Source-to-sink pathways of dissolved organic carbon in the river–estuary–ocean continuum: a modeling investigation

Yao, Jialing; Chen, Zhi; Ge, Jianzhong; Zhang, Wenyan

doi:https://doi.org/10.5194/bg-21-5435-2024

Articles | Volume 21, issue 23

https://doi.org/10.5194/bg-21-5435-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-21-5435-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 23

Research article

|

06 Dec 2024

Research article |

| 06 Dec 2024

Source-to-sink pathways of dissolved organic carbon in the river–estuary–ocean continuum: a modeling investigation

Jialing Yao, Zhi Chen, Jianzhong Ge, and Wenyan Zhang

Supplement

https://doi.org/10.5194/bg-21-5435-2024-supplement

Data sets

Interannual Variabilities of Nutrients and Phytoplankton off the Changjiang Estuary in Response to Changing River Inputs J. Ge et al. https://figshare.com/s/ab600431c5958ee9d261

Influence of suspended sediment front on nutrients and phytoplankton dynamics off the Changjiang Estuary: A FVCOM-ERSEM coupled model experiment J. Ge et al. https://figshare.com/s/243b4e8417b7bd0106d8

Model code and software

ERSEM (22.11) Marine Systems Modelling group https://doi.org/10.5281/zenodo.7300564

An unstructured grid, finite-volume, three-dimensional, primitive equations ocean model: application to coastal ocean and estuaries C. Chen et al. https://github.com/FVCOM-GitHub/FVCOM/releases

Download

Article (8783 KB)
Full-text XML

Short summary

The transformation of dissolved organic carbon (DOC) in estuaries is vital for coastal carbon cycling. We studied source-to-sink pathways of DOC in the Changjiang Estuary using a physics–biogeochemistry model. Results showed a transition of DOC from a sink to a source in the plume area during summer, with a transition from terrestrial-dominant to marine-dominant DOC. Terrigenous and marine DOC exports account for about 31 % and 69 %, respectively.