IDEAS home Printed from https://ideas.repec.org/a/nat/natcli/v14y2024i9d10.1038_s41558-024-02074-3.html
   My bibliography  Save this article

Reduced Arctic Ocean CO2 uptake due to coastal permafrost erosion

Author

Listed:
  • David M. Nielsen

    (Max Planck Institute for Meteorology
    Universität Hamburg)

  • Fatemeh Chegini

    (Max Planck Institute for Meteorology
    Universität Hamburg)

  • Joeran Maerz

    (Max Planck Institute for Meteorology
    University of Bergen and Bjerknes Centre for Climate Research)

  • Sebastian Brune

    (Universität Hamburg)

  • Moritz Mathis

    (Helmholtz-Zentrum Hereon)

  • Mikhail Dobrynin

    (Deutscher Wetterdienst (DWD))

  • Johanna Baehr

    (Universität Hamburg)

  • Victor Brovkin

    (Max Planck Institute for Meteorology
    Universität Hamburg)

  • Tatiana Ilyina

    (Max Planck Institute for Meteorology
    Universität Hamburg
    Helmholtz-Zentrum Hereon)

Abstract

Arctic coastal permafrost erosion is projected to increase by a factor of 2–3 by 2100. However, organic matter fluxes from the coastal permafrost into the ocean have not been considered in Earth system models so far. Here we represent coastal permafrost erosion in an Earth system model and perform simulations with varying permafrost organic matter properties, such as sinking fraction and nutrient content. We find that coastal erosion reduces the Arctic Ocean CO2 uptake from the atmosphere in all simulations: by 4.6–13.2 TgC yr−1 by 2100, which is ~7–14% of the Inner Arctic Ocean uptake. We show that coastal permafrost erosion exerts a positive biogeochemical feedback on climate, increasing atmospheric CO2 by 1–2 TgC yr−1 per °C of increase in global surface air temperature. Our work will allow coastal permafrost erosion to be considered in future climate change assessments.

Suggested Citation

  • David M. Nielsen & Fatemeh Chegini & Joeran Maerz & Sebastian Brune & Moritz Mathis & Mikhail Dobrynin & Johanna Baehr & Victor Brovkin & Tatiana Ilyina, 2024. "Reduced Arctic Ocean CO2 uptake due to coastal permafrost erosion," Nature Climate Change, Nature, vol. 14(9), pages 968-975, September.
  • Handle: RePEc:nat:natcli:v:14:y:2024:i:9:d:10.1038_s41558-024-02074-3
    DOI: 10.1038/s41558-024-02074-3
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41558-024-02074-3
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1038/s41558-024-02074-3?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
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    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:natcli:v:14:y:2024:i:9:d:10.1038_s41558-024-02074-3. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.