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A global temperature control of silicate weathering intensity

Author

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  • Kai Deng

    (Tongji University
    ETH Zürich)

  • Shouye Yang

    (Tongji University)

  • Yulong Guo

    (Tongji University)

Abstract

Silicate weathering as an important negative feedback can regulate the Earth’s climate over time, but much debate concerns its response strength to each climatic factor and its evolution with land surface reorganisation. Such discrepancy arises from lacking weathering proxy validation and scarce quantitative paleo-constraints on individual forcing factors. Here we examine the catchment-scale link of silicate weathering intensity with various environmental parameters using a global compilation of modern sediment dataset (n = 3828). We show the primary control of temperature on silicate weathering given the monotonic increase of feldspar dissolution with it (0–30 °C), while controls of precipitation or topographic-lithological factors are regional and subordinate. We interpret the non-linear forcing of temperature on feldspar dissolution as depletion of more reactive plagioclase (relative to orthoclase) at higher temperature. Our results hint at stronger temperature-weathering feedback at lower surface temperature and support the hypothesis of increased land surface reactivity during the late Cenozoic cooling.

Suggested Citation

  • Kai Deng & Shouye Yang & Yulong Guo, 2022. "A global temperature control of silicate weathering intensity," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29415-0
    DOI: 10.1038/s41467-022-29415-0
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    References listed on IDEAS

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    1. Jane K. Willenbring & Friedhelm von Blanckenburg, 2010. "Long-term stability of global erosion rates and weathering during late-Cenozoic cooling," Nature, Nature, vol. 465(7295), pages 211-214, May.
    2. Ken L. Ferrier & Kimberly L. Huppert & J. Taylor Perron, 2013. "Climatic control of bedrock river incision," Nature, Nature, vol. 496(7444), pages 206-209, April.
    3. Jeremy K. Caves Rugenstein & Daniel E. Ibarra & Friedhelm von Blanckenburg, 2019. "Neogene cooling driven by land surface reactivity rather than increased weathering fluxes," Nature, Nature, vol. 571(7763), pages 99-102, July.
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    1. Fangyang Hu & Hehe Jiang & Bo Wan & Mihai N. Ducea & Lei Gao & Fu-Yuan Wu, 2024. "Latitude-dependent oxygen fugacity in arc magmas," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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