ABoVE Airborne Hyperspectral Imagery for Alaska, Canada, and Iceland

ABoVE AVIRIS-NG Level 1 radiance and Level 2 surface reflectance data comprises approximately 1700 individual flight lines covering around 120,000 square kilometers. The dataset was collected by the NASA ABoVE campaign using the AVIRIS-NG sensor on airborne platforms between 2017 and 2022. It supersedes previous releases and includes new surveys from Iceland and the core ABoVE domain.

Use Cases

• Classify land cover types like tundra-taiga ecotones using 425 spectral bands at 5-nm intervals from 380 to 2510 nm.
• Map vegetation health and biochemical properties across key study areas like the CHARS Greiner watershed using surface reflectance values.
• Analyze spatial gradients in surface reflectance across transects with a nominal 5-meter spatial resolution.
• Calibrate satellite-derived products by comparing with airborne radiance and geometrically calibrated reflectance measurements.
• Monitor changes in specific regions like the Mackenzie Delta or Utqiagvik/Point Barrow area across multiple survey years (2017-2022).

Strengths

• Covers approximately 120,000 square kilometers across a major ecological domain.
• Provides data in 425 contiguous spectral bands at a high 5-nanometer spectral resolution.
• Includes radiometrically and geometrically calibrated Level 1 radiance and Level 2 reflectance products.
• Supersedes and expands previous versions with new 2021-2022 surveys from Iceland and the ABoVE domain.

Limitations

• Spatial coverage is discontinuous, focused on specific flight lines and study areas rather than complete regional mapping.
• Data availability is tied to specific airborne campaigns and may have gaps due to operational constraints like COVID-era policies in 2021.

Provenance

Source

ORNL_CLOUD for NASA's ABoVE (Arctic-Boreal Vulnerability Experiment) campaign.

Collection Method

Airborne data collection using the AVIRIS-NG imaging spectrometer on eleven different aircraft teams.

Time Range

2017 to 2022

Freshness

Last updated with data through 2022.

Geography

Alaska, northwestern Canada, and Iceland.