One size fits all? Calibrating an ocean biogeochemistry model for different circulations

Kriest, Iris; Kähler, Paul; Koeve, Wolfgang; Kvale, Karin; Sauerland, Volkmar; Oschlies, Andreas

doi:https://doi.org/10.5194/bg-17-3057-2020

Articles | Volume 17, issue 12

https://doi.org/10.5194/bg-17-3057-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-17-3057-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 12

Research article

|

18 Jun 2020

Research article |

| 18 Jun 2020

One size fits all? Calibrating an ocean biogeochemistry model for different circulations

Iris Kriest, Paul Kähler, Wolfgang Koeve, Karin Kvale, Volkmar Sauerland, and Andreas Oschlies

Supplement

https://doi.org/10.5194/bg-17-3057-2020-supplement

Model code and software

Model code and data set I. Kriest https://data.geomar.de/thredds/catalog/open_access/kriest_et_al_2020_bg/catalog.html

TMM package for offline ocean biogeochemical simulations S. Khatiwala https://github.com/samarkhatiwala/tmm

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Short summary

Constants of global biogeochemical ocean models are often tuned by hand to match observations of nutrients or oxygen. We investigate the effect of this tuning by optimising six constants of a global biogeochemical model, simulated in five different offline circulations. Optimal values for three constants adjust to distinct features of the circulation applied and can afterwards be swapped among the circulations, without losing too much of the model's fit to observed quantities.