Articles | Volume 13, issue 10
Geosci. Model Dev., 13, 4691–4712, 2020
https://doi.org/10.5194/gmd-13-4691-2020
Geosci. Model Dev., 13, 4691–4712, 2020
https://doi.org/10.5194/gmd-13-4691-2020

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 et al.

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.