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Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene

Author

Listed:
  • S. Schüpbach

    (University of Bern)

  • H. Fischer

    (University of Bern)

  • M. Bigler

    (University of Bern)

  • T. Erhardt

    (University of Bern)

  • G. Gfeller

    (University of Bern)

  • D. Leuenberger

    (University of Bern)

  • O. Mini

    (University of Bern)

  • R. Mulvaney

    (British Antarctic Survey, National Environment Research Council)

  • N. J. Abram

    (British Antarctic Survey, National Environment Research Council
    The Australian National University)

  • L. Fleet

    (British Antarctic Survey, National Environment Research Council)

  • M. M. Frey

    (British Antarctic Survey, National Environment Research Council)

  • E. Thomas

    (British Antarctic Survey, National Environment Research Council)

  • A. Svensson

    (University of Copenhagen)

  • D. Dahl-Jensen

    (University of Copenhagen)

  • E. Kettner

    (University of Copenhagen)

  • H. Kjaer

    (University of Copenhagen)

  • I. Seierstad

    (University of Copenhagen)

  • J. P. Steffensen

    (University of Copenhagen)

  • S. O. Rasmussen

    (University of Copenhagen)

  • P. Vallelonga

    (University of Copenhagen)

  • M. Winstrup

    (University of Copenhagen)

  • A. Wegner

    (Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar-und Meeresforschung)

  • B. Twarloh

    (Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar-und Meeresforschung)

  • K. Wolff

    (Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar-und Meeresforschung)

  • K. Schmidt

    (Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar-und Meeresforschung)

  • K. Goto-Azuma

    (National Institute of Polar Research)

  • T. Kuramoto

    (National Institute of Polar Research
    Fukushima Prefectural Centre for Environmental Creation)

  • M. Hirabayashi

    (National Institute of Polar Research)

  • J. Uetake

    (National Institute of Polar Research
    Colorado State University)

  • J. Zheng

    (Natural Resources Canada, Geological Survey of Canada)

  • J. Bourgeois

    (Natural Resources Canada, Geological Survey of Canada)

  • D. Fisher

    (University of Ottawa)

  • D. Zhiheng

    (Chinese Academy of Sciences)

  • C. Xiao

    (Chinese Academy of Sciences)

  • M. Legrand

    (Université Grenoble Alpes, CS 40 700)

  • A. Spolaor

    (University of Venice)

  • J. Gabrieli

    (University of Venice)

  • C. Barbante

    (University of Venice)

  • J.-H. Kang

    (Korea Polar Research Institute)

  • S. D. Hur

    (Korea Polar Research Institute)

  • S. B. Hong

    (Korea Polar Research Institute)

  • H. J. Hwang

    (Korea Polar Research Institute)

  • S. Hong

    (Inha University)

  • M. Hansson

    (Stockholm University)

  • Y. Iizuka

    (Stockholm University)

  • I. Oyabu

    (Stockholm University)

  • R. Muscheler

    (Lund University)

  • F. Adolphi

    (University of Bern
    Lund University)

  • O. Maselli

    (Desert Research Institute, Nevada System of Higher Education)

  • J. McConnell

    (Desert Research Institute, Nevada System of Higher Education)

  • E. W. Wolff

    (University of Cambridge)

Abstract

The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. Separating source and transport effects, we find strongly reduced terrestrial biogenic emissions during glacial times reflecting net loss of vegetated area in North America. Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. A strong increase in terrestrial dust emissions during the coldest intervals indicates higher aridity and dust storm activity in East Asian deserts. Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little.

Suggested Citation

  • S. Schüpbach & H. Fischer & M. Bigler & T. Erhardt & G. Gfeller & D. Leuenberger & O. Mini & R. Mulvaney & N. J. Abram & L. Fleet & M. M. Frey & E. Thomas & A. Svensson & D. Dahl-Jensen & E. Kettner &, 2018. "Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03924-3
    DOI: 10.1038/s41467-018-03924-3
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