Quantified, Localized Health Benefits of Accelerated Carbon Dioxide Emissions Reductions.
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Societal risks increase as Earth warms, but also for emissions trajectories accepting relatively high levels of near-term emissions while assuming future negative emissions will compensate even if they lead to identical warming . Accelerating carbon dioxide (CO2) emissions reductions, including as a substitute for negative emissions, hence reduces long-term risks but requires dramatic near-term societal transformations . A major barrier to emissions reductions is the difficulty of reconciling immediate, localized costs with global, long-term benefits [3, 4]. However, 2°C trajectories not relying on negative emissions or 1.5°C trajectories require elimination of most fossil fuel related emissions. This generally reduces co-emissions that cause ambient air pollution, resulting in near-term, localized health benefits. We therefore examine the human health benefits of increasing ambition of 21st century CO2 reductions by 180 GtC; an amount that would shift a 'standard' 2°C scenario to 1.5°C or could achieve 2°C without negative emissions. The decreased air pollution leads to 153±43 million fewer premature deaths worldwide, with ~40% occurring during the next 40 years, and minimal climate disbenefits. More than a million premature deaths would be prevented in many metropolitan areas in Asia and Africa, and >200,000 in individual urban areas on every inhabited continent except Australia.
SubjectScience & Technology
Life Sciences & Biomedicine
Meteorology & Atmospheric Sciences
Environmental Sciences & Ecology
FUTURE CLIMATE SIMULATIONS
Published Version (Please cite this version)10.1038/s41558-018-0108-y
Publication InfoShindell, Drew; Faluvegi, Greg; Seltzer, Karl; & Shindell, Cary (2018). Quantified, Localized Health Benefits of Accelerated Carbon Dioxide Emissions Reductions. Nature climate change, 8(4). pp. 291-295. 10.1038/s41558-018-0108-y. Retrieved from https://hdl.handle.net/10161/17534.
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Nicholas Professor of Earth Science
Drew Shindell is a Professor of Climate Sciences at the Nicholas School of the Environment, Duke University. From 1995 to 2014 he was a scientist at the NASA Goddard Institute for Space Studies in New York City. Dr. Shindell taught atmospheric chemistry at Columbia University for more than a decade. His research concerns natural and human drivers of climate change, linkages between air quality and climate change, and the interface between climate change science and policy. He has been an auth
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