BRAVO DATA ANALYSES SUMMARY
No. 2
3 September 2001
| Description | Principal Investigator(s) | Planned Completion of Analyses | Means of Communicating Results | Measurements and Data Analyses |
|---|---|---|---|
Analyze temporal and spatial characteristics of aerosols, including synoptic meteorological patterns of episodes |
Lowell Ashbaugh |
October 2001 |
Results presented in part on BRAVO conference calls 1/25/01, 2/8/01 and 5/31/01. |
Analyze ultrafine particles, 0.09 to 0.24 µm, in 6-hr increments by synchrotron XRF, for use in tracking aerosol sources |
Thomas Cahill and Steve Cliff |
October 2001 |
Submit paper to AS&T, fall 2001. Contribution to BRAVO final report, 2002. |
Source profiles for selected sources in Texas |
Judy Chow and John Watson |
Fall 2001 |
Presentation to steering committee. Contribution to BRAVO final report, 2002. |
Analyze ionic composition of PM2.5 and size-resolved aerosol collected at the K-Bar site |
Jeff Collett and Sonia Kreidenweis |
September 2001 |
Results presented in part at BRAVO meeting in August 2000 and conference call 12/7/00. Presentation made at AAAR meeting, November 2000. Paper at A&WMA/AGU visibility conference, October 2001. Submit journal manuscript, fall 2001 Contribution to BRAVO final report in 2002. |
Analyze organic composition of PM2.5 collected at the K-Bar site |
Jeff Collett and Sonia Kreidenweis |
Fall 2001 |
Presentation at BRAVO meeting in September 2001. |
Analyze aerosol growth vs. RH. Compare nephelometer measurements with results from various thermodynamic models and Tang's growth curves. |
Derek Day |
September 2001 |
Paper at A&WMA/AGU visibility conference in October 2001. |
Evaluation of representativeness of the BRAVO study period |
Mark Green |
Winter 2001/2002 |
Presentation to steering committee. |
Aerosol size distribution measurements |
Sonia Kreidenweis and Jeff Collett |
(?) |
Results presented in part at BRAVO meeting in August 2000 and on conference call on 12/7/00. |
Estimate the hygroscopicity of aerosol species at Big Bend |
Bill Malm, Derek Day, Sonia Kreidenweis, and Jenny Hand |
Completed (?) |
Paper at A&WMA/AGU visibility conference, October 2001. |
Description of physical, chemical, and optical properties of fine and coarse particles at Big Bend |
Bill Malm, Derek Day, Sonia Kreidenweis, Taehyoung Lee, and Jeff Collett |
Completed (?) |
Paper at A&WMA/AGU visibility conference, October 2001. |
Description of methods, performance, and results of perfluorocarbon tracer release and monitoring. |
Marc Pitchford, Mark Green, Hampden Kuhns, Vic Etyemezian, Russell Dietz, and Tom Watson |
Overview completed. |
Paper at A&WMA/AGU visibility conference, October 2001. |
Preliminary analysis of perfluorocarbon tracer measurements |
Warren White, Russell Dietz, Mark Green, Marc Pitchford, and Thomas Watson |
(?) |
Paper at A&WMA/AGU visibility conference, October 2001. |
Modeling Analyses |
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Evaluate back trajectory methods and input wind fields |
Kristi Gebhart |
(?) |
Partial results in paper at A&WMA/AGU visibility conference, October 2001. |
Empirical Orthogonal Function analysis of spatial and temporal patterns |
Kristi Gebhart |
October 2001 |
Paper at A&WMA/AGU visibility conference, October 2001. |
Back trajectory regression method to estimate average source contributions to Big Bend |
Kristi Gebhart |
(?) |
Contribution to BRAVO final report, 2002. (?) |
HYSPLIT trajectories and influence functions for tracer source locations |
Mark Green |
Completed |
Presented on BRAVO conference call 11/16/00. |
TAGIT receptor modeling applied to tracer and sulfur data |
Hampden Kuhns, Marc Pitchford, and Mark Green |
Fall 2001 |
Presentation to steering committee. |
Assemble modeling emissions inventory for states surrounding Big Bend in both the U.S. and Mexico |
Hampden Kuhns |
Database complete. Report: September 2001 |
Paper at A&WMA/AGU visibility conference, October 2001. |
SCICHEM simulations to estimate power plant emissions contribution to sulfate at Big Bend |
Naresh Kumar |
October 2001 |
Paper at A&WMA/AGU visibility conference, October 2001. |
Backward air mass history analyses based on residence time |
Bret Schichtel and Kristi Gebhart |
December 2001 |
Presented at BRAVO meeting in March 2001. |
Forward air mass history analyses |
Bret Schichtel and Kristi Gebhart |
March 2002 |
Presentation at BRAVO meeting, September 2001. |
Visualization of air mass transport |
Bret Schichtel |
December 2001 |
Presented at BRAVO meeting in March 2001. |
Evaluation of Monte Carlo transport model and air mass history analysis techniques |
Bret Schichtel |
December 2001 |
Presented at BRAVO meeting in March 2001. |
MM5 meteorological modeling. 36km and 12 km grid for entire study period. Also 4km grid for 8-17 October and 15-25 August 1999 episodes. |
Nelson Seaman |
10/99 episode: Completed |
Provide files to modelers as needed. Report (?) |
Models-3/CMAQ simulations of 8-17 October and 15-25 August 1999 episodes |
Christian Seigneur |
10/99 episode: October 2001 |
Paper on tracer simulation at A&WMA/AGU visibility conference, October 2001. |