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What Caused Racial Disparities in Particulate Exposure to Fall? New Evidence from the Clean Air Act and Satellite-Based Measures of Air Quality

Author

Listed:
  • Janet Currie
  • John Voorheis
  • Reed Walker

Abstract

Racial differences in exposure to ambient air pollution have declined significantly in the United States over the past 20 years. This project links restricted-access Census Bureau microdata to newly available, spatially continuous high resolution measures of ambient particulate pollution (PM2.5) to examine the underlying causes and consequences of differences in black-white pollution exposures. We begin by decomposing differences in pollution exposure into components explained by observable population characteristics (e.g., income) versus those that remain unexplained. We then use quantile regression methods to show that a significant portion of the “unexplained” convergence in black-white pollution exposure can be attributed to differential impacts of the Clean Air Act (CAA) in non-Hispanic African American and non-Hispanic white communities. Areas with larger black populations saw greater CAA-related declines in PM2.5 exposure. We show that the CAA has been the single largest contributor to racial convergence in PM2.5 pollution exposure in the U.S. since 2000 accounting for over 60 percent of the reduction.

Suggested Citation

  • Janet Currie & John Voorheis & Reed Walker, 2020. "What Caused Racial Disparities in Particulate Exposure to Fall? New Evidence from the Clean Air Act and Satellite-Based Measures of Air Quality," Working Papers 20-02, Center for Economic Studies, U.S. Census Bureau.
    • Handle: RePEc:cen:wpaper:20-02
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    File URL: https://www2.census.gov/ces/wp/2020/CES-WP-20-02.pdf
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    References listed on IDEAS

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    More about this item

    JEL classification:

    • H4 - Public Economics - - Publicly Provided Goods
    • I14 - Health, Education, and Welfare - - Health - - - Health and Inequality
    • J18 - Labor and Demographic Economics - - Demographic Economics - - - Public Policy
    • Q5 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics
    • Q53 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling

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