ECCO V4r4: Daily Sea-Ice Velocity on a 0.5-Degree Grid, 1992-2017

ECCO Version 4 Release 4 provides daily-averaged sea-ice velocity interpolated to a regular 0.5-degree grid. The dataset is a dynamically consistent reconstruction of ocean and sea-ice states, produced by NASA by fitting a global MITgcm model to multiple satellite and in-situ observations. It covers the period from January 1, 1992, to January 1, 2018.

Use Cases

• Modeling sea-ice drift and deformation patterns based on daily velocity fields.
• Analyzing long-term trends in polar ice motion over the 26-year period.
• Validating other sea-ice or climate model outputs against this observationally constrained state estimate.
• Studying linkages between sea-ice velocity and ocean/atmospheric forcing mentioned in the reconstruction.

Strengths

• Integrates multiple observational constraints including satellite altimetry, sea surface temperature, and in-situ profiles.
• Covers a 26-year time range from 1992 to 2018.
• Provides data on a regular 0.5-degree spatial grid for consistent analysis.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Dynamically and kinematically consistent reconstruction from a MITgcm model fit to observations in a least-squares sense.

Time Range

1992-01-01 to 2018-01-01

Freshness

Last updated 2026-03-13 02:54:37.594720; freshness should be verified.

Geography

Global