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This study by Ting S. Chen and D.J. Jacob at Harvard University presents findings from the TRACE-P aircraft mission to identify relationships between pollutants like CO2, CO, C2Cl4, CH3Cl, HCN, CH4, C2H6, and examine source signatures in Asian plumes sampled during the mission. The study aims to test 3-D model simulations using these source signatures, particularly focusing on Chinese (Shanghai, Beijing) and Japanese urban plumes. Analysis of CO2 vs. CO and other pollutant relationships revealed distinct signatures for biomass burning, Chinese, and Japanese plumes, providing valuable insights for air quality management in the region.

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Objectives:

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  1. 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

  2. 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

  3. 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

  4. Preliminary Conclusions: • Biomass burning, China, Japan plumes have distinct CO2/CO signatures

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