Fig. 9: Sensitivity of marine carbon cycling to model tuning.
From: Zooplankton grazing is the largest source of uncertainty for marine carbon cycling in CMIP6 models
a–o Various aspects of global, annually-averaged marine carbon cycling are plotted against \(\overline{{{{{{{{\rm{NPP}}}}}}}}}\) for two suites of experiments. The “Slow Turnover” WOMBAT experiments (solid lines) are the same simulations shown in Figs. 7 and S8. The “High Turnover” WOMBAT experiments (dashed line) were parameterized with faster phytoplankton growth rates but are otherwise identical (see “Methods”; Table S4). Dashed vertical line bracket the ensemble of runs used to quantify the difference between “Slow Turnover” and “High Turnover” (adjoining horizontal lines) simulations. The x-axis is flipped to plot increasing PGI from left to right, consistent with Figs. 7 and S8.
