MOM6-COBALT: Global Ocean Physical and Biogeochemical Diagnostics, 1965-2017

Monthly mean data from 1965 to 2017 for dissolved oxygen, nitrate, temperature, and salinity, interpolated to a 1-degree horizontal resolution. The data originates from a high-resolution (1/8-degree) global ocean-ice model (MOM6-SIS2) coupled with the COBALTv2 biogeochemical model, which uses 33 tracers. This dataset was produced by Cristina Schultz of Princeton University as part of a NOAA-funded project.

Use Cases

• Analyzing long-term trends in ocean deoxygenation based on dissolved oxygen data.
• Studying nutrient cycling and primary production dynamics based on nitrate and other biogeochemical tracers.
• Validating global climate model outputs against a high-resolution physical oceanographic simulation.
• Investigating coastal ecosystem responses to riverine nutrient inputs based on the model's freshwater runoff forcing.

Strengths

• 53-year temporal coverage from 1965 to 2017 provides a long-term climate perspective.
• Model output is derived from a high-resolution (1/8-degree) eddying ocean grid with 75 vertical layers.
• Biogeochemical component (COBALTv2) simulates coupled cycles of carbon, nitrogen, phosphorus, iron, silicon, alkalinity, oxygen, and lithogenic matter.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is model output (interpolated to 1-degree) rather than direct observational measurements.

Provenance

Source

Model output from NOAA Geophysical Fluid Dynamics Laboratory's MOM6-SIS2 and COBALTv2 models.

Collection Method

Numerical simulation forced by JRA55 1.5 atmospheric reanalysis and Dai et al. river runoff climatology, with data interpolated to monthly 1-degree means.

Time Range

1965-2017

Geography

Global ocean