Black carbon vertical profiles strongly affect its radiative forcing uncertainty

B. H. Samset, G. Myhre, M. Schulz, Y. Balkanski, S. Bauer, T. K. Berntsen, H. Bian, N. Bellouin, T. Diehl, R. C. Easter, S. J. Ghan, T. Iversen, S. Kinne, A. Kirkeväg, J. F. Lamarque, G. Lin, X. Liu, J. E. Penner, O. Seland, R. B. SkeieP. Stier, T. Takemura, K. Tsigaridis, K. Zhang

    研究成果: Contribution to journalArticle査読

    163 被引用数 (Scopus)

    抄録

    The impact of black carbon (BC) aerosols on the global radiation balance is not well constrained. Here twelve global aerosol models are used to show that at least 20% of the present uncertainty in modeled BC direct radiative forcing (RF) is due to diversity in the simulated vertical profile of BC mass. Results are from phases 1 and 2 of the global aerosol model intercomparison project (AeroCom). Additionally, a significant fraction of the variability is shown to come from high altitudes, as, globally, more than 40% of the total BC RF is exerted above 5 km. BC emission regions and areas with transported BC are found to have differing characteristics. These insights into the importance of the vertical profile of BC lead us to suggest that observational studies are needed to better characterize the global distribution of BC, including in the upper troposphere.

    本文言語英語
    ページ(範囲)2423-2434
    ページ数12
    ジャーナルAtmospheric Chemistry and Physics
    13
    5
    DOI
    出版ステータス出版済み - 2013

    All Science Journal Classification (ASJC) codes

    • 大気科学

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