VJ109GA: Daily Land Surface Reflectance from NOAA-20 VIIRS

NOAA-20's VIIRS sensor provides daily land surface reflectance data at two resolutions: three imagery bands at ~463 meters and nine moderate bands at ~926 meters. These atmospherically corrected bands, including ozone and aerosol effects, serve as foundational input for numerous downstream VIIRS land products. Version 2 incorporates improved calibration, geolocation accuracy, and corrections for aerosol flags over bright surfaces.

Use Cases

• Vegetation monitoring based on corrected reflectance bands in visible and infrared wavelengths.
• Desertification tracking using aerosol flag corrections over bright mid- to high-latitude surfaces.
• Land surface model input based on atmospherically corrected reflectance layers.
• Solar and sensor geometry analysis using included azimuth and zenith angle layers.
• Quality assessment of downstream products using the reflectance band quality layer.

Strengths

• Provides data at two specific spatial resolutions: ~463 meters for three bands and ~926 meters for nine bands.
• Includes twelve reflectance bands plus ancillary layers for sensor/solar geometry and quality.
• Version 2 lists specific improvements: enhanced calibration, geolocation accuracy, and aerosol flag corrections.

Limitations

• Column names and dataset size (rows, file size) are not provided in any source.
• License is ambiguously listed as 'other-license-specified' without further detail.
• Known issues require external consultation via a MODIS/VIIRS Land Quality Assessment website.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Derived from NOAA-20 VIIRS sensor data, processed with atmospheric correction using NCEP reanalysis inputs.

Freshness

2026-03-12 20:17:49.039511

Geography

Global