ECCO V4r4: Daily Ocean Bottom Pressure on a 0.5-Degree Grid (1992-2017)

1992-01-01 to 2018-01-01 daily-averaged ocean bottom pressure data interpolated to a regular 0.5-degree grid. This dataset is part of the ECCO Version 4 revision 4 (V4r4) ocean and sea-ice state estimate, a dynamically consistent reconstruction produced by NASA. The state estimate combines a global MITgcm model run with observations from satellite altimeters, radiometers, gravimeters, and in-situ instruments.

Use Cases

• Modeling ocean mass redistribution and sea-level rise based on daily ocean bottom pressure.
• Validating satellite gravimetry data (e.g., GRACE) using a model-observation synthesis.
• Studying deep ocean circulation and pressure gradients from a globally consistent reconstruction.
• Analyzing long-term trends in ocean bottom pressure over the 26-year period.

Strengths

• Covers a 26-year period from 1992 to 2018.
• Integrates multiple observational constraints including satellite altimetry, SST, SSS, and in-situ profiles.
• Provides data on a regular 0.5-degree spatial grid.
• Produced by NASA as part of a dynamically consistent state estimate.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Free-running MITgcm model solution fit to observations in a least-squares sense.

Time Range

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

Freshness

Last updated 2026-03 13 02:57:38.940560; freshness should be verified.

Geography

Global ocean