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20th-century industrial black carbon emissions altered Arctic climate forcing
McConnell, J.R.; Edwards, R.; Kok, G.L.; Flanner, M.G.; Zender, C.S.; Saltzman, E.S.; Banta, J.R.; Pasteris, D.R.; Carter, M.M.; Kahl, J.D.W. (2007). 20th-century industrial black carbon emissions altered Arctic climate forcing. Science (Wash.) 317(5843): 1381-1384
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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    Carbonaceous deposits; Climatic changes; Glacial deposition; PN, Arctic [Marine Regions]; Marine

Authors  Top 
  • McConnell, J.R.
  • Edwards, R.
  • Kok, G.L.
  • Flanner, M.G.
  • Zender, C.S.
  • Saltzman, E.S.
  • Banta, J.R.
  • Pasteris, D.R.
  • Carter, M.M.
  • Kahl, J.D.W.

    Black carbon (BC) from biomass and fossil fuel combustion alters chemical and physical properties of the atmosphere and snow albedo, yet little is known about its emission or deposition histories. Measurements of BC, vanillic acid, and non-sea-salt sulfur in ice cores indicate that sources and concentrations of BC in Greenland precipitation varied greatly since 1788 as a result of boreal forest fires and industrial activities. Beginning about 1850, industrial emissions resulted in a sevenfold increase in ice-core BC concentrations, with most change occurring in winter. BC concentrations after about 1951 were lower but increasing. At its maximum from 1906 to 1910, estimated surface climate forcing in early summer from BC in Arctic snow was about 3 watts per square meter, which is eight times the typical preindustrial forcing value.

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