1. Trajectory Analyses for the Kunming Measurements Qiujun Fan 范秋君, IAP (with Jianchun Bian) Leigh Munchak, NCAR (with Laura Pan) Kenneth Bowman Texas A&M University

2. Large-Scale Conditions of the Kunming Campaign (Aug 2009)

3. Objectives of This Study Identify origins and transport pathways of the air mass that contributes to the KunMing Measurements –Inside vs. outside the anticyclone –Convective influence in the UT – tropics vs. Tibetan plateau Performance of the trajectory model in this type of study - How well the convective influence is represented in the analyses winds

4. Model and Analyses Trajectory Model used: TRAJ3D (Bowman, 1993) –Kinematic using 3D winds Meteorological Analyses used: NCEP GFS/FNL –1x1 degree Lat/Lon, 26 pressure levels 1000 - 1 hPa, 6 hourly Limitations –No vertical velocity field above the 100 hPa level in the data

5. Case1 Deep Conv. in Typhoon @ Large-Scale Transp. Low O3 & H2O at 100 mb Strong shear below and above Positive correlation between O3 and RHi

6. Case 1

7. Case 2 Extra-Tropical Stratospheric Intrusion Thick dry and high-O3 layer in mid-troposphere Case 0807

8. Case 2

9. Case 3 Super-Saturation with Multiple or Thick Layers

10. Case 3

11. Summary and Conclusions Air mass contributes to the KunMing Measurements – from both inside and outside of the anticyclone Convective influence in the UT – tropical storm/Typhoon had significant influence to the layer near the cold point Performance of the trajectory model – consistent with key observational features of the soundings – more work will follow up