Document Detail

Near-term climate mitigation by short-lived forcers.
MedLine Citation:
PMID:  23940357     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Emissions reductions focused on anthropogenic climate-forcing agents with relatively short atmospheric lifetimes, such as methane (CH4) and black carbon, have been suggested as a strategy to reduce the rate of climate change over the next several decades. We find that reductions of methane and black carbon would likely have only a modest impact on near-term global climate warming. Even with maximally feasible reductions phased in from 2015 to 2035, global mean temperatures in 2050 would be reduced by 0.16 °C, with a range of 0.04-0.35 °C because of uncertainties in carbonaceous aerosol emissions and aerosol forcing per unit of emissions. The high end of this range is only possible if total historical aerosol forcing is relatively small. More realistic emission reductions would likely provide an even smaller climate benefit. We find that the climate benefit from reductions in short-lived forcing agents are smaller than previously estimated. These near-term climate benefits of targeted reductions in short-lived forcers are not substantially different in magnitude from the benefits from a comprehensive climate policy.
Steven J Smith; Andrew Mizrahi
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Publication Detail:
Type:  Journal Article     Date:  2013-08-12
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  110     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2013 Aug 
Date Detail:
Created Date:  2013-08-28     Completed Date:  2013-11-22     Revised Date:  2013-12-02    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  14202-6     Citation Subset:  -    
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