ECCO V4r4: Sea-Ice and Snow Concentration and Thickness Snapshot, 1992-2017

ECCO Version 4 Release 4 provides a dynamically consistent reconstruction of sea-ice and snow conditions on a global LLC90 grid. The dataset includes instantaneous fields for concentration, thickness, and pressure loading, constrained by satellite and in-situ observations. It covers the period from 1992-01-01 to 2018-01-01 and was produced by NASA using the MIT general circulation model.

Use Cases

• Modeling sea-ice thickness evolution based on the provided thickness and concentration fields.
• Analyzing snow cover on sea ice using the snow concentration variable.
• Studying ocean-ice-atmosphere interactions based on the dynamically consistent state estimate framework.
• Validating satellite sea-ice concentration products against the model-observation synthesis.

Strengths

• Integrates multiple observational constraints including satellite altimetry, radiometry, gravimetry, and in-situ profiles.
• Covers a 26-year time period from 1992 to 2018.
• Provides a dynamically and kinematically consistent reconstruction of ocean and sea-ice states.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is provided in specialized formats (BIN, ISO) which may require specific tools for processing.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Free-running solution of the MITgcm, fit to observations in a least-squares sense.

Time Range

1992-01-01 to 2018-01-01

Freshness

Last updated 2026-03-13 03:03:20.221590; freshness should be verified.

Geography

Global