WOCE Ocean Current Profiles from Lowered Acoustic Doppler Measurements (1991-1997)

1991 to 1997 data contains estimates of deep ocean absolute currents and shear from Lowered Acoustic Doppler Current Profilers (LADCP) deployed during the World Ocean Circulation Experiment (WOCE). The dataset was collected by scientists inventing the field of LADCP acquisition and processing, requiring integration with ancillary data like CTD, GPS, and ship navigation. Its cross-platform presence on NASA EarthData and Data.gov signals its importance as a foundational resource for physical oceanography.

Use Cases

• Validating and calibrating global ocean circulation models using deep water velocity and shear profiles.
• Studying the transport of water masses and heat by analyzing absolute current vectors at various depths.
• Investigating methodological evolution in LADCP processing by comparing data across the 20-year acquisition period referenced in the descriptions.
• Assessing vertical shear in ocean currents, which is critical for understanding mixing and energy dissipation.

Strengths

• Data covers a significant 6-year period (1991-1997) from the major World Ocean Circulation Experiment.
• Collection represents foundational work by scientists inventing the LADCP acquisition and processing field.
• Method provides full-depth ocean velocity estimates, overcoming challenges of measuring slow deep-water currents.

Limitations

• Critical metadata conflicts exist: last update dates are reported as both 1997-11-19 and 2026-03 05.
• Ancillary data required for processing (e.g., CTD, GPS) may be missing from older deployments, affecting data quality.
• Dataset organization and naming conventions show variety due to its evolution over 20 years of acquisition.

Provenance

Source

World Ocean Circulation Experiment (WOCE) project, with organization listed as NOAA_NCEI on one platform.

Collection Method

Velocity measurements from ADCPs mounted on CTD rosette frames lowered through the water column, processed with ancillary data streams.

Time Range

1991 to 1997

Freshness

2026-03-05 22:29:50.433340

Geography

Global ocean, from various cruises.