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Black carbon scavenging by low-level Arctic clouds

Author

Listed:
  • Paul Zieger

    (Stockholm University
    Stockholm University)

  • Dominic Heslin-Rees

    (Stockholm University
    Stockholm University)

  • Linn Karlsson

    (Stockholm University
    Stockholm University)

  • Makoto Koike

    (University of Tokyo)

  • Robin Modini

    (Paul Scherrer Institute)

  • Radovan Krejci

    (Stockholm University
    Stockholm University)

Abstract

Black carbon (BC) from anthropogenic and natural sources has a pronounced climatic effect on the polar environment. The interaction of BC with low-level Arctic clouds, important for understanding BC deposition from the atmosphere, is studied using the first long-term observational data set of equivalent black carbon (eBC) inside and outside of clouds observed at Zeppelin Observatory, Svalbard. We show that the measured cloud residual eBC concentrations have a clear seasonal cycle with a maximum in early spring, due to the Arctic haze phenomenon, followed by cleaner summer months with very low concentrations. The scavenged fraction of eBC was positively correlated with the cloud water content and showed lower scavenged fractions at low temperatures, which may be due to mixed-phase cloud processes. A trajectory analysis revealed potential sources of eBC and the need to ensure that aerosol-cloud measurements are collocated, given the differences in air mass origin of cloudy and non-cloudy periods.

Suggested Citation

  • Paul Zieger & Dominic Heslin-Rees & Linn Karlsson & Makoto Koike & Robin Modini & Radovan Krejci, 2023. "Black carbon scavenging by low-level Arctic clouds," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41221-w
    DOI: 10.1038/s41467-023-41221-w
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    References listed on IDEAS

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    1. M. Sand & T. K. Berntsen & K. von Salzen & M. G. Flanner & J. Langner & D. G. Victor, 2016. "Response of Arctic temperature to changes in emissions of short-lived climate forcers," Nature Climate Change, Nature, vol. 6(3), pages 286-289, March.
    2. S. McKenzie Skiles & Mark Flanner & Joseph M. Cook & Marie Dumont & Thomas H. Painter, 2018. "Radiative forcing by light-absorbing particles in snow," Nature Climate Change, Nature, vol. 8(11), pages 964-971, November.
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