Wednesday, 12 November, 2025 at 16:00 CET / 15:00 UTC
Registration Link: https://washington.zoom.us/meeting/register/RWJqny02Q3azb3b1ck0FeA
Meeting ID: 945 6821 7722 ● Passcode: 877451
Find your local number: https://us06web.zoom.us/u/kdy6pLJAeC
SCOR Working Group 168 Webinar #5
Title: Secret shifts in the ocean’s biological carbon pump
Presenter:
Louise Delaigue
Laboratoire d’Océanographie de Villefranche
Recent advances have improved estimates of marine carbon uptake, but the processes driving spatial and vertical variability in biologically mediated carbon fluxes under climate change remain insufficiently understood. Analysis of the past two decades indicates that the global mean of biologically respired carbon has remained stable, yet its vertical and regional distribution is shifting in response to climate-driven changes in circulation, stratification, and ecosystem structure. These reorganizations have not altered the global inventory, but they are reshaping the depth and location of sequestration in ways that reduce the structural stability of the biological carbon pump. This emerging instability in the return flux may pose a greater long-term risk, as it points to a weakening resilience of the ocean carbon sink under continued climate change.
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