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Full catalog/SHIFT_AVNG_L2A_RFL_V2_2431
SHIFT_AVNG_L2A_RFL_V2_2431·v2·dataset

True surface color from an aircraft sensor (AVIRIS-NG)

SHIFT: AVIRIS-NG L2A Orthorectified Surface Reflectance, V2
land NASA ORNL_CLOUD Level 2 multiple
In plain English

What it measures. The true color and reflectance of the land surface in fine spectral detail, from visible light through shortwave infrared, captured across a study area in coastal California.

How it's made. Collected by the airborne AVIRIS-NG imaging spectrometer flown roughly weekly in 2022, then corrected for terrain and lighting and placed accurately onto a map at about 5-meter detail.

How & where you'd use it. Supports detailed study of plant communities and surface materials, and helps researchers learn how often such imagery needs to be repeated to be scientifically valuable.

What's measured

LAND SURFACE › SURFACE RADIATIVE PROPERTIES › REFLECTANCESPECTRAL/ENGINEERING › INFRARED WAVELENGTHS › REFLECTED INFRARED

Coverage & cadence

  • Time span2022-02-24 → 2022-09-15
  • Measured byB-200 (AVIRIS-NG)
  • Processing levelLevel 2
  • Spatial extent-120.643, 33.9039, -118.036, 35.1161
  • Formatsmultiple
  • StatusCOMPLETE

What you can do with it

  • Track deforestation, fire scars and land-cover change
  • Monitor crop and vegetation health (NDVI/EVI)
  • Map how built-up vs. green an area is over time
Official description

This dataset contains Level 2A (L2A) orthorectified surface reflectance images from NASA's Airborne Visible / Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) instrument. This imagery was collected approximately weekly in 2022 between February and May, as well as in September as part of the Surface Biology and Geology High Frequency Time Series (SHIFT) campaign. The SHIFT campaign leveraged NASA's AVIRIS-NG facility instrument to collect VSWIR data at approximately a weekly cadence across a broad study area, enabling traceability analyses related to the science value of VSWIR revisits. This campaign will generate precise, high-frequency data on plant communities collected over nearly 1,656 square kilometers across Santa Barbara County, California, US, and nearby coastal Pacific waters. AVIRIS-NG is a pushbroom spectral mapping system with high signal-to-noise ratio (SNR), designed and toleranced for high performance spectroscopy. AVIRIS-NG measures reflected radiance at 5-nm intervals in the Visible to Shortwave Infrared (VSWIR) spectral range from ~380-2500 nm. The AVIRIS-NG sensor has a 1 milliradian instantaneous field of view, providing altitude dependent ground sampling distances from 20 m to sub-meter range. For this collection, most data is around 5 m, with some flight lines at finer spatial resolution. For each AVIRIS-NG flight line, two file types are included: orthocorrected surface reflectance (RFL_ORT) and orthocorrected reflectance uncertainty (UNC_ORT) in netCDF format. Both file types include data projected in a UTM coordinate system. In addition, ancillary files for each flight line are provided, including a quick look image in GeoTIFF format and text files in YAML format that document processing algorithms and parameters used during production.

Get the data

shift_avng_l2a_rfl_v2_2431_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="SHIFT_AVNG_L2A_RFL_V2_2431",
    version="2",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from ORNL_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.