Simultaneously Mitigating Near-Term Climate Change and Improving Human Health and Food Security

Drew Shindell, Johan C. I. Kuylenstierna, Elisabetta Vignati, Rita van Dingenen, Markus Amann, Zbigniew Klimont, Susan C. Anenberg, Nicholas Muller, Greet Janssens-Maenhout, Frank Raes, Joel Schwartz, Greg Faluvegi, Luca Pozzoli, Kaarle Kupiainen, Lena Hoeglund-Isaksson, Lisa Emberson, David Streets, V. Ramanathan, Kevin Hicks, N. T. Kim OanhGeorge Milly, Martin Williams, Volodymyr Demkine, David Fowler

Research output: Contribution to journalArticlepeer-review

952 Citations (Scopus)

Abstract

Tropospheric ozone and black carbon (BC) contribute to both degraded air quality and global warming. We considered similar to 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 similar to 0.5 degrees 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 degrees C threshold.
Original languageEnglish
Pages (from-to)183 - 189
Number of pages7
JournalScience
Volume335
Issue number6065
DOIs
Publication statusPublished - 13 Jan 2012

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