global Uniform400x200 ~ 90 km
Variable GlobalFocused ~ 25 km
Limited Area ~ 200 m
Canadian Weather Forecast Model
Science and Technology BranchEnvironment Canada
Inside GEM-AQ/MACHInside GEM-AQ/MACH
Gas-Phase Chemistry+
SOA formation
(ADOM-II Mechanism,
Odum or Jiang SOA approach)
One-step Operator Splitting:
Dry Deposition
Velocities of Gases
Major Point Source
EmissionsFlux
GEM – TransportsAdvection
ConvectionVertical Diffusion
Particle micro-phys. + Cloud Processes + In. Het. Chem.
(Aerosol Activation,Aqueous Chem.,
cloud/precipitation scavenging,evaporation )12 – Size bins
( ISORROPIAand HETV
{SO4 - NO3 - NH4} )
CAM – Canadian Aerosol ModuleCAM – Canadian Aerosol Module
(Nucleation + Condensation, Coagulation,
Dry Dep.)
Science and Technology BranchEnvironment Canada
GEM/AQ Model GEM/AQ Model
GEM-AQ: GEM-AQ: GGlobal lobal EEnvironmental nvironmental MMultiscale ultiscale model (EC) – with model (EC) – with AAir ir QQuality (MAQNet)uality (MAQNet)Online gas phase chemistry and aerosol Online gas phase chemistry and aerosol
package (CAM, S. Gong, EC)package (CAM, S. Gong, EC)50 gas phase species, 4 size-resolved 50 gas phase species, 4 size-resolved
aerosol types (12 bins each)aerosol types (12 bins each)5 year simulation (2001-2005) with global 5 year simulation (2001-2005) with global
uniform resolution of 1.8x1.8 degrees uniform resolution of 1.8x1.8 degrees (200x100x28L up to 10mb) (200x100x28L up to 10mb)
Science and Technology BranchEnvironment Canada
Soil Dust at Surface April 1998Soil Dust at Surface April 1998
Science and Technology BranchEnvironment Canada
Surface Sulphate July 1998Surface Sulphate July 1998
Science and Technology BranchEnvironment Canada
Surface Ozone March 2000Surface Ozone March 2000
Science and Technology BranchEnvironment Canada
Black Carbon July 1998Black Carbon July 1998
Science and Technology BranchEnvironment Canada
Sulphate Vertical Section at 40 N, July 1998
Science and Technology BranchEnvironment Canada
Soil Dust Vertical Section at 40 N, April 1998
Science and Technology BranchEnvironment Canada
Hemispheric Transports of Air PollutantsHemispheric Transports of Air PollutantsHTAPHTAP
To characterize the contribution of inter-To characterize the contribution of inter-continental transports to the local air continental transports to the local air
qualityquality
Science and Technology BranchEnvironment Canada
PCB 028 Global Transport
A B D E
F
G
L
C16002758
249817778
281-582
-735987
22549941
-178-246
-248 741
13962644
-227-402
111-108
22099240
54-198
-736-1677
14-245
2151002
79-148 PCB028 Regional Budget
A B C D E F G L
PCB
Tot
al m
ass
[kg/
yr]
-80000
-60000
-40000
-20000
0
20000
40000
60000
80000Anthropogenic EmissionsExchangesDepositionsDegradationNet Transport
Inter-continental Transports of PCB 28 in 2000
Science and Technology BranchEnvironment Canada
Model vs. ObservationsModel vs. Observations
Comparisons underway:Comparisons underway:Ozonesonde climatologyOzonesonde climatologyOzone and precursor composite data from Ozone and precursor composite data from
aircraftaircraftAURA-MLS CO AURA-MLS CO GOME tropospheric column ozoneGOME tropospheric column ozoneMOPITT, SCIAMACHY, OMI…MOPITT, SCIAMACHY, OMI…
Science and Technology BranchEnvironment Canada
Looking up: ozonesondesLooking up: ozonesondes
Monthly mean climatology compiled by Monthly mean climatology compiled by Logan (1999)Logan (1999)
35 stations over the globe35 stations over the globeData records mostly from 1980-90’sData records mostly from 1980-90’sCompared with model results for 2001-Compared with model results for 2001-
2004 (seasonal means)2004 (seasonal means)
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Alert
1000
850
700
500
400
300
200
150
100
0 50 100 150 200
Alert (82N, 62W) - DJF
GEMLogan
1000
850
700
500
400
300
200
150
100
0 50 100 150 200
Alert (82N, 62W) - MAM
GEMLogan
1000
850
700
500
400
300
200
150
100
0 50 100 150 200
Alert (82N, 62W) - JJA
GEMLogan
1000
850
700
500
400
300
200
150
100
0 50 100 150 200
Alert (82N, 62W) - SON
GEMLogan
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Edmonton 100
1000 0 50 100 150 200
Edmonton (53N, 114W) - DJF
GEMLogan
100
1000 0 50 100 150 200
Edmonton (53N, 114W) - MAM
GEMLogan
100
1000 0 50 100 150 200
Edmonton (53N, 114W) - JJA
GEMLogan
100
1000 0 50 100 150 200
Edmonton (53N, 114W) - SON
GEMLogan
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Goose Bay 100
1000 0 50 100 150 200
Goose Bay (53N, 60W) - DJF
GEMLogan
100
1000 0 50 100 150 200
Goose Bay (53N, 60W) - MAM
GEMLogan
100
1000 0 50 100 150 200
Goose Bay (53N, 60W) - JJA
GEMLogan
100
1000 0 50 100 150 200
Goose Bay (53N, 60W) - SON
GEMLogan
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Cape Kennedy 100
1000 0 50 100 150 200
Cape Kennedy (29N, 31W) - DJF
GEMLogan
100
1000 0 50 100 150 200
Cape Kennedy (29N, 31W) - MAM
GEMLogan
100
1000 0 50 100 150 200
Cape Kennedy (29N, 31W) - JJA
GEMLogan
100
1000 0 50 100 150 200
Cape Kennedy (29N, 31W) - SON
GEMLogan
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Lindenberg 100
1000 0 50 100 150 200
Lindenberg (52N, 14E) - DJF
GEMLogan
100
1000 0 50 100 150 200
Lindenberg (52N, 14E) - MAM
GEMLogan
100
1000 0 50 100 150 200
Lindenberg (52N, 14E) - JJA
GEMLogan
100
1000 0 50 100 150 200
Lindenberg (52N, 14E) - SON
GEMLogan
AQ2006 Feb 15, 2006 lori@yorku.ca www.maqnet.ca
Sapporo 100
1000 0 50 100 150 200
Sapporo (43N, 141E) - DJF
GEMLogan
100
1000 0 50 100 150 200
Sapporo (43N, 141E) - MAM
GEMLogan
100
1000 0 50 100 150 200
Sapporo (43N, 141E) - JJA
GEMLogan
100
1000 0 50 100 150 200
Sapporo (43N, 141E) - SON
GEMLogan
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