Regional Acid Deposition: Design and Management Plan for a Comprehensive Modeling System

This report presents a design and management plan for the development of a state-of-the-art Eulerian model for the study of regional acid deposition. This plan directly addresses the findings of our companion report Regional Acid Deposition: Models and Physical Processes (NCAR, 1983). Our plan integrates recent advances in mesoscale meteorology, tropospheric chemistry, and advanced computing into a scientifically defensible, state-of-the-art regional acid deposition modeling system. The proposed use of an established, proven, mesoscale meteorological model can significantly improve our understanding of the role of transport in acid deposition. The inclusion of fundamental chemical process equations will make it possible to test our understanding of the fundamental transformation processes via comparison with observed data. The focus on statistical and uncertainty analysis will aid the interpretation of modeling results, and hence facilitate the proper assessment of the source-receptor relationship. The modularity of the proposed model system allows the easy and timely incorporation of new results of research sponsored by EPA or other agencies.