Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 25, issue 6
Articles | Volume 25, issue 6
https://doi.org/10.5194/hess-25-3397-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-25-3397-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 6
Research article
 | 
17 Jun 2021
Research article |  | 17 Jun 2021

Machine learning deciphers CO2 sequestration and subsurface flowpaths from stream chemistry

Andrew R. Shaughnessy, Xin Gu, Tao Wen, and Susan L. Brantley

Supplement

https://doi.org/10.5194/hess-25-3397-2021-supplement

Data sets

Susquehanna Shale Hills Critical Zone Observatory Stream Water Chemistry (2008) Interdisciplinary Earth Data Alliance (IEDA) S. L. Brantley, L. Jin, D. Andrews, G. Holmes, M. Holleran, J. Z. Williams, E. Herndon, C. J. Duffy, and P. L. Sullivan https://doi.org/10.1594/IEDA/100241

Susquehanna Shale Hills Critical Zone Observatory Stream Water Chemistry (2009) Interdisciplinary Earth Data Alliance (IEDA) S. L. Brantley, L. Jin, D. Andrews, G. Holmes, M. Bhatt, M. Holleran, N. Kaiser, J. Z. Williams, E. Herndon, C. J. Duffy, and P. L. Sullivan https://doi.org/10.1594/IEDA/100242

Susquehanna Shale Hills Critical Zone Observatory Stream Water Chemistry (2010) Interdisciplinary Earth Data Alliance (IEDA) S. L. Brantley, E. Bazilevskaya, D. Andrews, J. Z. Williams, E. Herndon, G. Holmes, M. Bhatt, M. Holleran, T. Yesavage, E. Thomas, C. J. Duffy, and P. L. Sullivan https://doi.org/10.1594/IEDA/100243

Continuous precipitation and stream chemistry data, Hubbard Brook Ecosystem Study, 1963-present E. Bernhardt, G. E. Likens, and E. Rosi https://doi.org/10.6073/pasta/4022d829f3a1fa4057b63b5db8b1a172

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Short summary
It is often difficult to determine the sources of solutes in streams and how much each source contributes. We developed a new method of unmixing stream chemistry via machine learning. We found that sulfate in three watersheds is related to groundwater flowpaths. Our results emphasize that acid rain reduces a watershed's capacity to remove CO2 from the atmosphere, a key geological control on climate. Our method will help scientists unmix stream chemistry in watersheds where sources are unknown.
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