Record Display for the EPA National Library Catalog
RECORD NUMBER: 22 OF 23| Main Title | Statistical Method for Detection of a Trend in Atmospheric Sulfate. | |||||||||||
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| Author | Shreffler, J. H. ; Barnes, H. M. ; | |||||||||||
| CORP Author | Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. | |||||||||||
| Publisher | 1995 | |||||||||||
| Year Published | 1995 | |||||||||||
| Report Number | EPA/600/A-95/026; | |||||||||||
| Stock Number | PB95-174686 | |||||||||||
| Additional Subjects | Sulfates ; Ozone ; Air pollution ; Statistical analysis ; Sulfur dioxide ; Concentration(Composition) ; Regression analysis ; Acid rain ; Seasonal variations ; Photochemical reactions ; Meteorology ; Computerized simulation ; Atmospheric chemistry ; Sampling ; Point sources ; Bias ; Particulates ; EMEFS(Eulerian Model Evaluation Field Study) ; RADM(Regional Acid Deposition Model) ; Acid Models Operational and Diagnostic Evaluation Study ; Acid MODES ; Clean Air Act Amendments | |||||||||||
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| Collation | 16p | |||||||||||
| Abstract | Daily atmospheric concentrations of sulfate collected in northeastern Pennsylvania are regressed against meteorological factors, ozone, and time in order to determine if a significant trend in sulfate can be detected. The data used in the analysis were collected during the Sulfate Regional Experiment (SURE, 1977-1978) and the Acid Model Operational Diagnostic Evaluation Study (Acid MODES, 1988-1989). The steps in building a multiple linear regression model for sulfate are discussed. Ozone and seasonal terms (reflecting the potential of the atmosphere for oxidation of sulfur dioxide) emerge as important explanatory factors. |