1 / 33

Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment

Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment. Investigators: Laura Pan (PI, ACD/TIIMES) Ken Bowman (Texas A&M) Mel Shapiro (NOAA/NCAR M M M ) Bill Randel (ACD) Rushan Gao (NOAA) Teresa Campos (ACD/EOL) Chris Davis (MMM) Sue Schauffler (ACD). Collaborators:

thyra
Télécharger la présentation

Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment Investigators: Laura Pan (PI, ACD/TIIMES) Ken Bowman (Texas A&M) Mel Shapiro (NOAA/NCARMMM) Bill Randel (ACD) Rushan Gao (NOAA) Teresa Campos (ACD/EOL) Chris Davis (MMM) Sue Schauffler (ACD) Collaborators: Chris Barnet Jennifer Wei (NOAA/NESDIS Satellite data) Satellite data support: Sylvia Murphy (ACD) Frontal Cloud - flt 2005-12-14

  2. Acknowledgments: Jorgen Jensen Al Schanot Al Cooper Jeff Stith Henry Boynton, Bob Maxson, Lowell Genzlinger and Ed Ringleman Rit Carbone Brian Ridley Enter the Rockies - FLT 051209

  3. Upper Troposphere & Lower Stratosphere - A region of coupled dynamics, chemistry and cloud microphysics

  4. HIAPER Progressive Science Mission (22 November- 23 December, 2005) Daybreak before take off 2005-12-21

  5. NASA A-Train Satellites

  6. Science Objectives • Characterize the dynamical structure of the extratropical tropopause in and around the subtropical jet • Identify the chemical transition from the troposphere to stratosphere across the extratropical tropopause. • Investigate the irreversible STE & mixing produced by multiple scale dynamical processes Low pass of Rockies- Flt 2005-12-07

  7. AIRS Ozone on 250 hPa (in 1x1 degree average) May 15, 2004 Monthly mean May, 2004

  8. AIRS Ozone Cross Section (1x1 degree average) May 15, 2004, Lon=160 E

  9. Chemical Transition using Relative Altitude (RALT) and Tracer-Tracer Correlations (TTC) Stratosphere Stratospheric tracer Tropopause or transition lyr Stratospheric tracer Altitude Troposphere TP Tropospheric tracer Tropospheric tracer

  10. Example : NASA ER-2, POLARIS July 10, 1997 [Pan et al., 2004]

  11. The “Relative Altitude Coordinates” (to locate the chemical transition between St-Tr) CO (RALT) CO (z) CO (pv) [Pan et al., 2004]

  12. ER-2 data O3-H2O (POLARIS)

  13. Model Evaluation WACCM3 1.9x2.5 4x5

  14. START Experiment Highlights • Four successful flights (7-9 hour each, out of 6 planned) • Measurements: O3, H2O, CO, in addition to meteorological parameters (and other possible tracers such as CN) • Near real time satellite data via collaboration with AIRS science team • Sampled several cases of stratospheric intrusion • Obtained information on mixing and STE • Valuable data for AIRS ozone validation Meteor Crater - Flight 2005-12-07

  15. Status of Data and Data Analyses • Ozone data became available during the experiment. Intercomparison with CMDL ozonesonde show excellent agreement. • Initial analyses and comparison with satellite data, meteorological analyses data have been carried out • Water vapor preliminary data became available ~ 2 weeks ago, further calibration in progress • CO data is still under Q/C verification • Trajectory analyses in progress

  16. Ozone Validation with CMDL Ozonesonde

  17. START Flight #2 (502RF03 -051207)

  18. Flight RF03 - 2005-12-07

  19. START Flight #2 (RF03 -051207)

  20. Enhancement of Ozone at Lower Troposphere due to the Intrusion

  21. START Flight #4 RF08 - 2005-12-14

  22. START Flight #4 RF08 - 2005-12-14

  23. START Flt #4 2005-12-14

  24. START Flight #1 2005-12-01 (502RF01)

  25. START Flight #1 2005-12-01 (502RF01)

  26. Stratospheric Intrusion and the Separation of the Thermal and Dynamical Tropopause

  27. O3 (z) O3 (RALT) H2O (RALT) H2O (z)

  28. Summary Results from the START experiment • Demonstrated the capability of HIAPER in UTLS studies • Initial data provided good validation for the satellite retrievals • Sampled multiple cases of stratospheric intrusions. Characterization of the air mass in the region of intrusion using tracer-tracer correlation and trajectory model is in progress

  29. Thank You ! Shadows of Monument Valley - Flight 051209

More Related