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Air Trends

2003 Air Trends Report - Frequently Requested Tables

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Download all tables: Appendix A (PDF) (115pp, 4.5 MB)

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Table
Description
  Chapter 2 - Criteria Pollutants — National Trends
2-1 NAAQS in Effect as of December 2002
2-2 Milestones in Motor Vehicle Emissions Control
2-3 Trends in TNMOC, NOx, and Selected VOC Species
2-4 Summary of 1991–2001 Trends in Ozone Design Values and 1995-2001 Trends in Summer Weekday Morning Ozone Precursor Trends in Atlanta and Chicago
2-5 Biogenic Sources of VOC Emissions by Region
  Chapter 3 - Criteria Pollutants — Metropolitan Area Trends
3-1 Summary of MSA Trend Analyses by Pollutant, 1990–1999
3-2 AQI Categories,Colors, and Ranges
  Chapter 4 - Criteria Pollutants — Nonattainment Areas
4-1 Areas Redesignated to Attainment from September 2001 to September 2002
  Chapter 6 - Special Studies Summary
6-1 Estimated PM2.5 Concentrations Attributable to Asian Dust Cloud
  Special Studies -- Impact of April 2001 Asian Dust Event on Particulate Matter Concentrations in the United States
Table 1 Summary of Asian Dust Contribution by Date
Special Studies -- Chemical Speciation of PM2.5 in Urban and Rural Areas
Table 1 Quarter Definitions
Table 2 Organic Carbon (OC) Blank Correction Factors
Table 3 STN and IMPROVE Site Particulars
Table 4 Minimum, Maximum, and Average Urban Excess in µg/m3 for 13 STN/IMPROVE Combinations
Special Studies -- Trends in Monitored Concentrations of Carbon Monoxide
Table 1 Carbon Monoxide Monitoring Sites Where at Least One Statistical Test Shows Increasing Concentration
Special Studies -- Cumulative Ozone Exceedances — A Measure of Current Year Ozone Levels Compared to Historical Trends
Table 1 Monitoring Sites for USA Today Cities
Table 2 Regional Groupings of USA Today Cities
Appendices
A-1a National Air Quality Trends Statistics for Criteria Pollutants, 1991–2000
A-1b National Air Quality Trends Statistics for Criteria Pollutants, 1991–2000
A-2 National Carbon Monoxide Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-3 National Lead Emissions Estimates, 1980, 1985, 1989–2000 (short tons)
A-4 National Nitrogen Oxides Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-5 National Volatile Organic Compounds Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-6 National PM10 Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-7 Miscellaneous and Natural PM10 Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-8 National PM2.5 Emissions Estimates, 1990–2000 (thousand short tons)
A-9 National Sulfur Dioxide Emissions Estimates, 1980, 1985, 1989–2000 (thousand short tons)
A-10 National Ammonia Emissions Estimates, 1990–2000 (thousand short tons)
A-11 National Long-Term Air Quality Trends, 1981–2000
A-12 National Air Quality Trends by Monitoring Location, 1981–2000
A-13 National Air Quality Trends Statistics by EPA Region, 1981–1990
A-14 Maximum Air Quality Concentrations by County, 2000
A-15 Maximum Air Quality Concentrations by Metropolitan Statistical Area, 2000
A-16 Metropolitan Statistical Area Air Quality Trends, 1993–2002
A-17 Number of Days with AQI Values Greater Than 100 at Trend Sites, 1993–2002, and All Sites in 2002
A-18 Number of Days with Air Quality Index Values Greater Than 100 at Trend Sites, 1993–2002, and All Sites in 2002, Ozone Only
A-19 Condensed Nonattainment Areas List (a)
A-20 Trend in 8-hr ozone concentrations (ppm) exceedances at National Park and National Monument sites, 1991–2000
A-21 Onroad and Nonroad Emissions of 21 Mobile Source Air Toxics, 1996
B-1 Number of Ambient Monitors with Valid Annual Summary Statistics

a. This is a simplified listing of Classified Nonattainment areas. Unclassified and Section 185(A) nonattainment areas are not included. In certain cases, footnotes are used to clarify the areas involved. For example, the lead Readers interested in more detailed information should use the official Federal Register Citation (40CFR81).

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