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VIEWS: 6 PAGES: 18

									Overview of the Canadian Contribution to INTEX-B




 Randall Martin, Aaron van Donkelaar, Thomas Walker, Tom Duck
                       Dalhousie University

Richard Leaitch, Anne Marie Macdonald, Kurt Anlauf, Shao-Meng Li,
 Desiree Toom-Sauntry, John Liggio, Katherine Hayden, Peter Liu,
                       Alexandra Steffen
                      Environment Canada

                    Qi Zhang, SUNY Albany

   Ian McKendry, Jeff Lundgren University of British Columbia

    Mike Cubison, Jose-Luis Jimenez University of Colorado

                   Doug Worsnop, Aerodyne
                        Whistler Peak (2182 m)


Measurements since 2002:
Trace Gases: O3, CO, Hg (Tekran)
Particle Physics:
      • Particle distributions from 10nm to 20 μm
             •TSI SMPS (10 nm to 500 nm), Grimm OPC (400 nm to 20 μm)
Particle Chemistry:
      • Filter packs (inorganics, OC/EC)

      • High-Resolution Time-of-Flight AMS (WTOF-AMS)
      • Moudi impactor samples (inorganics, metals (ICP, XRF))
Particle Light Scattering and Absorption
      •Nephelometer, PSAP
Temperature, Dew point, Winds
                     Indicates additions during the INTEX intensive
Environment Canada                                      Anne Marie Macdonald
                   Whistler Peak: Intensive and Long-Term Measurements
                                                                                                 40

                                                                                                       Particle Number dN, >0.3- 30 mdiameter




                                                                                      dN (cm )
                                                                                                 30




                                                                               -3
            250                                                                                  20

                                                                                                 10
            200
                                                                                                  0
CO (ppbv)




            150                                                                            200
                                                                                                                                        X Data




                                                                    CO (ppbv)
                        2002
                        2003
            100                                                                            160
                        2004
                        2005
                                                                                           120          CO at Whistler Peak
             50
             55   jan    mar     may      jul    sep     nov
                                                                                                 80
             50                                                                                       Ozone at Whistler Peak
                                                                                                 70
O3 (ppbv)




             45
                                                                    O3 (ppbv)




                                                                                                 60
             40
                                                                                                 50
             35
                         2002                                                                    40
             30          2003
                                                                                                 30
                         2004                                                                    20                                                                                      140




                                                                                                                                                                                               Relative Humidity (percent)
             25
                         2005                                                                                                                                                            120
                                                                    Temperature (C)




                                                                                                 15                                                               Temperature
             20                                                                                                                                                   Relative Humidity      100
                  jan feb mar apr may jun jul aug sep oct nov dec                                10
                                                                                                                                                                                         80
                                                                                                 5
                                                                                                                                                                                         60
                                                                                                 0
                                                                                                                                                                                         40
                                                                                                 -5                                                                                      20
                                                                                         -10                                                                                             0
                                                                                        17/04/2006                24/04/2006       01/05/2006        08/05/2006             15/05/2006

                                                                                                                                   Date/Time (PST)

Anne Marie Macdonald
    Long-term Measurements at Whistler Reveal Unusually
2.5
               Large Events During INTEX-B
                        Sulphate(ug/m3)                                                                                        16-May-06
  2


1.5


  1


0.5


  0
      Dec/01




                                          Dec/02




                                                                              Dec/03




                                                                                                                     Dec/04




                                                                                                                                                            Dec/05
               Mar/02




                                                   Mar/03




                                                                                       Mar/04




                                                                                                                                Mar/05




                                                                                                                                                                      Mar/06
                        Jun/02

                                 Sep/02




                                                            Jun/03

                                                                     Sep/03




                                                                                                Jun/04

                                                                                                            Sep/04




                                                                                                                                         Jun/05

                                                                                                                                                   Sep/05




                                                                                                                                                                               Jun/06
                        0.14
                                               Calcium(ug/m3)

                        0.12

                                                                                                                                              Apr-26
                         0.1
                                                                                                                                                  May-16

                        0.08



                        0.06



                        0.04



                        0.02


Anne Marie                 0
Macdonald                 03/Jul/02          19/Jan/03          07/Aug/03          23/Feb/04             10/Sep/04            29/Mar/05           15/Oct/05          03/May/06
  High-Resolution Time-of-Flight AMS
      Regional? Organic Influence            May 14
 Long-Range Transport Event of Sulfate


                                                  GEOS-Chem (2 km)




                                             May 15




                                             May 16




Qi Zhang and John Liggio    Aaron van Donkelaar     SO42- (ug m-3)
Lidar Measurements Show Subsiding Aerosol Plume
         During Enhanced Sulfate Period




                                       Tom Duck
          Airborne measurements from a Cessna 207
31 project flights
Ozone - all flights
CO - 10 flights
Particle chemistry - 24 flights
    (Quad-AMS and single filter for major ions)
Particle number and size - all flights
    (CPC, PCASP, FSSP300)
Particle light scattering - all flights
    (Radiance nephelometer)




