ECCO V4r4b: Monthly Ocean Bottom Pressure on a 0.5-Degree Grid, 1992-2017

1992-01-01 to 2018-01-01 monthly-averaged ocean bottom pressure data interpolated to a regular 0.5-degree grid. The dataset is a dynamically consistent state estimate from the MIT general circulation model, produced by NASA and constrained by multiple satellite and in-situ observations. It covers a 26-year period.

Use Cases

• Modeling global ocean mass transport and redistribution based on ocean bottom pressure data.
• Analyzing long-term trends in ocean bottom pressure for climate studies based on the 26-year time series.
• Validating ocean circulation models against a dynamically consistent state estimate.
• Studying the relationship between ocean bottom pressure and satellite gravimetry (GRACE) observations.

Strengths

• Covers a 26-year time period from 1992 to 2018.
• Integrates multiple observational constraints including satellite altimetry, SST, SSS, GRACE, and in-situ profiles.
• Data is interpolated to a consistent 0.5-degree spatial grid.
• Provides a dynamically and kinematically consistent reconstruction of ocean and sea-ice states.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to the availability of satellite missions within the 1992-2018 period.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Free-running solution of 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 03:04:39.476333; freshness should be verified.

Geography

Global ocean coverage