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Brief evaluation of REMAD and CMAQ for east Texas tracers

Brief evaluation of REMAD and CMAQ for east Texas tracers. Mark Green, DRI Model results from Christian Seigneur and Betty Pun- AER (CMAQ and REMSAD), and Mike Barna- CIRA (REMSAD). Methodology.

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Brief evaluation of REMAD and CMAQ for east Texas tracers

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  1. Brief evaluation of REMAD and CMAQ for east Texas tracers Mark Green, DRI Model results from Christian Seigneur and Betty Pun- AER (CMAQ and REMSAD), and Mike Barna- CIRA (REMSAD)

  2. Methodology • Evaluation used 6-hour tracer data and model predictions for two 10-day periods where tracer data was sequestered: August 15-25, 1999; October 5-15, 1999

  3. BRAVO Study Tracer Release & Monitoring Locations

  4. CMAQ CMAQ

  5. Northeast Texas tracer and Observed S Northeast Texas tracer August- Particulate S and observed iPPCH Observed S

  6. August- CMAQ and observed iPPCH 12km CMAQ and 36km REMSAD NE Texas tracer obs/preds time series for sequestered period Look at CMAQ first… Obs Preds

  7. August- REMSAD and observed iPPCH 12km CMAQ and 36km REMSAD NE Texas tracer obs/preds time series for sequestered period Now REMSAD… Obs Preds

  8. Tracer Release from Big Brown, 22-Aug-1999 00:00 GMT CMAQ-12km REMSAD-36km

  9. Obs CMAQ 36 km

  10. From AER

  11. Model performance summary statistics –Northeast Texas tracer, August episode

  12. Model performance summary statistics – Eagle Pass tracer, August episode

  13. Houston tracer and observed S Houston tracer October- Particulate S and observed PTCH Observed S

  14. October- CMAQ and observed PTCH 12km CMAQ and 36km REMSAD Houston tracer obs/preds time series for sequestered period Look at CMAQ first… Obs Preds

  15. 12km CMAQ and 36km REMSAD Houston tracer obs/preds time series for sequestered period October- REMSAD and observed PTCH Now REMSAD… Obs Preds

  16. CMAQ 12 and 4 km simulation PTCH (Houston Tracer) October 12 6-hour average starting 19 GMT 22 GMT

  17. REMSAD PTCH REMSAD vs. CMAQ 36 km vs. 12 km PTCH (Houston Tracer) October 12 36 km 12 km

  18. Obs CMAQ 36 km

  19. From AER

  20. AER summary of CMAQ tracer transport • In the 36 km simulations, tracer plumes still miss monitoring sites at and near Big Bend on some days • In both the 36 and 4 km simulations for August, the PPCH plumes are too far East • In both the 36 and 4 km simulations for October, the PTCH plumes are too far South • 36 km simulations bring plume a lot closer to Big Bend than 4 km simulations

  21. Model performance summary statistics –northeast Texas tracer, August episode

  22. Model performance summary statistics – Eagle Pass tracer, October episode

  23. SO4 at K-BAR, July-October 1999

  24. Total Sulfur at K-BAR, July-October 1999

  25. From AER

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