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Title: Climatological and regional analyses of CASTNet air concentration data

Abstract

The climatological- and regional-scale variability of ambient air concentrations of SO{sub 2}, SO{sub 4}, HNO{sub 3}, NO{sub 3}, NH{sub 4} and O{sub 3} is examined using rotated principal component analysis. This analysis allows the assignment of stations associated with the Clean Air Status and Trends Network (CASTNet) to influence regimes or subregions whose concentrations exhibit statistically unique, homogeneous characteristics. Depending on the species, either two, three, or four subregions were identified by the analysis. An examination of the climatological-scale variability of these homogeneous subregions was then performed using time series analysis techniques including spectral density analysis, which revealed periodicities ranging from weeks to years as well as several possible trends.

Authors:
;
Publication Date:
Research Org.:
Environmental Protection Agency, National Exposure Research Lab., Research Triangle Park, NC (United States); National Oceanic and Atmospheric Administration, Atmospheric Sciences Modeling Div., Research Triangle Park, NC (United States)
OSTI Identifier:
676130
Report Number(s):
PB-99-102170/XAB; EPA-600/A-98/118
TRN: 83131663
Resource Type:
Technical Report
Resource Relation:
Other Information: DN: See also PB95-234506.; PBD: 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION MONITORING; REGIONAL ANALYSIS; DATA ANALYSIS; ECOLOGICAL CONCENTRATION; SULFUR DIOXIDE; SULFATES; OZONE; NITRATES; NITRIC ACID; INFORMATION SYSTEMS

Citation Formats

Eder, B.K., and Sickles, J.E. Climatological and regional analyses of CASTNet air concentration data. United States: N. p., 1998. Web.
Eder, B.K., & Sickles, J.E. Climatological and regional analyses of CASTNet air concentration data. United States.
Eder, B.K., and Sickles, J.E. Sun . "Climatological and regional analyses of CASTNet air concentration data". United States.
@article{osti_676130,
title = {Climatological and regional analyses of CASTNet air concentration data},
author = {Eder, B.K. and Sickles, J.E.},
abstractNote = {The climatological- and regional-scale variability of ambient air concentrations of SO{sub 2}, SO{sub 4}, HNO{sub 3}, NO{sub 3}, NH{sub 4} and O{sub 3} is examined using rotated principal component analysis. This analysis allows the assignment of stations associated with the Clean Air Status and Trends Network (CASTNet) to influence regimes or subregions whose concentrations exhibit statistically unique, homogeneous characteristics. Depending on the species, either two, three, or four subregions were identified by the analysis. An examination of the climatological-scale variability of these homogeneous subregions was then performed using time series analysis techniques including spectral density analysis, which revealed periodicities ranging from weeks to years as well as several possible trends.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {11}
}

Technical Report:
Other availability
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