Sensitivity of acid production/deposition to emission reductions

The sensitivity of sulfate and nitrate deposition during a spring storm in the eastern United States to changes in SO x and NO x emissions is evaluated by performing simulations with the STEM-II acid deposition model. The proportionality between emission reductions and deposition is found to vary from the dry and wet processes. Dry deposition of sulfate and nitrate is proportional to SO x and NO x emissions, respectively. Liquid-phase production of sulfate is nonproportional to SO x and NO x emissions