ECCO V4r4: Daily Sea Surface Height on LLC90 Grid, 1992-2017

1992-01-01 to 2018-01-01 daily-averaged dynamic sea surface height and model sea level anomaly data on the native LLC90 grid. The dataset is an ocean and sea-ice state estimate from NASA's ECCO V4r4 project, a dynamically consistent reconstruction of the global ocean state. It assimilates observations from multiple satellite altimeters, radiometers, gravimeters, and in-situ programs like Argo and WOCE.

Use Cases

• Modeling global ocean circulation patterns based on the dynamically consistent state estimate.
• Analyzing long-term sea level anomaly trends based on assimilated satellite altimeter data.
• Studying ocean-atmosphere interactions based on the reconstructed surface states.
• Validating other ocean models against the observationally constrained ECCO solution.

Strengths

• Covers a 26-year time range from 1992 to 2018.
• Assimilates data from over 10 distinct satellite missions and in-situ observation programs.
• Provides a dynamically and kinematically consistent reconstruction of the 3D ocean state.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data freshness should be verified; the last update date is 2026-03 13, but the time series ends in 2018.

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 02:55:06.351508; time series ends 2018-01-01.

Geography

Global