Tracking Improvement in Simulated Marine Biogeochemistry Between CMIP5 and CMIP6

Séférian, Roland ; Berthet, Sarah ; Yool, Andrew ; Palmiéri, Julien ; Bopp, Laurent ; Tagliabue, Alessandro ; Kwiatkowski, Lester ; Aumont, Olivier ; Christian, James ; Dunne, John ; Gehlen, Marion ; Ilyina, Tatiana ; John, Jasmin G. ; Li, Hongmei ; Long, Matthew C. ; Luo, Jessica Y. ; Nakano, Hideyuki ; Romanou, Anastasia ; Schwinger, Jörg ; Stock, Charles ; Santana-Falcón, Yeray ; Takano, Yohei ; Tjiputra, Jerry ; Tsujino, Hiroyuki ; Watanabe, Michio ; Wu, Tongwen ; Wu, Fanghua ; Yamamoto, Akitomo

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<p align=justify>Purpose of Review The changes or updates in ocean biogeochemistry component have been mapped between CMIP5 and CMIP6 model versions, and an assessment made of how far these have led to improvements in the simulated mean state of marine biogeochemical models within the current generation of Earth system models (ESMs). Recent Findings The representation of marine biogeochemistry has progressed within the current generation of Earth system models. However, it remains difficult to identify which model updates are responsible for a given improvement. In addition, the full potential of marine biogeochemistry in terms of Earth system interactions and climate feedback remains poorly examined in the current generation of Earth system models. Summary Increasing availability of ocean biogeochemical data, as well as an improved understanding of the underlying processes, allows advances in the marine biogeochemical components of the current generation of ESMs. The present study scrutinizes the extent to which marine biogeochemistry components of ESMs have progressed between the 5th and the 6th phases of the Coupled Model Intercomparison Project (CMIP).</p>
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