ECCO V4r4: Monthly Mean Sea Surface Height on a 0.5-Degree Grid, 1992-2017

1992-01-01 to 2018-01-01 monthly-averaged dynamic sea surface height data on a regular 0.5-degree grid, produced by NASA's ECCO project. The dataset is a dynamically consistent ocean state estimate from the MITgcm model, constrained by multiple satellite and in-situ observations including altimetry, sea surface temperature, and salinity. It covers a 26-year period relevant for climate and ocean circulation studies.

Use Cases

• Analyzing long-term sea level rise trends based on the 26-year time series of sea surface height.
• Studying ocean circulation patterns and eddy variability using the dynamically consistent model output.
• Validating other ocean or climate models against the observationally constrained ECCO state estimate.
• Investigating the relationship between sea surface height and other ocean variables like temperature and salinity mentioned as constraints.

Strengths

• Covers a 26-year time period 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 spatial grid, which is a common resolution for global climate studies.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data freshness should be verified; the last metadata update is dated 2026-03 13, but the data itself ends in 2017.

Provenance

Source

National Aeronautics and Space Administration (NASA), ECCO project.

Collection Method

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

Time Range

1992-01-01T12:00:00 to 2018-01-01T00:00:00

Freshness

Last metadata updated 2026-03-13 02:55:10.644918; data coverage ends 2018-01-01.

Geography

Global ocean coverage on a 0.5-degree grid.