期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 49, 期 13, 页码 7580-7588出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.5b01324
关键词
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资金
- EPA's Climate Change Division
- U.S. Department of Energy's Office of Science
- U.S. Environmental Protection Agency's Climate Change Division [XA-83600001-0]
We evaluate the impact of climate change on U.S. air quality and health in 2050 and 2100 using a global modeling framework and integrated economic, climate, and air pollution projections. Three internally consistent socioeconomic scenarios are used to value health benefits of greenhouse gas mitigation policies specifically derived from slowing climate change. Our projections suggest that climate change, exclusive of changes in air pollutant emissions, can significantly impact ozone (03) and fine particulate matter (PM) pollution across the U.S. and increase associated health effects. Climate policy can substantially reduce these impacts, and climate-related air pollution health benefits alone can offset a significant fraction of mitigation costs. We find that in contrast to cobenefits from reductions to coemitted pollutants, the climate-induced air quality benefits of policy increase with time and are largest: between 2050 and 2100. Our projections also suggest that increasing climate policy stringency beyond a certain degree may lead to diminishing returns relative to its cost. However, our results indicate that the air quality impacts of climate change are substantial and should be considered by cost-benefit climate policy analyses.
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