||Aggregation Using Cluster Analyses for Models-3 CMAQ Applications.
LeDuc, S. ;
Eder, B. ;
Dennis, R. ;
Cohn, R. ;
||National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;Analytical Sciences, Inc., Durham, NC.;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Air pollution monitoring ;
Cluster analysis ;
Air quality data ;
Atmospheric composition ;
Ecological concentration ;
Meteorological data ;
Seasonal variations ;
Spatial resolution ;
Statistical analysis ;
RDAM(Regional Acid Deposition Model) ;
CMAQ(Community Multiscale Air Quality) ;
Cummunity Multiscale Air Quality Model ;
Models-e modeling system
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Models-3, a framework for air quality modeling, is scheduled for public release in June 1998. The framework will support statistical analysis and presently uses four SAS(R) modules (base, graph, AF and FSP) in the emissions processing. Statistics such as mean median, and percentiles can be plotted from Models-3 with IBM's Visualization Data Explorer. The statistical tool described in this paper is for policy planning for air quality issues related to annual or multi-year measures, rather than the most extreme events.
||Prepared in cooperation with Analytical Sciences, Inc., Durham, NC. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
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||PC A02/MF A01