Looking at Ammonia in ACE-1 Data. Sara Lance. Aerosol Characterization Experiments (ACE). Goal of ACE is “to provide the necessary data to incorporate aerosol particles into global climate models and to reduce the overall uncertainty in calculating the climatic effect of aerosols” ACE-1
NH about? 3(g)
The higher aerosol SO4= concentration, the more NH3(g) is absorbed by a cloud droplet (in order to regulate the pH), thereby causing a sink of gas phase ammonia.
NH3(aq) + H2O(aq) NH4+(aq) + OH-(aq)
HSO4-(aq) H+(aq) + SO42=
Assumption: Chemical Equilibrium
Valid when ambient conditions change slowly compared to chemical changes within the aerosol droplet.