AVIRIS-3 Airborne Hyperspectral Surface Reflectance Images

NASA's AVIRIS-3 instrument provides Level 2A orthocorrected surface reflectance data across 390-2500 nm wavelengths at 7.4-nm intervals. This facility instrument collection includes reflectance and uncertainty files in netCDF format, plus ancillary GeoTIFF and YAML files for each flight line. The dataset is managed by NASA's EOSDIS and archived by ORNL_CLOUD.

Use Cases

• Analyzing vegetation indices and plant health using spectral reflectance across hundreds of narrow bands.
• Mapping surface mineralogy and geological features through shortwave infrared reflectance signatures.
• Calibrating and validating satellite-derived surface reflectance products with higher-resolution airborne data.
• Assessing surface radiative properties for climate and energy balance studies.

Strengths

• Data provides high spectral resolution with measurements at 7.4-nm intervals across the 390-2500 nm range.
• Includes quantified uncertainty estimates (UNC_ORT files) for each reflectance measurement.
• Files are orthocorrected and projected in a UTM coordinate system for direct geospatial analysis.
• Ancillary YAML files document the specific processing algorithms and parameters used.

Limitations

• Core dataset metrics like row count, total size, and specific license terms are unavailable or conflict across sources (e.g., 'other-license-specified' vs. 'None').
• The temporal and geographic coverage for the flight lines is not specified in the provided metadata.

Provenance

Source

NASA Earth Observing System Data and Information System (EOSDIS), AVIRIS-3 instrument.

Collection Method

Airborne spectral mapping, with surface reflectance derived from calibrated radiance using an optimal estimation algorithm.

Time Range

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Freshness

2026-03-13 15:15:02.885999

Geography

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