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

1992-01-01 to 2018-01-01 monthly-averaged sea-ice velocity data interpolated to a regular 0.5-degree grid. The dataset is produced by NASA's Estimating the Circulation and Climate of the Ocean (ECCO) project, a dynamically consistent state estimate. It is derived from a model fit to multiple observational sources including satellite altimeters, radiometers, gravimeters, and in-situ ocean measurements.

Use Cases

• Analyzing long-term trends in sea-ice motion and transport based on monthly velocity averages.
• Validating or calibrating other sea-ice or climate models based on the ECCO state estimate methodology.
• Studying linkages between atmospheric forcing and ice movement based on the dynamically consistent reconstruction.
• Investigating spatial patterns of sea-ice drift on a global 0.5-degree grid.

Strengths

• Covers a 26-year time series from 1992 to 2017, providing a long-term climate record.
• Integrates multiple observational constraints including satellite altimetry, sea surface temperature, salinity, and in-situ profiles.
• Provides data on a regular 0.5-degree global grid, facilitating spatial analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data freshness should be verified; the last update is listed as 2026-03-13, which may be a metadata artifact.
• The dataset's file formats include JPEG, BIN, ISO, HTML, and PDF, which may require specific tools for data extraction.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Dynamically and kinematically consistent reconstruction (state estimate) from the MIT general circulation model (MITgcm) 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 03:03:05.502877; freshness should be verified.

Geography

Global