NASA SHIFT Project

Per-pixel vegetation canopy water content and 20 plant functional trait maps derived from NASA's AVIRIS-NG airborne spectrometer. The data cover a 1,656-square-kilometer study area in Santa Barbara County, California, with near-weekly observations from February to May 2022. These calibrated and atmospherically corrected mosaics are provided in cloud-optimized GeoTIFF format at approximately 5-meter spatial resolution.

Use Cases

• Tracking seasonal changes in vegetation health based on near-weekly temporal resolution from February to May 2022.
• Modeling drought stress and wildfire risk based on spatial and temporal patterns of canopy water content.
• Analyzing phenological trajectories of plant functional traits like nitrogen and chlorophyll concentrations across diverse ecosystems.
• Mapping coastal and terrestrial ecosystem boundaries using the included ocean pixel mask and multi-band surface reflectance data.

Strengths

• High spatial resolution of approximately 5 meters per pixel.
• Spectral data captured across 425 bands at 5-nanometer intervals from 380 to 2510 nm.
• Covers a 1,656-square-kilometer study area with near-weekly temporal frequency.
• Data are radiometrically calibrated, geometrically calibrated, and atmospherically corrected.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

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

Collection Method

Derived from surface reflectance measurements via spectral fitting and partial least squares regression models.

Time Range

2022-02-24 to 2022-05 17

Freshness

Data collection occurred from 2022-02-24 to 2022-05-17. Last platform update date is unknown.

Geography

A 640-square-mile study area stretching from Los Padres National Forest to the Central California coast, including Dangermond Preserve and UCSB's Sedgwick Reserve.