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Decrease in radiative forcing by organic aerosol nucleation, climate, and land use change

Author

Listed:
  • Jialei Zhu

    (University of Michigan)

  • Joyce E. Penner

    (University of Michigan)

  • Fangqun Yu

    (State University of New York at Albany)

  • Sanford Sillman

    (University of Michigan)

  • Meinrat O. Andreae

    (Max Planck Institute for Chemistry
    University of California San Diego
    King Saud University)

  • Hugh Coe

    (University of Manchester)

Abstract

Organic nucleation is an important source of atmospheric aerosol number concentration, especially in pristine continental regions and during the preindustrial period. Here, we improve on previous simulations that overestimate boundary layer nucleation in the tropics and add changes to climate and land use to evaluate climate forcing. Our model includes both pure organic nucleation and heteromolecular nucleation of sulfuric acid and organics and reproduces the profile of aerosol number concentration measured in the Amazon. Organic nucleation decreases the sum of the total aerosol direct and indirect radiative forcing by 12.5%. The addition of climate and land use change decreases the direct radiative forcing (−0.38 W m−2) by 6.3% and the indirect radiative forcing (−1.68 W m−2) by 3.5% due to the size distribution and number concentration change of secondary organic aerosol and sulfate. Overall, the total radiative forcing associated with anthropogenic aerosols is decreased by 16%.

Suggested Citation

  • Jialei Zhu & Joyce E. Penner & Fangqun Yu & Sanford Sillman & Meinrat O. Andreae & Hugh Coe, 2019. "Decrease in radiative forcing by organic aerosol nucleation, climate, and land use change," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08407-7
    DOI: 10.1038/s41467-019-08407-7
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    Cited by:

    1. Ziqian Zhong & Bin He & Hans W. Chen & Deliang Chen & Tianjun Zhou & Wenjie Dong & Cunde Xiao & Shang-ping Xie & Xiangzhou Song & Lanlan Guo & Ruiqiang Ding & Lixia Zhang & Ling Huang & Wenping Yuan &, 2023. "Reversed asymmetric warming of sub-diurnal temperature over land during recent decades," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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