The characterization of pollution sources in eastern Asia using observations from the TRACE-P aircraft mission Ting S. Chen, D.J. Jacob, et al. Harvard.

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Presentation transcript:

The characterization of pollution sources in eastern Asia using observations from the TRACE-P aircraft mission Ting S. Chen, D.J. Jacob, et al. Harvard University Atmospheric Chemistry Modeling Group Objectives: Identify CO2-CO-C2Cl4-CH3Cl-HCN and CH4-C2H6-CO relationships in Asian plumes sampled during TRACE-P Relate these relationships to specific source signatures Use these source signatures to test TRACE-P 3-D model simulations

Chinese (Shanghai and Beijing) and Japanese urban plumes DC8-13: Yokota Local 1, 2001 March 21 CO2vs.CO Red points: Japanese plume - high CO2/CO, C2Cl4/CO - low HCN, CH3Cl Yellow/Blue points: Chinese plume - high HCN, CH3Cl: biofuel? C2Cl4 vs.CO HCNvs.CO CH3Cl vs. CO

Biomass burning plume from SE Asia (in green) P3-B : Hong Kong Local 1, 2001 March 7 Biomass burning plume from SE Asia (in green) CO2 vs. CO HCN vs. CO C2Cl4 vs. CO Plume’s source region: Southeast Asia

Preliminary Conclusions: CO2 /CO ppm/ppb HCN/CO ppt/ppb CH3Cl/CO C2Cl4/CO Biomass Burning 0.01-0.025 ~1+ .45-.6 .004-0.05 China pollution 0.016-0.04 ~1 .6-2.2 0.06-0.12 Japan pollution 0.05-0.08 nc 0.25+ Biomass burning, China, Japan plumes have distinct CO2/CO signatures