Evaluation of MITgcm-based ocean reanalyses for the Southern Ocean

Nakayama, Yoshihiro; Malyarenko, Alena; Zhang, Hong; Wang, Ou; Auger, Matthis; Nie, Yafei; Fenty, Ian; Mazloff, Matthew; Köhl, Armin; Menemenlis, Dimitris

doi:https://doi.org/10.5194/gmd-17-8613-2024

Articles | Volume 17, issue 23

https://doi.org/10.5194/gmd-17-8613-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-17-8613-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 23

Model evaluation paper

|

05 Dec 2024

Model evaluation paper |

| 05 Dec 2024

Evaluation of MITgcm-based ocean reanalyses for the Southern Ocean

Yoshihiro Nakayama, Alena Malyarenko, Hong Zhang, Ou Wang, Matthis Auger, Yafei Nie, Ian Fenty, Matthew Mazloff, Armin Köhl, and Dimitris Menemenlis

Supplement

https://doi.org/10.5194/gmd-17-8613-2024-supplement

Data sets

ECCOv4r5 output analyzed in "Evaluation of MITgcm-based ocean reanalysis for the Southern Ocean" Yoshihiro Nakayama https://doi.org/10.5281/zenodo.10930852

ECCO-LLC270 output analyzed in "Evaluation of MITgcm-based ocean reanalysis for the Southern Ocean" (Part 1) Yoshihiro Nakayama https://doi.org/10.5281/zenodo.10934677

SOSE output analyzed in "Evaluation of MITgcm-based ocean reanalysis for the Southern Ocean" (Part 1) Yoshihiro Nakayama https://doi.org/10.5281/zenodo.10935395

SOSE output analyzed in "Evaluation of MITgcm-based ocean reanalysis for the Southern Ocean" (Part 2-1) Yoshihiro Nakayama https://doi.org/10.5281/zenodo.13117969

GECCO3 Ocean Synthesis (41S6m) Armin Köhl https://doi.org/10.25592/uhhfdm.14187

Model code and software

Analysis scripts developed for "Evaluation of MITgcm-based ocean reanalysis for the Southern Ocean" Yoshihiro Nakayama https://doi.org/10.5281/zenodo.13270783

Short summary

Global- and basin-scale ocean reanalyses are becoming easily accessible. However, such ocean reanalyses are optimized for their entire model domains and their ability to simulate the Southern Ocean requires evaluation. We conduct intercomparison analyses of Massachusetts Institute of Technology General Circulation Model (MITgcm)-based ocean reanalyses. They generally perform well for the open ocean, but open-ocean temporal variability and Antarctic continental shelves require improvements.