Factors Controlling PM and Ozone Over the Southeast US as Emissions Decrease: Insights from the NASA SEAC~4RS Campaign

摘要

1. Ammonia emissions has no long-term trend, is in excess of sulfate (NADP network) 2. Yet sulfate aerosol is not neutralized, and ammonium is decreasing 3. SEAC~4RS data suggest anticorrelation of aerosol acidity and organic content; kinetic limitation to equilibrium?