                                                  Richard Leaitch
Cessna - C130, Whistler Summit Comparison: May 3rd
                      r=0.91       r=0.88       r=0.63
                      slope=1.20   slope=1.70   slope=1.79




                        Aaron van Donkelaar and Richard Leaitch
Cessna - C130, Canada-US Border Comparison: May 9th




                                                 r=0.98
                                                 slope=1.28




                       Aaron van Donkelaar and Richard Leaitch
              Profile Often Revealed Enhanced Sulfate Above ~3 km
                       and Enhanced Organic Aerosol Below
                                        Intex-B, Flight 14 - May 3 pm, 2006
                   6000


                   5000


                   4000
Altitude (m-MSL)




                   3000
                                                                         F300 >1um
                                                                         PCASP <0.6um mass est.
                   2000                                                  AMS SO4
                                                                         AMS Organics

                   1000


                      0
                          0   0.5        1        1.5     -3
                                                             2         2.5      3 -3       3.5     4
                                    Particle Mass Cn (g m ); Particle Number Cn (cm )
                                                                                         Richard Leaitch
                              Sulfate Plume at 2 km, Coincident with Summit
                                         Intex-B, Flight 29 - May 15 am, 2006

                   6000

                                                                   F300 >1um
                   5000                                            PCASP <0.6um mass est.
                                                                   AMS SO4
                                                                   AMS Organics ADL
                   4000                                            AMS NO3
Altitude (m-MSL)




                   3000


                   2000


                   1000


                      0
                          0           1                2                3              4             5
                                                            -3                        -3
                                      Particle Mass Cn (g m ); Particle Number Cn (cm )

                                                                                           Richard Leaitch
                              Puzzling Organic Enhancement at 4 km
                                        Intex-B, Flight 32 - May 16 pm, 2006

                   6000
                                                                        F300 #>1um
                                                                        PCASP <0.6um mass est.
                   5000                                                 AMS Organics ADL
                                                                        AMS SO4
                                                                        AMS NO3
                   4000
Altitude (m-MSL)




                   3000


                   2000


                   1000


                      0
                          0      5              10            15           20           25           30
                                                           -3                        -3
                                     Particle Mass Cn (g m ); Particle Number Cn (cm )


                                                                                             Richard Leaitch
          Campaign Average Aerosol Profiles


                              AMS measurements scaled using PCASP
                   Sulfate    size distribution (assume internally
                              mixed) to total mass concentration for
                              comparison with GEOS-Chem
                              Likely an upper limit



                                   GEOS-Chem Asian SO2
                                   Emissions for 2006
                                   275% increase over 2000
Nitrate
               Organic




                             Aaron van Donkelaar and Richard Leaitch
April 22-25 Plume: Sulfate Primarily of Asian Origin


         GEOS-
                                 GEOS-Chem at 675 hPa on April 24
         Chem


                 AMS scaled
                 (using PCASP)
No
Asia             likely an
                 upper limit



              Simulations
              use 2006
              Asian
              emissions                 East Asian SO42- (ug m-3)




       SO42- (ug/m3)
                                                  Aaron van Donkelaar
     Sulfate is a Major and Growing Contributor to AOD

                     INTEX-B Average




                                                    Aerosol Optical Depth
 MODIS




GEOS-Chem
(2006 Asian
Emissions)




                                                   from SO4=

                                                   simulated
                                                      AOD

                                                       %
GEOS-Chem
(2006 Asian
Emissions)

                                       Aaron van Donkelaar
Asian Emissions and Lightning NOx Contribute to
          O3 Observed on West Coast




        Measured


      GEOS-Chem
      (2006 emis)
     GEOS-Chem
     (No lightning)

      GEOS-Chem
      (No Asian NOx)




                                  Thomas Walker
    Asian and Lightning NOx Emissions Contribute to the
                    OMI Ozone Columns
OMI / MLS Tropospheric Residual   GEOS-Chem (2006 NOx Emis)




                                                                      Trop O3 (DU)
GEOS-Chem (2006 – No Asian NOx) GEOS-Chem (2006 – No Lightning)




                                                                      ΔTrop O3 (DU)
                                                      Thomas Walker
                                       Posters
Richard Leaitch et al., Summary of the Canadian airborne measurements during INTEX-B

Anne Marie Macdonald et al., Overview of measurements at Whistler Peak during INTEX-B

John Liggio et al., Application of principal component analysis to aerosol mass
   spectrometry data from a high-elevation site in Whistler, BC

Qi Zhang et al., A high-resolution time-of-flight aerosol mass spectrometer study on size-
    resolved aerosol composition at the peak of Whistler Mountain during INTEX-B

Aaron van Donkelaar et al, Long-range transport of Asian sulfur emissions to Canada

Thomas Walker et al., Long-range transport of NOy and O3 during INTEX-B: Satellite,
   aircraft, and model perspectives


                                        Funding
      NSERC
      Environment Canada

								
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