Potential Impact of Climate Change on Air Pollution-Related Human Health Effects
- 18 May 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 43 (13), 4979-4988
- https://doi.org/10.1021/es803650w
Abstract
The potential health impact of ambient ozone and PM2.5 concentrations modulated by climate change over the United States is investigated using combined atmospheric and health modeling. Regional air quality modeling for 2001 and 2050 was conducted using CMAQ Modeling System with meteorology from the GISS Global Climate Model, downscaled regionally using MM5, keeping boundary conditions of air pollutants, emission sources, population, activity levels, and pollution controls constant. BenMap was employed to estimate the air pollution health outcomes at the county, state, and national level for 2050 caused by the effect of meteorology on future ozone and PM2.5 concentrations. The changes in calculated annual mean PM2.5 concentrations show a relatively modest change with positive and negative responses (increasing PM2.5 levels across the northeastern U.S.) although average ozone levels slightly decrease across the northern sections of the U.S., and increase across the southern tier. Results suggest that climate change driven air quality-related health effects will be adversely affected in more than 2/3 of the continental U.S. Changes in health effects induced by PM2.5 dominate compared to those caused by ozone. PM2.5-induced premature mortality is about 15 times higher than that due to ozone. Nationally the analysis suggests approximately 4000 additional annual premature deaths due to climate change impacts on PM2.5 vs 300 due to climate change-induced ozone changes. However, the impacts vary spatially. Increased premature mortality due to elevated ozone concentrations will be offset by lower mortality from reductions in PM2.5 in 11 states. Uncertainties related to different emissions projections used to simulate future climate, and the uncertainties forecasting the meteorology, are large although there are potentially important unaddressed uncertainties (e.g., downscaling, speciation, interaction, exposure, and concentration−response function of the human health studies).Keywords
This publication has 37 references indexed in Scilit:
- Ambient Particulate Pollutants in the Ultrafine Range Promote Early Atherosclerosis and Systemic Oxidative StressCirculation Research, 2008
- Climate Change: The Public Health ResponseAmerican Journal of Public Health, 2008
- Reducing ambient levels of fine particulates could substantially improve health: a mortality impact assessment for 26 European citiesJournal of Epidemiology and Community Health, 2008
- Spatial and Temporal Variation in PM 2.5 Chemical Composition in the United States for Health Effects StudiesEnvironmental Health Perspectives, 2007
- Climate and human health: synthesizing environmental complexity and uncertaintyStochastic Environmental Research and Risk Assessment, 2007
- Mortality Effects of Longer Term Exposures to Fine Particulate Air Pollution: Review of Recent Epidemiological EvidenceInhalation Toxicology, 2007
- Air pollution and inflammation in type 2 diabetes: a mechanism for susceptibilityOccupational and Environmental Medicine, 2006
- Seasonal Analyses of Air Pollution and Mortality in 100 US CitiesAmerican Journal of Epidemiology, 2005
- Ozone and Short-term Mortality in 95 US Urban Communities, 1987-2000JAMA, 2004
- The potential health impacts of climate variability and change for the United States: executive summary of the report of the health sector of the U.S. National Assessment.Environmental Health Perspectives, 2000