Estimating the effect of emissions strategies on wet deposition of sulfates

Abstract The computer model RADM (Regional Acid Deposition Model) has been developed to study the effect of emissions reduction strategies on acid deposition. By running RADM on past meteorology under both present and proposed emissions, it is possible to assess the impact of a change in emissions on acid deposition. Combining these computer simulations with daily monitoring data available at select locations allows for much more precise and possibly much less biased estimation of the effect of the change of emissions on wet deposition than just using the computer simulations. This paper investigates changes in wet sulfate deposition, although the same procedures can be applied to any other component of precipitation computed by RADM and measured at least daily at a monitoring site.