Assessment of transparent exopolymer particles in the  Arctic Ocean implemented into the coupled ocean–sea ice–biogeochemistry model FESOM2.1–REcoM3

Zeising, Moritz; Oziel, Laurent; Thoms, Silke; Gürses, Özgür; Hauck, Judith; Heinold, Bernd; Losa, Svetlana N.; van Pinxteren, Manuela; Völker, Christoph; Zeppenfeld, Sebastian; Bracher, Astrid

doi:10.5194/gmd-19-2077-2026

Articles | Volume 19, issue 5

https://doi.org/10.5194/gmd-19-2077-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-2077-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

Model evaluation paper

|

12 Mar 2026

Model evaluation paper |

| 12 Mar 2026

Assessment of transparent exopolymer particles in the Arctic Ocean implemented into the coupled ocean–sea ice–biogeochemistry model FESOM2.1–REcoM3

Moritz Zeising, Laurent Oziel, Silke Thoms, Özgür Gürses, Judith Hauck, Bernd Heinold, Svetlana N. Losa, Manuela van Pinxteren, Christoph Völker, Sebastian Zeppenfeld, and Astrid Bracher

Data sets

Curated model results of TEP simulation in FESOM2.1-REcoM3 M. Zeising et al. https://doi.org/10.5281/zenodo.15174190

Curated model results of control simulation in FESOM2.1-REcoM3 M. Zeising et al. https://doi.org/10.5281/zenodo.18433195

Arctic Ocean Colour Plankton MY L4 daily climatology and monthly observations Copernicus Marine Service https://doi.org/10.48670/moi-00293

Arctic Ocean Chlorophyll a based on AOReg.emp algorithm (R2018) K. M. Lewis et al. https://doi.org/10.25740/kc822vj3040

Organic matter and bacteria measurements of POLARSTERN cruise PS114 and Maria S. Merian cruise MSM77 A. von Jackowski et al. https://doi.org/10.1594/PANGAEA.915751

Dissolved and Particulate Combined Carbohydrates, pH, Inorganic Ions, CDOM and Particulate Absorption of SML and Bulk Water in Arctic Surface Seawater and Melt Ponds S. Zeppenfeld et al. https://doi.org/10.1594/PANGAEA.961004

Short summary

We assess the implementation of additional organic carbon pathways into a global setup of a numerical model, which simulates the ocean circulation, sea ice, and biogeochemical processes. With a focus on the Arctic Ocean, this model tracks the temporal and spatial dynamics of phytoplankton, exudation of organic carbon, and its aggregation to so-called transparent exopolymer particles. We evaluate the simulation using measurements from ship-based and remote-sensing campaigns in the Arctic Ocean.