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  • Cooper, AlanBlueSky Genetics,South Australian Museum (author)

A global environmental crisis 42,000 years ago

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • American Association for the Advancement of Science (AAAS),2021
  • 8 s.

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:51c2cde4-9ea2-445c-a6bf-fddb10ae2346
  • https://lup.lub.lu.se/record/51c2cde4-9ea2-445c-a6bf-fddb10ae2346URI
  • https://doi.org/10.1126/science.abb8677DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Geological archives record multiple reversals of Earth’s magnetic poles, but the global impacts of these events, if any, remain unclear. Uncertain radiocarbon calibration has limited investigation of the potential effects of the last major magnetic inversion, known as the Laschamps Excursion [41 to 42 thousand years ago (ka)]. We use ancient New Zealand kauri trees (Agathis australis) to develop a detailed record of atmospheric radiocarbon levels across the Laschamps Excursion. We precisely characterize the geomagnetic reversal and perform global chemistry-climate modeling and detailed radiocarbon dating of paleoenvironmental records to investigate impacts. We find that geomagnetic field minima ~42 ka, in combination with Grand Solar Minima, caused substantial changes in atmospheric ozone concentration and circulation, driving synchronous global climate shifts that caused major environmental changes, extinction events, and transformations in the archaeological record.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Turney, Chris S.M.University of New South Wales (author)
  • Palmer, JonathanUniversity of New South Wales (author)
  • Hogg, AlanUniversity of Waikato (author)
  • McGlone, MattLandcare Research (author)
  • Wilmshurst, JanetLandcare Research,University of Auckland (author)
  • Lorrey, Andrew M.National Institute of Water and Atmospheric Research, New Zealand (author)
  • Heaton, Timothy J.University of Sheffield (author)
  • Russell, James M.Brown University (author)
  • McCracken, KenUniversity of New South Wales (author)
  • Anet, Julien G.Zurich University of Applied Sciences (ZHAW) (author)
  • Rozanov, EugeneSaint Petersburg State University,ETH Zürich,Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center (PMOD/WRC) (author)
  • Friedel, MarinaETH Zürich (author)
  • Suter, IvoSwiss Federal Laboratories for Materials Science and Technology (author)
  • Peter, ThomasETH Zürich (author)
  • Muscheler, RaimundLund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Kvartärgeologi,Geologiska institutionen,Centre for Environmental and Climate Science (CEC),Faculty of Science,Quaternary Sciences,Department of Geology(Swepub:lu)geol-rmu (author)
  • Adolphi, FlorianAlfred-Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven(Swepub:lu)geol-foa (author)
  • Dosseto, AnthonyUniversity of Wollongong (author)
  • Tyler Faith, J.University of Utah,Natural History Museum of Utah (author)
  • Fenwick, PavlaGondwana Tree-Ring Laboratory (author)
  • Fogwill, Christopher J.Keele University (author)
  • Hughen, KonradWoods Hole Oceanographic Institution (author)
  • Lipson, MathewUniversity of New South Wales (author)
  • Liu, JiaboSouthern University of Science and Technology (author)
  • Nowaczyk, NorbertGFZ German Research Centre for Geosciences (author)
  • Rainsley, EleanorKeele University (author)
  • Ramsey, Christopher BronkUniversity of Oxford (author)
  • Sebastianelli, PaoloNational University of Cordoba, Argentina (author)
  • Souilmi, YassineUniversity of Adelaide (author)
  • Stevenson, JanelleAustralian National University (author)
  • Thomas, ZoëUniversity of New South Wales (author)
  • Tobler, RaymondUniversity of Adelaide (author)
  • Zech, RolandFriedrich Schiller University Jena (author)
  • BlueSky GeneticsSouth Australian Museum (creator_code:org_t)

Related titles

  • In:Science: American Association for the Advancement of Science (AAAS)371:6531, s. 811-8180036-80751095-9203

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