SEMAP Interstate Transport Project: Status, 2011 Results and Schedule Talat Odman (GT) and Yongtao Hu (GT) SEMAP Air Quality Modeling Workgroup Call March 16, 2016
Outline • Status update • Benchmarking • 2011 Performance • Schedule for 2017 simulations 2
Status • Completed 2011 simulations – CAMx & CMAQ – Both on US12 and LADCO12 domains • Benchmarked CAMx – Against EPA results for 2 periods – Step by step deviation from EPA config. • Compared CMAQ to CAMx 3
Status (Cont’d) • Completed • Started 2017 performance simulations on US12 evaluations – CAMx: • Q1 run at 50% – Tables of statistics • Q234 run at 40% – Bubble plots of MNB – CMAQ: and MNE • Q1Q2 run at 20% • Corrected 2017 • Q3Q4 run at 5% EGU emissions – AL, GA, KY, NC, SC, TN, WV 4
Benchmarking Repeat of March 22 - April 5, 2011 period with EPA configuration: • O3 difference • EC difference Difference from EPA for the March 22-31 period: Ozone: • Total difference • Difference due to photolysis • Difference due to meteorology • Difference due to code change EC: • Total difference • Difference due to photolysis • Difference due to meteorology • Difference due to code change Repeat of April 21-30, 2011 period with EPA configuration: • Ozone difference • EC difference 5
Benchmarking (Cont’d) Model Differences • CAMx US12 vs. LADCO12 • CMAQ US12 vs. LADCO12 • CAMx vs. CMAQ 6
Performance Evaluation Model Performances Bubble plots of monthly average MNB and MNE in daily 8-hr max. ozone • CAMx – MNB – MNE • CMAQ – MNB – MNE Tables of statistics • CAMx • CMAQ 7
May 2011 CAMx CMAQ 8
June 2011 CAMx CMAQ 9
July 2011 CAMx CMAQ 10
August 2011 CAMx CMAQ 11
September 2011 CAMx CMAQ 12
2017 “Sensitivity” Simulations • 7-month ozone season on LADCO12 • Exclude Canada/Mexico, offshore and fire emissions from anthropogenics • CAMx APCA source apportionment – Tag point EGUs in each SEMAP state (10) – Tag all other anthropogenic in each state • Zero-out of following emissions with CMAQ: – Elevated EGU NOx emissions in each state – All anthropogenic NOx in each state 13
Schedule for 2017 Sensitivities Machine April May June Previous CAMx-APCA (2017 & sources 1-20) New 1 CMAQ (2017 & sensitivities 1-3) New 2 CMAQ (sensitivities 4-7) New 3 CMAQ (sensitivities 8-11) New 4 CMAQ (sensitivities 12-15) 14
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