Slide 25 of 31
Notes:
A similar West to East progression can be observed in fine particle (< 2.5 microns) mass and sulfate measurements provided by Jeff Brook of Environment Canada, AES.
Note that the highest fine particle mass concentrations are in excess of 50 micrograms per cubic meter - a level recently proposed by the US EPA as a new 24-hour National Ambient Air Quality Standard for Fine Particle Mass Concentration.
Note also that half or more of the fine mass concentrations are typically composed of sulfate during peak days of this episode.
At this point, we appear to have a relatively clear-cut example of a classic ozone and sulfate transport event from the Midwestern US.
Note however, that fine mass and sulfate levels peak at the most easterly Kejimkujik, Nova Scotia site on August 25 and 26. Keji fine mass concentrations drop considerably on August 27 - the day when ozone peaked at the (not-so-far-away) Jonesport Maine site.
