Detection and reduction of uncertainties in marine biogeochemical models

Marine ecosystems drive global carbon uptake, contributing to the overall ocean carbon sink of about one quarter of anthropogenic CO₂. Life in the ocean essentially reduces the impacts of persistent rise in atmospheric concentrations. It is still uncertain where the tipping point lies. Challenges with appropriate representation of biogeochemical processes in Earth System Models undermines the effort to quantify seasonal to multidecadal variability in ocean uptake of atmospheric CO₂. Improved availability of high quality observational data and development of metrics that employed observations would aid to constrain model developments through detection and reduction of uncertainties and ultimately enhance model predictions.