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THE IMPACT OF WINTER NH3 EMISSION REDUCTIONS ON INORGANIC PARTICULATE MATTER UNDER PRESENT AND FUTURE REGULATED CONDITIONS
Citation:
PINDER, R., A. GILLILAND, AND R. L. DENNIS. THE IMPACT OF WINTER NH3 EMISSION REDUCTIONS ON INORGANIC PARTICULATE MATTER UNDER PRESENT AND FUTURE REGULATED CONDITIONS. Presented at Workshop on Agricultural Air Quality: State of the Science, Potomac, MD, June 05 - 08, 2006.
Impact/Purpose:
The objective of this task is to thoroughly characterize the performance of the emissions, meteorological and chemical/transport modeling components of the Models-3 system, with an emphasis on the chemical/transport model, CMAQ. Emissions-based models are composed of highly complex scientific hypotheses concerning natural processes that can be evaluated through comparison with observations, but not truly validated. Static and Dynamic Operational, Diagnostic, and ultimately Probablistic evaluation methods are needed to both establish credibility and build confidence within the client and scientific community in the simulations results for policy and scientific applications. The characterization of the performance of Models-3/CMAQ is also a tool for the model developers to identify aspects of the modeling system that require further improvement.
Description:
Recent regulation by the US Environmental Protection Agency requires large-scale emission reductions of NOx and SO2. This study estimates the impact of these changes on the sensitivity of PM2.5 to NH3 emission reductions and the reduced-form nitrogen deposition burden.