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September 5, 2025Proceedings of the National Academy of SciencesOpen Access

Pulsed biogenic methane emissions coupled with episodic warming during the Toarcian Oceanic Anoxic Event

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Authors

RQRuoyuan QiuZYZhichao YuBMBenjamin Mills

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Overview

Analysis reveals significant biogenic methane release during the Toarcian event, suggesting climate dynamics may be influenced by such emissions.

Key Points

  • At least 4,700 Gt of carbon from biogenic methane release is essential to replicate the carbon isotope shifts.
  • This massive methane release likely drove an increase in atmospheric CH4 and global temperature, potentially exceeding 2 °C.
  • Bayesian inversion and MCMC simulations facilitated the investigation of carbon release fluxes during climatic warming.
  • The active CH4 cycle serves as a feedback mechanism, exacerbating environmental deterioration and contributing to marine extinction.

Cite This Study

Qiu et al. (2025) studied this question.

synapsesocial.com/papers/68bb5f7a6d6d5674bcd03afehttps://doi.org/10.1073/pnas.2423598122
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