CRGAQS CAMx PSAT Results Presentation to the Gorge

Today’s Presentation • Recap recommendations from last call • Describe latest CAMx simulation –

Recap • Recommendations from last call: – Focus on August episode • • Run

PM Source Apportionment Technology • What is PSAT? – Emissions of PM and gas

PM Source Apportionment Technology – Tracers are run for species groups: • Sulfur (SO

PSAT for August 2004 Base Case • Quantify source attribution at Mt Zion and

PSAT for August 2004 Base Case V: corporatemarketingoverview. ppt

PSAT for August 2004 Base Case • Source categories: – – – – –

PSAT for August 2004 Base Case • 6 x 10 category/region matrix + IC/BC

PSAT for August 2004 Base Case • PSAT results were post-processed for two monitoring

Next Steps • Continue with 2018 Future Year scenario – August 2004 episode only

Slides: 31

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CRGAQS: CAMx PSAT Results Presentation to the Gorge Study Technical Team By ENVIRON International Corporation January 10, 2007 V: corporatemarketingoverview. ppt

Today’s Presentation • Recap recommendations from last call • Describe latest CAMx simulation – Use of PSAT on the August 2004 Base Year scenario • Next Steps V: corporatemarketingoverview. ppt

Recap • Recommendations from last call: – Focus on August episode • • Run 2018 Case Run PSAT for 2004 Run 5 “What-if” scenarios for 2018 Use model trends in relative sense to scale IMPROVE observations – Relegate November episode • Revisit with possible follow-on funding? V: corporatemarketingoverview. ppt

PM Source Apportionment Technology • What is PSAT? – Emissions of PM and gas precursors are stratified by source category and by source region – Tracers are used to tag emissions from each category-region pair and to track their transport, chemical evolution, and fate V: corporatemarketingoverview. ppt

PM Source Apportionment Technology – Tracers are run for species groups: • Sulfur (SO 2 and PSO 4) • Nitrogen (NOx, NOy, nitric acid, ammonia, PNO 3, and PNH 4) • Organics (VOC, condensable hydrocarbon products, and SOA components) • Primary PM (carbonaceous, fine/coarse dust, and fine/coarse other PM) V: corporatemarketingoverview. ppt

PSAT for August 2004 Base Case • Quantify source attribution at Mt Zion and • Wishram 12 source categories by 6 source regions – 10 source categories + IC + BC – Region 6 handles all emissions outside the 4 -km grid • Sulfur, nitrogen, and primary PM groups • Organics: let core model report biogenic vs. anthropogenic apportionment V: corporatemarketingoverview. ppt

PSAT for August 2004 Base Case V: corporatemarketingoverview. ppt

PSAT for August 2004 Base Case • Source categories: – – – – – V: corporatemarketingoverview. ppt On-road mobile sources Non-road mobile sources Ammonia sources Other area sources Electric generating units (EGU) Pulp mills Wildfires Other point sources All emissions outside the 4 -km grid

PSAT for August 2004 Base Case • 6 x 10 category/region matrix + IC/BC = 62 • unique tracers Sulfur (2 species), Nitrogen (7 species), primary PM (6 species) for each tracer – Total = 930 total tracers in PSAT • To “fit” the model into memory: – Run only the 4 - and 12 -km grids • 36 -km grid results used to extract 12 -km BC’s – 10 -day spin-up was not run for PSAT • 12 -km 3 -D concentration fields on August 10 used as IC’s V: corporatemarketingoverview. ppt

PSAT for August 2004 Base Case • PSAT results were post-processed for two monitoring sites along the Columbia River: – Mt Zion, and Wishram – Report results for the episode-average source apportionment (August 10 -22) – Tables presented for “top” ranked emission category-region pairings • Represent 90%+ mass concentrations for each species V: corporatemarketingoverview. ppt

V: corporatemarketingoverview. ppt

Next Steps • Continue with 2018 Future Year scenario – August 2004 episode only • Continue with 5 “what-if” scenarios • Determine 2004 -2018 visibility trend • V: corporatemarketingoverview. ppt lines Document in project report