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Monitoring, modeling, and forecasting long-term changes in coastal seawater quality due to climate change

Author

Listed:
  • Xianghong Guan

    (South China University of Technology)

  • Hua Huang

    (South China University of Technology)

  • Xiong Ke

    (South China University of Technology)

  • Xiaoqian Cheng

    (South China University of Technology)

  • Heng Zhang

    (South China University of Technology)

  • Acong Chen

    (South China University of Technology)

  • Guanglei Qiu

    (South China University of Technology)

  • Haizhen Wu

    (South China University of Technology)

  • Chaohai Wei

    (South China University of Technology
    South China University of Technology)

Abstract

As climate change affects the physicochemical properties of coastal water, the resulting element re-exposure may override the emission reductions achieved by human pollution control efforts. Here, we conduct an analysis the water quality-climate effect over eight consecutive years from 2015 to 2022 along the South China coast combined with CMIP6 Scenario Model Intercomparison Project. Then we utilized a data-driven model to predict the concentrations of trace metals and nutrients over the next 80 years. It is suggested that the acidification process carries the risk of triggering the ocean’s buffering mechanisms. During this alkalinity replenishment process, trace metals, such as Cd, Cr, Cu, Fe, Hg, Mn, Pb, and Zn, in the sediment are released into the water phase, along with Ca2+ and Mg2+. Here, the aim of this study is to show that the nexus of re-exposure-eutrophication-emission reduction with human activities and climate feedback, cannot be ignored in the pursuit of effective environmental governance.

Suggested Citation

  • Xianghong Guan & Hua Huang & Xiong Ke & Xiaoqian Cheng & Heng Zhang & Acong Chen & Guanglei Qiu & Haizhen Wu & Chaohai Wei, 2025. "Monitoring, modeling, and forecasting long-term changes in coastal seawater quality due to climate change," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-57913-4
    DOI: 10.1038/s41467-025-57913-4
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