This figures presented are very helpful in explaining the unusually high ozone concentrations in southern New Hengland on the 21st. See http://www.nescaum.org/map_archive/1995/950821.gif. I've heard of hurricanes causing clear skies and subsidence inversions on the outskirts of the system (as air is drawn into the hurricane). Perhaps this is what happened on the 21st. We saw a similar "freak ozone day" this year on the 24th of August (Bonnie). I also noticed (on the Monte Carlo simulations for 8/21/95 for E. Hartford) that the winds shifted radically early in the morning on the 21st. I wonder if this means that the 21st (a 1-day event, I suppose) is the result of local/sub-regional processes, or whether the wind was strong enough to be transporting pollutants of long distances. I would have guessed the former, but looking at some trajectories for Long Island and Newport, it seems not. Since I don't have anywhere to post these trajectories at the moment, I'll email them to the authors.
