IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-40951-1.html
   My bibliography  Save this article

Antarctic evidence for an abrupt northward shift of the Southern Hemisphere westerlies at 32 ka BP

Author

Listed:
  • Abhijith U. Venugopal

    (GNS Science
    Victoria University of Wellington
    University of Canterbury)

  • Nancy A. N. Bertler

    (GNS Science
    Victoria University of Wellington)

  • Jeffrey P. Severinghaus

    (UC San Diego)

  • Edward J. Brook

    (Oregon State University)

  • Giuseppe Cortese

    (GNS Science)

  • James E. Lee

    (Oregon State University)

  • Thomas Blunier

    (University of Copenhagen)

  • Paul A. Mayewski

    (University of Maine)

  • Helle A. Kjær

    (University of Copenhagen
    University of Tasmania)

  • Lionel Carter

    (Victoria University of Wellington)

  • Michael E. Weber

    (University of Bonn)

  • Richard H. Levy

    (GNS Science
    Victoria University of Wellington)

  • Rebecca L. Pyne

    (GNS Science)

  • Marcus J. Vandergoes

    (GNS Science)

Abstract

High-resolution ice core records from coastal Antarctica are particularly useful to inform our understanding of environmental changes and their drivers. Here, we present a decadally resolved record of sea-salt sodium (a proxy for open-ocean area) and non-sea salt calcium (a proxy for continental dust) from the well-dated Roosevelt Island Climate Evolution (RICE) core, focusing on the time period between 40–26 ka BP. The RICE dust record exhibits an abrupt shift towards a higher mean dust concentration at 32 ka BP. Investigating existing ice-core records, we find this shift is a prominent feature across Antarctica. We propose that this shift is linked to an equatorward displacement of Southern Hemisphere westerly winds. Subsequent to the wind shift, data suggest a weakening of Southern Ocean upwelling and a decline of atmospheric CO2 to lower glacial values, hence making this shift an important glacial climate event with potentially important insights for future projections.

Suggested Citation

  • Abhijith U. Venugopal & Nancy A. N. Bertler & Jeffrey P. Severinghaus & Edward J. Brook & Giuseppe Cortese & James E. Lee & Thomas Blunier & Paul A. Mayewski & Helle A. Kjær & Lionel Carter & Michael , 2023. "Antarctic evidence for an abrupt northward shift of the Southern Hemisphere westerlies at 32 ka BP," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40951-1
    DOI: 10.1038/s41467-023-40951-1
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-40951-1
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-023-40951-1?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Marcus J. Vandergoes & Rewi M. Newnham & Frank Preusser & Chris H. Hendy & Thomas V. Lowell & Sean J. Fitzsimons & Alan G. Hogg & Haino Uwe Kasper & Christian Schlüchter, 2005. "Regional insolation forcing of late Quaternary climate change in the Southern Hemisphere," Nature, Nature, vol. 436(7048), pages 242-245, July.
    2. Jinho Ahn & Edward J. Brook, 2014. "Siple Dome ice reveals two modes of millennial CO2 change during the last ice age," Nature Communications, Nature, vol. 5(1), pages 1-6, September.
    3. F. Lambert & B. Delmonte & J. R. Petit & M. Bigler & P. R. Kaufmann & M. A. Hutterli & T. F. Stocker & U. Ruth & J. P. Steffensen & V. Maggi, 2008. "Dust-climate couplings over the past 800,000 years from the EPICA Dome C ice core," Nature, Nature, vol. 452(7187), pages 616-619, April.
    4. Torben Struve & Katharina Pahnke & Frank Lamy & Marc Wengler & Philipp Böning & Gisela Winckler, 2020. "A circumpolar dust conveyor in the glacial Southern Ocean," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    5. Giovanni Baccolo & Barbara Delmonte & P. B. Niles & Giannantonio Cibin & Elena Di Stefano & Dariush Hampai & Lindsay Keller & Valter Maggi & Augusto Marcelli & Joseph Michalski & Christopher Snead & M, 2021. "Jarosite formation in deep Antarctic ice provides a window into acidic, water-limited weathering on Mars," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    6. Christo Buizert & Michael Sigl & Mirko Severi & Bradley R. Markle & Justin J. Wettstein & Joseph R. McConnell & Joel B. Pedro & Harald Sodemann & Kumiko Goto-Azuma & Kenji Kawamura & Shuji Fujita & Hi, 2018. "Abrupt ice-age shifts in southern westerly winds and Antarctic climate forced from the north," Nature, Nature, vol. 563(7733), pages 681-685, November.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Ilaria Crotti & Aurélien Quiquet & Amaelle Landais & Barbara Stenni & David J. Wilson & Mirko Severi & Robert Mulvaney & Frank Wilhelms & Carlo Barbante & Massimo Frezzotti, 2022. "Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Xiyu Dong & Gayatri Kathayat & Sune O. Rasmussen & Anders Svensson & Jeffrey P. Severinghaus & Hanying Li & Ashish Sinha & Yao Xu & Haiwei Zhang & Zhengguo Shi & Yanjun Cai & Carlos Pérez-Mejías & Jon, 2022. "Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    3. Yuhao Dai & Jimin Yu & Haojia Ren & Xuan Ji, 2022. "Deglacial Subantarctic CO2 outgassing driven by a weakened solubility pump," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Christoph C. Raible & Joaquim G. Pinto & Patrick Ludwig & Martina Messmer, 2021. "A review of past changes in extratropical cyclones in the northern hemisphere and what can be learned for the future," Wiley Interdisciplinary Reviews: Climate Change, John Wiley & Sons, vol. 12(1), January.
    5. Gavin Piccione & Terrence Blackburn & Slawek Tulaczyk & E. Troy Rasbury & Mathis P. Hain & Daniel E. Ibarra & Katharina Methner & Chloe Tinglof & Brandon Cheney & Paul Northrup & Kathy Licht, 2022. "Subglacial precipitates record Antarctic ice sheet response to late Pleistocene millennial climate cycles," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40951-1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.