1. Simulation of primary and secondary (biogenic and anthropogenic) organic aerosols over the United States by US EPA Models-3/CMAQ: Evaluation and regional analysis
Shaocai Yu*, Robin Dennis*++, Brian Eder*++, Charles Lewis**,
Francis Binkowski*++, Gerald Gipson**, Prakash Bhave*++, Jonathan Pleim*++, Kenneth Schere*++, George Klouda***, George Pouliot*++
*Atmospheric Sciences Modeling Division
** Human Exposure and Atmospheric Sciences Division
NERL, U.S. EPA, RTP, NC
***Atmospheric Chemistry Group
National Institute of Standards and Technology
Gaithersburg, Maryland 20899
++ On assignment from Air Resources Laboratory, NOAA

2. Introduction

3. CMAQ Community Multiscale Air Quality Model
Community Model
Multiscale
consistent model structures for interaction of urban through Continental scales
Multi-pollutant
ozone, speciated particulate matter, visibility, acid deposition
and air toxics

4. 184 (old)

6. Our results close to
Odum/Griff and CMU/STI

7. Results At Nashville site
Pun et al. (EST, 2003)
Odum/Griffin et al
and CMU/STI: smog chamber data
AEC: explicit gas-phase mechanism

9. Results 3. SEARCH (TOR), ASACA (TOT)

10. Normalized Mean Bias (NMB)EC OC TC
SOA
Primary OC
Normalized Mean Bias (NMB)

11. Results
Spatial distribtution of averages

12. Results Terpene emision (Biogenic OC precursor)
Primary EC, OC emission

13. Results Emissions of precursors for anthropogenic SOA

14. (CMAQ model results)

15. Contacts:
Brian K. Eder