Understanding Ozone Formation

1
Understanding Ozone Formation Transport in the
Western US

• Monitoring Issues
• Sparse data
• Lack of VOC/NOX/CO data upwind downwind areas
• NO2 measurement issues
• Lack of upper air met datamore profiler
  datamin-sodars in complex terrain
• Application of new instrumental methods
• neighborhood air quality packages (O3, NOx, CO,
  PM)
• Proton Transfer Reaction Mass Spec
  (PTR-MS)real-time VOC
• Aerosol Mass Specspeciated real-time PM
• Open, long path DOAS, FTIRreal time,
  cell-integrated gas speciessome VOCs inclduing
  oxygenated VOCs
• Urban eddy covariance flux methodsVOC, NOX, CO,
  PM, O3

2

• Modeling Issues
• Better model evaluation using more than O3
• Why do models underestimate peak O3?
• Separate met, emissions, chem effects (process
  analysis studies)
• Emission inventory evaluations
• Met model evaluations for light wind situations
  in complex terrain
• Effect of grid size in complex terrain
• Grid convergence tests
• Better use of obs nudgingterrain effects
• Mixed layer height modeling in complex terrain
• Value of ensemble modelingprobability outputs,
  documented range of uncertainties
• How to choose ensemble membersmet, emissions,
  chem
• How to use ensemble results?
• Long range transport of O3, precursors
  productsimpact of Asian emissions, impact of
  fire upwind urban areas