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Title: The impact of climate change and emissions control on future ozone levels: Implications for human health

Journal Article · · Environment International
 [1];  [2];  [3];  [4];  [1]; ORCiD logo [1]
  1. Emory Univ., Atlanta, GA (United States)
  2. Sungkyunkwan Univ. School of Medicine, Seoul (Republic of Korea)
  3. Ocean Univ. of China, Shandong (China)
  4. Univ. of Tennessee, Knoxville, TN (United States)

Overwhelming evidence has shown that, from the Industrial Revolution to the present, human activities influence ground-level ozone (O3) concentrations. Past studies demonstrate links between O3 exposure and health. However, knowledge gaps remain in our understanding concerning the impacts of climate change mitigation policies on O3 concentrations and health. Using a hybrid downscaling approach, we evaluated the separate impact of climate change and emission control policies on O3 levels and associated excess mortality in the US in the 2050s under two Representative Concentration Pathways (RCPs). We show that, by the 2050s, under RCP4.5, increased O3 levels due to combined climate change and emission control policies, could contribute to an increase of approximately 50 premature deaths annually nationwide in the US. The biggest impact, however, is seen under RCP8.5, where rises in O3 concentrations are expected to result in over 2,200 additional premature deaths annually. Here, the largest increases in O3 are seen in RCP8.5 in the Northeast, the Southeast, the Central, and the West regions of the US. Additionally, when O3 increases are examined by climate change and emissions contributions separately, the benefits of emissions mitigation efforts may significantly outweigh the effects of climate change mitigation policies on O3-related mortality.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1565650
Alternate ID(s):
OSTI ID: 1495612
Journal Information:
Environment International, Vol. 108, Issue C; ISSN 0160-4120
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (3)

Aging Exacerbates Neuroinflammatory Outcomes Induced by Acute Ozone Exposure journal January 2018
Health Effects of Climate Change Through Temperature and Air Pollution journal June 2019
Interactive effects of changing stratospheric ozone and climate on tropospheric composition and air quality, and the consequences for human and ecosystem health journal January 2019