ECCO V4r4: Monthly Ocean Bolus Transport Streamfunction on LLC90 Grid, 1992-2018

Global ocean bolus transport streamfunction data on a 1-degree model grid, produced by NASA's ECCO project. The dataset is a monthly-averaged, dynamically consistent state estimate covering the period from January 1992 to January 2018. It was created by fitting the MITgcm model to observations from satellite altimeters, radiometers, scatterometers, gravimeters, and in-situ ocean measurements.

Use Cases

• Modeling ocean eddy transport and parameterization based on the Gent-McWilliams streamfunction.
• Analyzing long-term trends in ocean circulation from the 26-year time series.
• Validating global climate models against a dynamically consistent ocean state estimate.
• Studying the interaction between ocean currents and climate using assimilated satellite and in-situ data.

Strengths

• Covers a 26-year period from 1992 to 2018, providing a long-term climate record.
• Assimilates multiple observational constraints including satellite altimetry, sea surface temperature, salinity, and in-situ profiles.
• Provides data on a native high-resolution LLC90 model grid for detailed spatial analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset's primary file formats (JPEG, BIN, ISO, HTML, PDF) suggest raw or packaged data that may require specialized tools to process.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Dynamically and kinematically consistent reconstruction (state estimate) using the 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 03:05:19.917971; freshness should be verified.

Geography

Global ocean