NASA LVIS Airborne Lidar Elevation of Polar Ice Sheets

NASA's LVIS instrument provides high-resolution surface elevation data over Greenland, Alaska, and Antarctica collected via airborne lidar scanning. The dataset is a product of NASA's Operation IceBridge campaigns and is managed by the NSIDC. The data was last updated in the NASA EarthData catalog in 2015, though a Data.gov entry shows a much later 2026 timestamp.

Use Cases

• Calibrating and validating satellite-based ice elevation measurements from missions like ICESat.
• Modeling ice sheet surface morphology and identifying features like crevasses or melt ponds.
• Assessing changes in ice sheet elevation over time to estimate mass loss contributions to sea level rise.
• Providing ground control points for digital elevation model generation in polar regions.

Strengths

• Data originates from NASA's authoritative Operation IceBridge campaigns, ensuring high instrument calibration and collection standards.
• Covers three critical polar regions: Greenland, Alaska, and Antarctica, offering broad geographic relevance for cryosphere studies.
• Utilizes the specialized LVIS (Land, Vegetation, and Ice Sensor) airborne lidar, designed for precise surface altimetry.

Limitations

• A significant conflict exists in the 'last updated' metadata: NASA EarthData lists 2015, while Data.gov lists 2026, casting doubt on data currency and maintenance.
• Critical technical details like row count, file size, specific column names, and data license are unavailable across all sources.
• The primary format listed is HTML, which is atypical for scientific data delivery and suggests the actual data files (likely binary or netCDF) are not directly described.

Provenance

Source

NASA Operation IceBridge campaigns, instrument LVIS.

Collection Method

Airborne lidar scanning laser altimetry.

Freshness

2026-03-13 20:33:39.519011 (from Data.gov, but conflicts with NASA source)

Geography

Greenland, Alaska, Antarctica.