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Climatic Change

, Volume 128, Issue 1–2, pp 71–84 | Cite as

Spatially resolved estimation of ozone-related mortality in the United States under two representative concentration pathways (RCPs) and their uncertainty

  • Young-Min Kim
  • Ying Zhou
  • Yang Gao
  • Joshua S. Fu
  • Brent A. Johnson
  • Cheng Huang
  • Yang Liu
Article

Abstract

The spatial pattern of the uncertainty in air pollution-related health impacts due to climate change has rarely been studied due to the lack of high-resolution model simulations, especially under the Representative Concentration Pathways (RCPs), the latest greenhouse gas emission pathways. We estimated future tropospheric ozone (O3) and related excess mortality and evaluated the associated uncertainties in the continental United States under RCPs. Based on dynamically downscaled climate model simulations, we calculated changes in O3 level at 12 km resolution between the future (2057 and 2059) and base years (2001–2004) under a low-to-medium emission scenario (RCP4.5) and a fossil fuel intensive emission scenario (RCP8.5). We then estimated the excess mortality attributable to changes in O3. Finally, we analyzed the sensitivity of the excess mortality estimates to the input variables and the uncertainty in the excess mortality estimation using Monte Carlo simulations. O3-related premature deaths in the continental U.S. were estimated to be 1312 deaths/year under RCP8.5 (95 % confidence interval (CI): 427 to 2198) and −2118 deaths/year under RCP4.5 (95 % CI: −3021 to −1216), when allowing for climate change and emissions reduction. The uncertainty of O3-related excess mortality estimates was mainly caused by RCP emissions pathways. Excess mortality estimates attributable to the combined effect of climate and emission changes on O3 as well as the associated uncertainties vary substantially in space and so do the most influential input variables. Spatially resolved data is crucial to develop effective community level mitigation and adaptation policy.

Keywords

Excess Mortality Population Projection Representative Concentration Pathway West North Central Community Earth System Model Version 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This study was supported by the Centers for Disease Control and Prevention (CDC) (Grant No. 5 U01 EH000405) and by the National Institutes of Health (NIH) (Grant No. 1R21ES020225). National Science Foundation through TeraGrid resources provided by National Institute for Computational Sciences (NICS) (TG-ATM110009 and UT-TENN0006) and resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory supported by the Office of Science of the U.S. Department of Energy (DEAC05-00OR22725) were used for the climate and air pollution model simulations. Yang Gao was partly supported by the Office of Science of the U.S. Department of Energy as part of the Regional and Global Climate Modeling Program. The Pacific Northwest National Laboratory is operated for DOE by Battelle Memorial Institute (DE-AC05-76RL01830).

Supplementary material

10584_2014_1290_MOESM1_ESM.docx (2.8 mb)
ESM 1 (DOCX 2846 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Young-Min Kim
    • 1
  • Ying Zhou
    • 1
  • Yang Gao
    • 2
  • Joshua S. Fu
    • 3
  • Brent A. Johnson
    • 4
    • 6
  • Cheng Huang
    • 5
  • Yang Liu
    • 1
  1. 1.Department of Environmental Health, Rollins School of Public HealthEmory UniversityAtlantaUSA
  2. 2.Atmospheric Science and Global Change DivisionPacific Northwest National LaboratoryRichlandUSA
  3. 3.Department of Civil and Environmental EngineeringUniversity of TennesseeKnoxvilleUSA
  4. 4.Department of Biostatistics and Bioinformatics, Rollins School of Public HealthEmory UniversityAtlantaUSA
  5. 5.Department of Global Health and Department of Environmental and Occupational HealthMilken Institute School of Public Health, George Washington UniversityWashingtonUSA
  6. 6.Department of Biostatistics and Computational BiologyUniversity of RochesterRochesterUSA

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