Specialties: State implementation plan requirements, emissions modeling / processing (MOVES, EMFAC, SMOKE), emissions sector specialization(onroad, nonroad/offroad, ocean going vessels, area, and point sources), air quality modeling (CMAQ, AERMOD), data processing (MYSQL, FORTRAN, NCL, PERL, Python), data visualization (ArcGIS), and operating system support (Windows, MAC OS, and Linux).Presentations:“PM2.5 Modeling Challenges, An Unheralded Project Stopper for Large Refineries,” AFPM 2017 Environmental Conference, Denver, CO -Air Permitting/NSR/NAAQS Session, Oral Presentation, October 2017“Modeled Impacts of Wood Burning Controls on 24-hour PM2.5 Attainment in Fairbanks, Alaska,” 16th Annual CMAS Conference Chapel Hill, NC – Regulatory Modeling and SIP Applications Session – Oral Presentation, – October 2017Publications:Mark Hixson, Anna Henolson “PM2.5 Modeling Challenges, An Unheralded Project Stopper for Large Refineries” AFPM – 2017 Environmental Conference – Denver, CO – Technical Paper Hixson M., Mahmud A., Hu J., Kleeman M.J. “Resolving the Interactions Between Population Density and Air Pollution Emissions Controls in the San Joaquin Valley, USA,” Journal of the Air & Waste Management Association, Volume 62, Issue 5, pp. 566–575. 2012.Kleeman M.J., Zapata C., Stilley J., Hixson M. “PM2.5 Co-Benefits of Climate Change Legislation, Part 2: California Governor’s Executive Order S-3-05 Applied to the Transportation Sector.” Climatic ChangeMahmud A., Hixson M., Kleeman M.J. “Quantifying Population Exposure to Airborne Particulate Matter During Extreme Events in California Due to Climate Change,” Atmospheric Chemistry and Physics Discussion, 12, pp. 5881–5901 doi:10.5194/acpd-12-5881-2012Hixson M, Mahmud A, Hu J, Bai S, Niemeier D, Handy S.L., Gao S, Lund J.R., Sullivan D.C., Kleeman M.J. “Influence of Regional Development Policies and Clean Technology Adoption on Future Air Pollution Exposure,” Atmospheric Environment, Volume 44, Issue 4, pp. 552–562. February 2010