IceBridge Photogrammetric Digital Elevation Models from Stereo Imagery

A 2017 collection of digital elevation models (DEMs) created by the NSIDC_CPRD using the NASA Ames Stereo Pipeline. The DEMs were generated by processing stereo images from the IceBridge DMS L0 Raw Imagery dataset, fused with lidar data from the LVIS and ATM instruments.

Use Cases

• Analyze ice sheet surface elevation changes by comparing DEM elevation values over time.
• Validate airborne lidar elevation data from the LVIS and ATM sensors using photogrammetric DEMs.
• Study glacial geomorphology by extracting topographic features like crevasses and melt ponds from the DEM surface models.
• Fuse stereo-image-derived DEM data with the corresponding orthorectified images for enhanced visual interpretation.

Strengths

• DEMs created using a sophisticated multi-sensor fusion method combining stereo imagery with lidar data.
• Data is part of NASA's Operation IceBridge, a long-term aerial survey of polar ice.

Limitations

• Dataset was last updated in July 2017, limiting analysis of recent ice dynamics.
• Specific spatial coverage, resolution, and validation accuracy metrics are not provided in the description.

Provenance

Source

NASA IceBridge mission data processed by the NSIDC_CPRD.

Collection Method

Generated using the NASA Ames Stereo Pipeline applied to DMS L0 stereo imagery, with fusion of LVIS and ATM lidar data.

Time Range

null

Freshness

Last updated 2017-07-25.

Geography

Polar regions surveyed by NASA's Operation IceBridge (likely Greenland and/or Antarctica).