ECCO V4r4: Global Mean Sea Level Daily Averages, 1992-2017

ECCO Version 4 Release 4 provides daily-averaged global mean sea level from a dynamically consistent ocean and sea-ice state estimate. The dataset is produced by NASA and covers the period from 1992-01-01 to 2018-01-01. It assimilates observations from multiple satellite altimeters, radiometers, gravimeters, and in-situ oceanographic programs.

Use Cases

• Modeling long-term sea-level rise trends based on the 26-year daily time series.
• Validating ocean general circulation model outputs against the dynamically consistent state estimate.
• Analyzing interannual variability in global mean sea level based on the assimilated satellite and in-situ data.
• Correlating sea-level changes with other climate indices using the daily-averaged values.

Strengths

• Covers a 26-year period from 1992 to 2018, providing a long-term climate record.
• Assimilates data from over 10 satellite missions and multiple in-situ observation programs.
• Produces a dynamically and kinematically consistent reconstruction of ocean states.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data freshness should be verified as the last metadata update is dated 2026-03 13.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Free-running solution of the MITgcm model fit to observations in a least-squares sense, assimilating satellite and in-situ data.

Time Range

1992-01-01 to 2018-01-01

Freshness

Last updated 2026-03-13 03:05:39.197688; freshness should be verified.

Geography

Global