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Simultaneously mitigating near-term climate change and improving human health and food security

Shindell, Drew; Kuylenstierna, Johann C.I.; Vignati, Elisabetta; van Dingenen, Rita; Amann, Markus; Klimont, Zbigniew; Anenberg, Suan C.; Muller, Nicholas; Janssens-Maenhout, Greet; Raes, Frank; Schwartz, Joel; Faluvegi, Greg; Pozzoli, Luca; Kupiainen, Kaarle; Höglund-Isaksson, Lena; Emberson, Lisa; Streets, David; Ramanathan, V.; Hicks, Kevin; Oanh, N.T. Kim; Milly, George; Williams, Martin; Demkine, Volodymyr; Fowler, David. 2012 Simultaneously mitigating near-term climate change and improving human health and food security. Science, 335 (6065). 183-189. 10.1126/science.1210026

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Abstract/Summary

Tropospheric ozone and black carbon (BC) contribute to both degraded air quality and global warming. We considered ~400 emission control measures to reduce these pollutants by using current technology and experience. We identified 14 measures targeting methane and BC emissions that reduce projected global mean warming ~0.5°C by 2050. This strategy avoids 0.7 to 4.7 million annual premature deaths from outdoor air pollution and increases annual crop yields by 30 to 135 million metric tons due to ozone reductions in 2030 and beyond. Benefits of methane emissions reductions are valued at $700 to $5000 per metric ton, which is well above typical marginal abatement costs (less than $250). The selected controls target different sources and influence climate on shorter time scales than those of carbon dioxide–reduction measures. Implementing both substantially reduces the risks of crossing the 2°C threshold.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1126/science.1210026
Programmes: CEH Topics & Objectives 2009 - 2012 > Biogeochemistry
CEH Sections: Billett (to November 2013)
ISSN: 0036-8075
Additional Keywords: tropospheric ozone, black carbon
NORA Subject Terms: Atmospheric Sciences
Health
Date made live: 16 Jan 2012 12:42
URI: http://nora.nerc.ac.uk/id/eprint/16366

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