S-MODE MASS: Airborne Hyperspectral Ocean Imagery

Airborne hyperspectral imagery from a 2021 pilot campaign captures ocean surface details off San Francisco. The data, collected by the Modular Aerial Sensing System (MASS) on a Twin Otter aircraft, operates in the visible to near-infrared spectrum (400-990 nm). It is used to study sub-mesoscale ocean dynamics, including whitecap kinematics and ocean color.

Use Cases

• Analyzing whitecap kinematics and wave breaking processes based on visible imagery.
• Measuring ocean color for phytoplankton distribution studies using hyperspectral bands.
• Mapping sub-mesoscale ocean fronts and eddies from detailed geospatial surveys.
• Validating satellite-derived ocean color products with higher-resolution airborne data.

Strengths

• Data is from a focused scientific campaign with a specific two-week collection period in October 2021.
• Imagery covers a high-resolution spectral range (400-990 nm) for detailed analysis.
• Dataset is hosted by a major space agency (NASA), indicating a level of curation.

Limitations

• Critical metadata is missing, including row/record counts, file sizes, and specific column/band names.
• Conflicting 'last updated' dates (2026-04-09 vs 2023-05-31) create uncertainty about data currency.
• Data format (ENVI within ZIP files) requires specialized software for access and analysis.

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

October 2021 (two-week pilot campaign)

Freshness

2026-04-09 (most recent update from datagov, but conflicts with earlier date)

Geography

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