AVIRIS-NG Hyperspectral Radiance for Mississippi River Delta 2021

Spring and fall 2021 deployments captured Level 1B orthorectified radiance from NASA's AVIRIS-NG instrument over the Atchafalaya and Terrebonne basins in Louisiana. The dataset consists of 200 total flight lines providing calibrated spectral radiance across 380 to 2510 nm wavelengths at approximately 5-meter spatial resolution. Data is provided by NASA/ORNL in ENVI format as part of the Delta-X mission.

Use Cases

• Modeling coastal vegetation cover using calibrated radiance across visible and infrared spectral bands.
• Analyzing sediment composition and water quality in deltaic basins via shortwave infrared reflectance.
• Studying land surface and coastal geomorphology with orthorectified imagery and included geographic pixel location/elevation data.
• Calibrating satellite-derived products using the high-fidelity, aircraft-based radiance measurements.
• Investigating observational geometry and illumination effects on reflectance using included band parameter files.

Strengths

• Provides high spectral resolution data with measurements at 5-nanometer intervals across 380-2510 nm.
• Offers detailed spatial coverage with 200 flight lines over two seasonal deployments in 2021.
• Data is radiometrically and geometrically calibrated, providing orthorectified radiance values.

Limitations

• Spatial resolution is approximate (5-meter) and dependent on aircraft altitude, not fixed.
• Conflicting metadata exists for last updated date (2026-03-13 vs. 2021-09-25).
• Specific column names, row counts, and dataset size are not provided by any source.

Provenance

Source

NASA Airborne Visible Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) instrument.

Collection Method

Airborne data collected via Dynamic Aviation King Air B200 aircraft during the Delta-X mission.

Time Range

2021 (spring and fall deployments)

Freshness

2026-03 13 03:11:05.380183

Geography

Atchafalaya and Terrebonne basins of the Mississippi River Delta, Louisiana, USA.