LLC4320: High-Resolution Ocean Model for Southern and Marmara Seas

LLC4320 is a high-resolution global ocean simulation dataset providing hourly estimates of oceanographic variables. It is based on the MITgcm model with a 2km nominal horizontal grid and 90 vertical levels, optimized for upper-ocean processes. The dataset includes three-dimensional fields like temperature, salinity, and velocity, as well as two-dimensional surface fluxes and anomalies.

Use Cases

• Analyzing upper-ocean mixing processes based on the high vertical resolution (1m at surface).
• Studying regional ocean circulation patterns from the 3D velocity fields.
• Investigating air-sea interactions using the net heat and freshwater flux variables.
• Examining tidal influences on sea level from the synthetic pressure field with 16 tidal constituents.
• Model validation and comparison using the high-fidelity state estimates.

Strengths

• High spatial resolution with a 2km nominal horizontal grid and 90 vertical levels.
• Hourly temporal resolution provides detailed insight into short-term ocean dynamics.
• Model configuration includes realistic forcing from ERA-Interim reanalysis and tidal constituents.

Limitations

• Metadata conflicts exist: last updated dates range from 2012 to 2026, and license information is inconsistent.
• Specific row counts, file sizes, and complete column lists are unavailable across all sources.
• The dataset's provenance and author details are largely unspecified.

Provenance

Source

MIT general circulation model (MITgcm) simulation, spun up from lower-resolution ECCO simulations.

Collection Method

Numerical simulation forced by 6-hourly ERA-Interim atmospheric reanalysis and synthetic tidal pressure.

Freshness

2026-04-09 22:02:32.643911

Geography

Global ocean simulation with regional focus on the Southern Ocean and Marmara Sea.