Articles | Volume 19, issue 1
https://doi.org/10.5194/gmd-19-187-2026
https://doi.org/10.5194/gmd-19-187-2026
Model experiment description paper
 | 
07 Jan 2026
Model experiment description paper |  | 07 Jan 2026

Assessing vertical coordinate system performance in the Regional Modular Ocean Model 6 configuration for Northwest Pacific

Inseong Chang, Young Ho Kim, Young-Gyu Park, Hyunkeun Jin, Gyundo Pak, Andrew C. Ross, and Robert Hallberg

Data sets

Model input for "Assessing Vertical Coordinate System Performance in the Regional Modular Ocean Model 6 configuration for Northwest Pacific" I. Chang et al. https://doi.org/10.5281/zenodo.15054924

Model output for "Assessing Vertical Coordinate System Performance in the Regional Modular Ocean Model 6 configuration for Northwest Pacific" I. Chang et al. https://doi.org/10.5281/zenodo.15054536

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

River discharge and related historical data from the Global Flood Awareness System. v3.1 E. Zsoter et al. https://doi.org/10.24381/cds.a4fdd6b9

Mixed layer depth over the global ocean: a climatology computed with a density threshold criterion of 0.03 kg m3 from the value at the reference depth of 5 m C. de Boyer Montégut https://doi.org/10.17882/98226

Global Ocean Gridded L 4 Sea Surface Heights And Derived Variables Reprocessed 1993 Ongoing E. U. Copernicus Marine Service Information (CMEMS) https://doi.org/10.48670/moi-00148

Global Ocean Physics Reanalysis, Marine Data Store (MDS) E. U. Copernicus Marine Service Information (CMEMS) https://doi.org/10.48670/moi-00021

Model code and software

Model input for "Assessing Vertical Coordinate System Performance in the Regional Modular Ocean Model 6 configuration for Northwest Pacific" I. Chang et al. https://doi.org/10.5281/zenodo.15054440

MOM6 Modular Ocean Model https://github.com/mom-ocean/MOM6

MOM6 NOAA-GFDL https://github.com/NOAA-GFDL/MOM6

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Short summary
We conducted sensitivity experiments to examine how different vertical coordinates influence the representation of water masses and tides using a high-resolution regional ocean model for the Northwest Pacific. We found that the choice of vertical coordinate  strongly affects the degree of artificial mixing, which in turn changes how well the model reproduces key ocean features. This highlights the importance of selecting a vertical coordinate when developing regional ocean models.
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