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GEM/AQ Simulations on Intercontinental Transports Science and Technology Branch Environment Canada.

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Presentation on theme: "GEM/AQ Simulations on Intercontinental Transports Science and Technology Branch Environment Canada."— Presentation transcript:

1 GEM/AQ Simulations on Intercontinental Transports Science and Technology Branch Environment Canada

2 Science and Technology Branch Environment Canada MECHANISM FOR TRANSPACIFIC TRANSPORT OF ANTHROPOGENIC OZONE AND FINE PARTICLES entrainment, dilution ASIA PACIFIC NORTH AMERICA NO x, SO 2, VOC warm conveyor belts, convection aerosols, HNO 3 PAN (~10%) VOCs (long-lived) SO x (~10%) OC aerosol PAN O3O3 NO x O3O3 sulfate Boundary layer Free troposphere 2 km subsidence ozone, sulfate, OC HEMISPHERIC POLLUTION

3 Science and Technology Branch Environment Canada GEM-AQ/MACH Meteorological Model with Chemistry GEM-AQ/MACH Meteorological Model with Chemistry GEM-AQ/MACH Emissions Processing System SMOKE Emissions Processing System SMOKE Forecasts ozone, PM 2.5, PM 10 Forecasts ozone, PM 2.5, PM 10 AQ – Air Quality MACH – Modelling Air quality and CHemistry High spatial and temporal resolutions

4 Science and Technology Branch Environment Canada GEM Global Environment Model Global Uniform 400x200 ~ 90 km Variable Global Focused ~ 25 km Limited Area ~ 200 m Canadian Weather Forecast Model

5 Science and Technology Branch Environment Canada Inside 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 Emissions Flux GEM – Transports Advection Convection Vertical Diffusion Particle micro-phys. + Cloud Processes + In. Het. Chem. (Aerosol Activation, Aqueous Chem., cloud/precipitation scavenging, evaporation ) 12 – Size bins ( ISORROPIA and HETV {SO 4 - NO 3 - NH 4 } ) CAM – Canadian Aerosol Module (Nucleation + Condensation, Coagulation, Dry Dep.)

6 Science and Technology Branch Environment Canada GEM/AQ Model GEM-AQ: Global Environmental Multiscale model (EC) – with Air Quality (MAQNet) GEM-AQ: Global Environmental Multiscale model (EC) – with Air Quality (MAQNet) Online gas phase chemistry and aerosol package (CAM, S. Gong, EC) Online gas phase chemistry and aerosol package (CAM, S. Gong, EC) 50 gas phase species, 4 size-resolved aerosol types (12 bins each) 50 gas phase species, 4 size-resolved aerosol types (12 bins each) 5 year simulation (2001-2005) with global uniform resolution of 1.8x1.8 degrees (200x100x28L up to 10mb) 5 year simulation (2001-2005) with global uniform resolution of 1.8x1.8 degrees (200x100x28L up to 10mb)

7 Science and Technology Branch Environment Canada Soil Dust at Surface April 1998

8 Science and Technology Branch Environment Canada Surface Sulphate July 1998

9 Science and Technology Branch Environment Canada Surface Ozone March 2000

10 Science and Technology Branch Environment Canada Black Carbon July 1998

11 Science and Technology Branch Environment Canada Sulphate Vertical Section at 40 N, July 1998

12 Science and Technology Branch Environment Canada Soil Dust Vertical Section at 40 N, April 1998

13 Science and Technology Branch Environment Canada Hemispheric Transports of Air Pollutants HTAP To characterize the contribution of inter- continental transports to the local air quality

14 Science and Technology Branch Environment Canada Inter-continental Transports of PCB 28 in 2000

15 Science and Technology Branch Environment Canada Model vs. Observations Comparisons underway: Comparisons underway: Ozonesonde climatology Ozonesonde climatology Ozone and precursor composite data from aircraft Ozone and precursor composite data from aircraft AURA-MLS CO AURA-MLS CO GOME tropospheric column ozone GOME tropospheric column ozone MOPITT, SCIAMACHY, OMI… MOPITT, SCIAMACHY, OMI…

16 Science and Technology Branch Environment Canada Looking up: ozonesondes Monthly mean climatology compiled by Logan (1999) Monthly mean climatology compiled by Logan (1999) 35 stations over the globe 35 stations over the globe Data records mostly from 1980-90’s Data records mostly from 1980-90’s Compared with model results for 2001- 2004 (seasonal means) Compared with model results for 2001- 2004 (seasonal means)

17 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Alert

18 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Edmonton

19 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Goose Bay

20 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Cape Kennedy

21 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Lindenberg

22 www.maqnet.ca AQ2006 Feb 15, 2006lori@yorku.ca Sapporo

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