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Climate Change, Ambient Ozone, and Health in 50 U.S. Cities

TitleClimate Change, Ambient Ozone, and Health in 50 U.S. Cities
Publication TypeJournal Article
Year of Publication2007
AuthorsBell, M. L., R. Goldberg, C. Hogrefe, P. L. Kinney, K. Knowlton, B. Lynn, J. Rosenthal, C. Rosenzweig, and J. A. Patz
JournalClimatic Change
Volume82
Issue1-2
Pagination61-76
Date PublishedMAY 2007
ISBN Number0165-0009
KeywordsAIR-QUALITY STANDARDS, HOSPITAL ADMISSIONS, METAANALYSIS, model, MORTALITY, POLLUTION, temperature, TIME-SERIES, united-states, VECTOR-BORNE DISEASE
Abstract

We investigated how climate change could affect ambient ozone concentrations and the subsequent human health impacts. Hourly concentrations were estimated for 50 eastern US cities for five representative summers each in the 1990s and 2050s, reflecting current and projected future climates, respectively. Estimates of future concentrations were based on the IPCC A2 scenario using global climate, regional climate, and regional air quality models. This work does not explore the effects of future changes in anthropogenic emissions, but isolates the impact of altered climate on ozone and health. The cities' ozone levels are estimated to increase under predicted future climatic conditions, with the largest increases in cities with present-day high pollution. On average across the 50 cities, the summertime daily 1-h maximum increased 4.8 ppb, with the largest increase at 9.6 ppb. The average number of days/summer exceeding the 8-h regulatory standard increased 68%. Elevated ozone levels correspond to approximately a 0.11% to 0.27% increase in daily total mortality. While actual future ozone concentrations depend on climate and other influences such as changes in emissions of anthropogenic precursors, the results presented here indicate that with other factors constant, climate change could detrimentally affect air quality and thereby harm human health.

URLhttp://environment.yale.edu/uploads/publications/Bell_2007_Clim_Change.pdf
DOIDOI 10.1007/s10584-006-9166-7
Reference number

298

Short TitleClimate Change, Ambient Ozone, and Health in 50 U.S. Cities
Citation Key298