ECCO V4r4: Global Ocean Bottom Pressure Snapshot Data, 1992-2017

ECCO Version 4 Release 4 provides instantaneous ocean bottom pressure and pressure anomaly data on a 1-degree global grid. The dataset is a dynamically consistent state estimate fit to observations from satellite altimeters, radiometers, gravimeters, and in-situ instruments. It covers the 26-year period from 1992-01-01 to 2018-01-01 and was produced by NASA.

Use Cases

• Modeling global ocean circulation dynamics based on bottom pressure data.
• Assimilating satellite-derived ocean observations into climate models based on the listed constraints (SSH, SST, SSS, OBP).
• Analyzing long-term ocean pressure anomalies for climate studies based on the 26-year time range.
• Validating ocean general circulation model outputs against a constrained state estimate.

Strengths

• Integrates multiple observational constraints from over 10 satellite missions and in-situ programs.
• Covers a 26-year time period (1992-2017), enabling long-term climate analysis.
• Provides data on a native high-resolution LLC90 model grid for dynamical consistency.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is provided in multiple non-standard file formats (JPEG, BIN, ISO, HTML, PDF), which may complicate access.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Dynamically consistent ocean and sea-ice state estimate (ECCO V4r4) fit to observations in a least-squares sense.

Time Range

1992-01-01 to 2018-01-01

Freshness

Last updated 2026-03-13 02:56:49.239983; freshness should be verified.

Geography

Global