Optimality-based non-Redfield plankton–ecosystem model (OPEM v1.1) in UVic-ESCM 2.9 –  Part 2: Sensitivity analysis and model calibration

Chien, Chia-Te; Pahlow, Markus; Schartau, Markus; Oschlies, Andreas

doi:https://doi.org/10.5194/gmd-13-4691-2020

Articles | Volume 13, issue 10

https://doi.org/10.5194/gmd-13-4691-2020

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

https://doi.org/10.5194/gmd-13-4691-2020

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

Articles | Volume 13, issue 10

Model evaluation paper

|

02 Oct 2020

Model evaluation paper |

| 02 Oct 2020

Optimality-based non-Redfield plankton–ecosystem model (OPEM v1.1) in UVic-ESCM 2.9 – Part 2: Sensitivity analysis and model calibration

Chia-Te Chien, Markus Pahlow, Markus Schartau, and Andreas Oschlies

Supplement

https://doi.org/10.5194/gmd-13-4691-2020-supplement

Model code and software

UVic-updates-opem: Optimality-based Plankton Ecosystem Model (OPEM v1.0) for the UVic-ESCM. Markus Pahlow https://doi.org/10.3289/SW_1_2020

Short summary

We demonstrate sensitivities of tracers to parameters of a new optimality-based plankton–ecosystem model (OPEM) in the UVic-ESCM. We find that changes in phytoplankton subsistence nitrogen quota strongly impact the nitrogen inventory, nitrogen fixation, and elemental stoichiometry of ordinary phytoplankton and diazotrophs. We introduce a new likelihood-based metric for model calibration, and it shows the capability of constraining globally averaged oxygen, nitrate, and DIC concentrations.