ECCO V4r4: Daily Ocean Volume Fluxes on LLC90 Grid, 1992-2017

ECCO Version 4 Release 4 provides a 26-year, dynamically consistent reconstruction of global ocean and sea-ice states from 1992 to 2017. The NASA-led estimate assimilates data from over ten satellite missions and in-situ programs like Argo and GO-SHIP. This dataset delivers the resulting daily-averaged three-dimensional volume fluxes on the model's native high-resolution LLC90 grid.

Use Cases

• Model validation and calibration based on the observationally constrained state estimate.
• Analyzing long-term trends in ocean heat and volume transport based on the 26-year daily time series.
• Studying ocean-atmosphere coupling dynamics based on the reconstructed surface atmospheric states.
• Investigating sea ice-ocean interactions in polar regions based on the consistent sea-ice state reconstruction.

Strengths

• Covers a 26-year period from 1992-01-01 to 2018-01-01, providing a long-term climate record.
• Assimilates data from multiple satellite constellations (e.g., Jason, GRACE, Aquarius) and in-situ networks (e.g., Argo, WOCE).
• Provides data on a high-resolution native model grid (LLC90) for accurate dynamical analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific computational tasks.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Dynamically and kinematically consistent ocean/sea-ice state estimate from a free-running MITgcm model fit to observations in a least-squares sense.

Time Range

1992-01-01T12:00:00 to 2018-01-01T00:00:00

Freshness

Last updated 2026-03-13 02:55:58.648716; freshness should be verified.

Geography

Global ocean