S-MODE: Airborne Ocean Imagery from IOP1 Campaign

Level 1 DoppVis imagery was captured at 2hz from a Nikon D850 camera aboard a DHC-6 Twin Otter aircraft during the S-MODE IOP1 campaign in Fall 2022. The dataset contains georeferenced TIFF images at 50cm resolution, processed for lens distortion and boresight misalignment. These images support research into how short-scale ocean dynamics influence vertical exchanges of physical and biological variables.

Use Cases

• Analyzing ocean surface features and frontal dynamics based on visible-wavelength imagery.
• Validating satellite-derived ocean color or sea surface temperature products using coincident airborne data.
• Studying the relationship between surface expressions and subsurface vertical transport, a core goal of the S-MODE experiment.
• Conducting photogrammetric or change-detection studies using georeferenced image flightlines.

Strengths

• Imagery has high spatial resolution (50cm) and precise georeferencing to WGS84/UTM zone 10.
• Data collection is supported by a synchronized GPS/IMU system, providing accurate positional metadata.
• Images are calibrated for lens distortion and boresight misalignment, indicating a processed, analysis-ready product.

Limitations

• Key metadata such as row count, file size, and specific license terms are unavailable or conflicting across platforms.
• The dataset's temporal coverage is limited to a single campaign (IOP1) in Fall 2022.
• Documentation gaps exist, as column names and a detailed data dictionary are not provided.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Collected via the Modular Aerial Sensing System (MASS) mounted on a DHC-6 Twin Otter aircraft.

Time Range

Fall 2022

Freshness

Last updated 2026-04-09 (Data.gov), conflicting with a 2023-04-30 date on NASA EarthData.

Geography

Approximately 300 km offshore of San Francisco, California, USA.