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Air Quality Modeling of PM2.5 Species

Air Quality Modeling of PM2.5 Species. Kirk Baker Lake Michigan Air Directors Consortium & Midwest RPO 10/21/2002. O bjectives. Compare photochemical model estimates to observed estimates Compare relative differences in estimates by each of the photochemical models

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Air Quality Modeling of PM2.5 Species

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  1. Air Quality Modeling of PM2.5 Species Kirk Baker Lake Michigan Air Directors Consortium & Midwest RPO 10/21/2002

  2. O bjectives • Compare photochemical model estimates to observed estimates • Compare relative differences in estimates by each of the photochemical models • Determine relative costs for running each model in terms of file storage size, execution speed, and staff time required for implementation

  3. August 2 - Sept 12, 1999 8-hr ozone episode: Sept 1-5 March Midwest daily PM speciation data at 5 sites Jan 2 - Feb 17, 2000 8-hr ozone episode: None March Midwest daily PM speciation data at 3 sites June 18 - Aug 13, 2001 8-hr ozone episodes: June 25-30, July 15-24, Aug 5-9 PM Super-Site intensive modeling @ St. Louis and Pittsburgh CMAQ June 2002 release CAMx version 3.10 mechanism 4 (beta) REMSAD version 7.03 Near-Future PMCAMx (beta) EPISODES MODELS

  4. Lambert projection: (-97,40) 33,45 MM5 36km grid: 165 X 129 Y 35 Z PCM 36km grid: 87 X 95 Y 16 Z Computing Platform: RedHat Linux 7.X, PGI fortran

  5. MM5 version 3.5

  6. EMS 2001 Emissions Modeling • Point source inventory based on NEI 1999 • Biogenics based on BIOME3/BEIS3 with BELD3 landuse and MM5 15 m temperatures and MM5 PAR • Area, on-road mobile, non-road mobile based on 1999 NEI

  7. Speciation for ModelsFull CB4 = CMAQ, CAMx-M4, PMCAMx Micro-CB4 = REMSADv7

  8. Model Performance • March Midwest (red) • daily 24 hr samples • Only 3 of 6 stations operating during winter 2000 episode • IMPROVE (blue) • 24 hr samples every 3 days • CASTnet Visibility (green) • 24 hr samples every 3 days

  9. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 NO3

  10. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 SO4

  11. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 NH4

  12. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 HNO3

  13. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 HONO

  14. CMAQ REMSAD CAMxM4(beta)

  15. CMAQ REMSAD CAMxM4(beta)

  16. August 1999 (9th to 30th) CMAQ(june02) CAMx-M4(beta) REMSADv7.03 CM

  17. Aerosol Diameter (microns)

  18. Aerosol Density (g/cm3)

  19. Eastern US Grid (87x95x16)Resources for Annual Run

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