S-MODE Wavegliders: Ocean Dynamics Near San Francisco

Approximately 300 km offshore of San Francisco, the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) deployed three wave gliders during a pilot campaign in October 2021 and intensive periods in Fall 2022 and Spring 2023. The dataset contains high-frequency sensor observations, including sonic anemometers, radiometers, CTD profilers, ADCPs, and a 20Hz IMU, to study sub-mesoscale influences on vertical exchange. Data are provided in netCDF format.

Use Cases

• Analyzing sub-mesoscale ocean current variability based on ADCP and IMU data.
• Studying air-sea heat and momentum fluxes using sonic anemometer and radiometer measurements.
• Investigating vertical profiles of temperature and salinity from CTD profiler data.
• Model validation and assimilation of high-resolution ocean surface and near-surface observations.

Strengths

• Data originates from a coordinated NASA field campaign (S-MODE) with a defined scientific objective.
• Includes high-frequency (20Hz) platform motion data from an Inertial Measurement Unit (IMU).
• Integrates measurements from a suite of sensors (e.g., CTD, ADCP, anemometer) on three autonomous platforms.

Limitations

• Critical metadata is missing: specific column/variable names, row counts, and exact file sizes are not provided.
• The license is ambiguously listed as 'other-license-specified' without explicit terms.
• Update dates conflict between sources (2026 vs. 2023), casting doubt on dataset maintenance and freshness.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Field campaign observations from three instrumented wave glider autonomous surface vehicles.

Time Range

October 2021, Fall 2022, and Spring 2023.

Freshness

Last updated date conflicts: one source lists 2026 -04-09, another lists 2023-05-14.

Geography

Ocean region approximately 300 km offshore of San Francisco, California, USA.